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Graduate Theses, Dissertations, and Problem Reports (ETD)

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Shame And Guilt: The Good, The Bad, And The Ugly, Raika Sadeghein Jan 2019

Shame And Guilt: The Good, The Bad, And The Ugly, Raika Sadeghein

Graduate Theses, Dissertations, and Problem Reports (ETD)

In the past few decades, we have witnessed a growing body of literature on emotions in the consumer behavior domain. Emotions are defined as “mental states of readiness that arise from appraisals of events or one’s own thoughts” (Bagozzi, Gopinath, & Nyer, 1999, p. 184). Marketers have examined the role of emotions as stimuli, mediators, moderators, and responses to the environment. The broad topic of emotions includes subtopics such as impact of emotions on consumption, attitudes, and behavioral intentions, emotional responses to market stimuli, and the impact of emotions on cognition. However, although the study of emotions is pivotal to …


Elucidating A Common Mechanism Of Proteasome Impairment In Neurodegenerative Disease And Its Pharmacological Intervention, Tiffany Ann Thibaudeau Jan 2019

Elucidating A Common Mechanism Of Proteasome Impairment In Neurodegenerative Disease And Its Pharmacological Intervention, Tiffany Ann Thibaudeau

Graduate Theses, Dissertations, and Problem Reports (ETD)

Proteostasis is maintained by several systems in the cell including the ubiquitin-proteasome system (UPS), chaperones, chaperone-mediated autophagy, and macroautophagy. The UPS is the principle route for the degradation of intracellular misfolded, damaged, or unneeded cellular proteins and has a critical role essential every cell process, including: cell cycle progression, transcriptional regulation, genome integrity, apoptosis, immune responses, and neuronal plasticity. When the efficiency of protein degradation is perturbed, misfolded and damaged protein aggregates can accumulate to toxic levels and cause neuronal dysfunction, which may underlie many neurodegenerative diseases. It is widely appreciated that soluble oligomers of misfolded proteins (e.g. Aβ, Alzheimer’s; …


Accessible Design In Rural Health Care: Usability Profile Of Outpatient Health Care Facilities In Rural West Virginia., Jordan E. Miller Jan 2019

Accessible Design In Rural Health Care: Usability Profile Of Outpatient Health Care Facilities In Rural West Virginia., Jordan E. Miller

Graduate Theses, Dissertations, and Problem Reports (ETD)

The Americans with Disabilities Act (ADA) became law in 1990. Since then, research has shown that people with disabilities continue to experience environmental, systematic, and structural barriers to health care. The purpose of this research is to explore the prevalence of barriers in rural West Virginia health facilities and the relationship between building characteristics (like age and purpose) and accessibility. The researcher evaluated ten rural outpatient member-sites of the West Virginia Practice-Based Research Network using a survey to understand building characteristics and a tool to measure essential features for a facility to be considered ‘usable’. Findings included a negative correlation …


Nuanced Narratives: Reporting With Critical Race And Feminist Standpoint Theories, Emily Margaret Pelland Jan 2019

Nuanced Narratives: Reporting With Critical Race And Feminist Standpoint Theories, Emily Margaret Pelland

Graduate Theses, Dissertations, and Problem Reports (ETD)

The Google Expedition titled WWI Era Through the Eyes of the Chicago Defender explores African American experiences during the early years of the Great Migration (1910-1970). Conventional journalism relies on the false idea that journalists are meant to be, and can be, objective, outside observers. This report provides tools for journalists to create more nuanced, thorough storytelling endeavors. This report describes the theoretical framework and intent of the Virtual Reality (VR) project for students in grades 8 and above. It utilizes Feminist Standpoint Theory (FST) and Critical Race Theory (CRT) to cultivate a VR experience that acknowledges particular, overlooked aspects …


Amazon Nights Ii: Electric Boogaloo-Neural Adaptations For Communication In Three Species Of Weakly Electric Fish, Kathryne M. Allen Jan 2019

Amazon Nights Ii: Electric Boogaloo-Neural Adaptations For Communication In Three Species Of Weakly Electric Fish, Kathryne M. Allen

Graduate Theses, Dissertations, and Problem Reports (ETD)

Sensory systems have to extract useful information from environments awash in noise and confounding input. Studying how salient signals are encoded and filtered from these natural backgrounds is a key problem in neuroscience. Communication is a particularly tractable tool for studying this problem, as it is a ubiquitous task that all organisms must accomplish, easily compared across species, and is of significant ethological relevance. In this chapter I describe the current knowledge of what is both known and still unknown about how sensory systems are adapted for the challenges of encoding conspecific signals, particularly in environments complicated by conspecific-generated noise. …


Experimental And Modeling Investigation Of The Oh-Initiated Oxidation Of Semi-Solid And Aqueous Saccharide Aerosols, Hanyu Fan Jan 2019

Experimental And Modeling Investigation Of The Oh-Initiated Oxidation Of Semi-Solid And Aqueous Saccharide Aerosols, Hanyu Fan

Graduate Theses, Dissertations, and Problem Reports (ETD)

My research focuses on investigating the impact of moisture-induced and oligomer-induced viscosity changes on OH-initiated oxidation of semi-solid aerosols,and the role of gas-liquid interfaces in regulating aqueous aerosol chemistry. Saccharides, which are a major constituent of aqueous atmospheric aerosols, are chosen as model molecules to form highly oxygenated organic aerosols. The experiments are performed using an atmospheric pressure flow-tube reactor with both online VUV-AMS (Vacuum-Ultraviolet Aerosol Mass Spectrometer) and offline GC-MS analysis techniques. The decay rates of saccharide are determined by measuring the loss signal of saccharide in the particle phase as a function of OH exposure (time-integrated total concentration …


Framing Effects On Fear Of Terrorism And Willingness To Sacrifice Civil Liberties, Ellory Ruth Dabbs Jan 2019

Framing Effects On Fear Of Terrorism And Willingness To Sacrifice Civil Liberties, Ellory Ruth Dabbs

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this research was to determine whether differences in the way the media frames an act of violence leads to different reactions by consumers. In particular, it was hypothesized that the ideology and race of the perpetrator would lead to differences in perceptions of whether or not the attack was terrorism. A vignette-style experiment was performed using respondents recruited via MTurk. Four versions of the vignette were evenly distributed to 441 respondents, changing whether the frame contained a photo, the ideology, and the name of the perpetrator. Using measures of fear from this data it was then investigated …


Bridging The Gap: Utilizing Socratic Inquiry Facilitation In Cross-Cultural Communication And Conflict Exploration, Mikaela G. Zimmerman Jan 2019

Bridging The Gap: Utilizing Socratic Inquiry Facilitation In Cross-Cultural Communication And Conflict Exploration, Mikaela G. Zimmerman

Graduate Theses, Dissertations, and Problem Reports (ETD)

The objective of this research is to explore the possibilities for improving governmental relations (local, national, and international) using microcosms of cross-cultural dialogues facilitated with Socratic Inquiry methodology and their potential to project situational similarities into more formal political conversation. Using twenty-five recorded dialogues from The Pennsylvania State University’s Center for Public Diplomacy (World in Conversation), I have broadly observed the role of Socratic Inquiry facilitation in cross-cultural dialogues whose content varies across a span of contentious social topics. By generally accounting for a range of relevant social factors such as gender, body language, conversational tools, and proxies for empathy, …


Using Social Media To Combat Opioid Epidemic, Yiming Zhang Jan 2019

Using Social Media To Combat Opioid Epidemic, Yiming Zhang

Graduate Theses, Dissertations, and Problem Reports (ETD)

Opioid addiction has become one of the largest and deadliest epidemics in the United States. To combat such deadly epidemic, there is an urgent need for novel tools and methodologies to gain new insights into the behavioral processes of opioid abuse and addiction. The role of social media in biomedical knowledge mining has turned into increasingly significant in recent years. The data from social media may contribute information beyond the knowledge of domain professionals (e.g., psychiatrists and epidemics researchers) and could potentially assist in sharpening our understanding toward the behavioral process of opioid addiction and treatment.

In this thesis, we …


The Dirt Of Development: Nature's Role In Social-Emotional Development And Parent-Child Connectedness, Hayley Johanna Lindsey Jan 2019

The Dirt Of Development: Nature's Role In Social-Emotional Development And Parent-Child Connectedness, Hayley Johanna Lindsey

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study was to examine associations between nature connectedness, parent-child connectedness, and the development of prosocial behavior. Nature connectedness pertains to the strong emotional affinity towards the natural environment and is linked with happiness, stress reduction, and good health. Prosocial behavior refers to actions or behaviors done with the intent to help others. This study consisted of 467 parent-informants that gathered information on the parent’s nature connectedness, the child’s nature connectedness, the parent-child connectedness, and the child prosocial behavior. Gaps in the literature were addressed by analyzing the role that parent nature connectedness has in predicting child …


Artifacts Of Imagination, Rachel Emily Simpson Jan 2019

Artifacts Of Imagination, Rachel Emily Simpson

Graduate Theses, Dissertations, and Problem Reports (ETD)

My MFA thesis and supporting exhibition focus on works ranging from video and sculpture to installation. The work has evolved from an intimate spiritual dialogue and interaction with the terrestrial world. This personal narrative is a jumping off point to pursue more universal themes and ideas of layering of information, shared versus collective perceptions and creating systems of understanding. Many of the processes involved in this exhibition contain some form of collage. The use of these various collage techniques furthers the idea of complexity in perception and expression and the many layers of experience. I will explain how the creation …


Coaches' Preparedness For Sudden Death Conditions In Secondary School Athletics In West Virginia, Jillian Mary Sarm Jan 2019

Coaches' Preparedness For Sudden Death Conditions In Secondary School Athletics In West Virginia, Jillian Mary Sarm

Graduate Theses, Dissertations, and Problem Reports (ETD)

Context: Coaches in the secondary school setting may encounter and be expected to provide emergency medical care for student athletes in the absence of a healthcare professional such as athletic trainers. The National Athletic Trainers’ Association (NATA) categorized ten sudden death conditions which are common in athletics and may warrant a medical emergency. Since the coaches may not be cognizant of these common sudden death conditions, they may not be prepared to handle a medical emergency which threatens the life of student athletes. Objective: Determine if West Virginia Secondary School Activities Commission (WVSSAC) coaches are aware and prepared to provide …


Listening For The Cosmic Other: Postcolonial Approaches To Music In The Space Age, Paige Zalman Jan 2019

Listening For The Cosmic Other: Postcolonial Approaches To Music In The Space Age, Paige Zalman

Graduate Theses, Dissertations, and Problem Reports (ETD)

As government programs such as NASA and SETI seek signs of intelligent life in space and privately-funded programs such as SpaceX finalize plans to colonize Mars in the coming decades, representations of space and extraterrestrial life in American culture have become increasingly relevant. Focusing on Jóhann Jóhannsson’s musical score for Denis Villeneuve’s science-fiction film Arrival (2016), Terry Riley’s Sun Rings (2002) for string quartet, chorus, and recorded space sounds, and former International Space Station Commander Chris Hadfield’s “Songs about Space” Spotify playlist, my research problematizes the ways in which composers, musicians, and even astronauts depict alterity through music and reinforce …


Mindfulness For Musicians: Bringing Sport Psychology And Mindfulness-Based Therapies To The Practice Room And The Concert Stage, Lauretta M. Werner Jan 2019

Mindfulness For Musicians: Bringing Sport Psychology And Mindfulness-Based Therapies To The Practice Room And The Concert Stage, Lauretta M. Werner

Graduate Theses, Dissertations, and Problem Reports (ETD)

Due to the profession’s competitive nature, time-consuming demands, and frequent evaluations, many musicians experience debilitating music performance anxiety, hypercritical thoughts, and/or avoidance of specific performance situations. To cope with these experiences, musicians can cultivate mindfulness. Mindfulness is purposefully and non-judgmentally paying attention to the present moment, developing awareness of emotions, thoughts, and physical sensations, and acknowledging the reality of one’s experience. “Mindfulness for Musicians: Bringing sport psychology and mindfulness-based therapies to the practice room and the concert stage” discusses how cultivating mindfulness helps musicians cope with intense emotions, such as panic or fear, and explores how cultivating mindfulness helps musicians …


Roses & Thorns, Stephanie Alaniz Jan 2019

Roses & Thorns, Stephanie Alaniz

Graduate Theses, Dissertations, and Problem Reports (ETD)

This written thesis has been created alongside the thesis exhibition shown in the Laura Mesaros Gallery at West Virginia University (displayed March 18th to March 22nd). The work presented consisted of drawings, bookmaking, and various forms of printmaking and collage. This body of work is meant to create an analysis of insecurities and body positivity we associate with our physical selves. This work is a collective experience that has been a collaboration with over 80 participants. The number of participants help to create a larger overall collective voice. By creating this collective voice, we can experience these feelings together and …


The Life And Work Of Alex Klein, Ramon Thiago Mendes De Oliveira Jan 2019

The Life And Work Of Alex Klein, Ramon Thiago Mendes De Oliveira

Graduate Theses, Dissertations, and Problem Reports (ETD)

Alex Klein is one of the best-known figures of the American oboe school. He is the winner of multiple international competitions, including the first prize at the Geneva’s Concours International d’Execution Musicale. Appointed principal oboe at the Chicago Symphony Orchestra in 1995, Klein is one of the most highly regarded musicians hired during the Barenboim era. His recording of Richard Strauss’ oboe concerto with the CSO was awarded Best Instrumental Soloist Performance (with Orchestra) at the 44th Grammy Awards. In 2004, his tenure at CSO was interrupted due to the onset of Focal Dystonia; which affected multiple fingers in …


A Pedagogical Guide To Kapustin’S Eight Concert Etudes, Op. 40, Yanjing Gu Jan 2019

A Pedagogical Guide To Kapustin’S Eight Concert Etudes, Op. 40, Yanjing Gu

Graduate Theses, Dissertations, and Problem Reports (ETD)

The etude is an important genre in piano literature and most piano teachers select etudes as teaching material for students to improve their technique and musical sensitivity. As etudes developed and evolved, they have served not only for technical study, but also as concert repertoire that beautifully represents composers’ personal styles. Since the initial appearance of the etude as a genre in the early 19th century, composers from subsequent time periods have continued to write etudes.

While a number of scholarly works discuss etudes, relatively little attention has been devoted to etudes composed in the late 20th century, compared …


2.8: Designing Visitor Experience For A Narrative-Oriented Exhibition, Kseniia Leshchenko Jan 2019

2.8: Designing Visitor Experience For A Narrative-Oriented Exhibition, Kseniia Leshchenko

Graduate Theses, Dissertations, and Problem Reports (ETD)

This thesis proposes interactive visitor experience with social media and fake news references at 2.8 thesis exhibition at West Virginia University. 2.8 refers to the distance between the United States and Russia borders in the Bering Strait and suggests that switching a point of view helps conflicting groups find common ground. By designing a space in such a way that a visitor constantly faces an alternative point of view, which in this case represents my own, I investigate whether this experience contributes to the viewers’ outlook change. Another aim is to see whether adding interactive elements to a show improves …


Breaking And Remaking The Mason-Dixon Line: Loyalty In Civil War America, 1850-1900, Charles R. Welsko Jan 2019

Breaking And Remaking The Mason-Dixon Line: Loyalty In Civil War America, 1850-1900, Charles R. Welsko

Graduate Theses, Dissertations, and Problem Reports (ETD)

Between 1850 and 1900, Americans redefined their interpretation of national identity and loyalty. In the Mid-Atlantic borderland of Maryland, Pennsylvania, Virginia, and West Virginia this change is most evident. With the presence of a free state and slave states in close proximity, white and black Americans of the region experienced the tumult of the Civil War Era first hand. While the boundary between freedom and slavery served as an antebellum battleground over slavery, during the war, the whole region bore witness to divisions between the Union and Confederacy as well as to define what loyalty and nation meant. By exploring …


Los Ritmos Latinoamericanos Como Estrategia De Resistencia En La Ópera La Ruta De Su Evasión (2017) De Abya Yala Y Carlos Castro, Pamela Zamora Quesada Jan 2019

Los Ritmos Latinoamericanos Como Estrategia De Resistencia En La Ópera La Ruta De Su Evasión (2017) De Abya Yala Y Carlos Castro, Pamela Zamora Quesada

Graduate Theses, Dissertations, and Problem Reports (ETD)

In this Master’s thesis I examine the most recent Costa Rican opera The Path of Avoidance (2017), produced by the Cultural Association for Performing Arts Abya Yala, directed by Roxana Ávila and composed by Carlos Castro, based on the homonymous novel of Yolanda Oreamuno (1948).Through a semiotic analysis, I will discuss how the innovative manner of incorporating Latin American rhythms such as salsa, bolero, vals criollo, bossa nova and tango is a musical strategy which promotes a problematization of the gender dominant discourse and patriarchal context. Simultaneously, these rhythms offer a way of resistance on the direct or psychological violence …


Legitimacy, Procedural Justice, And Neighborhood Dynamics: Thoughts On Police Reform, Robert Lyle Nicewarner Jan 2019

Legitimacy, Procedural Justice, And Neighborhood Dynamics: Thoughts On Police Reform, Robert Lyle Nicewarner

Graduate Theses, Dissertations, and Problem Reports (ETD)

Currently, there is much debate about how to alleviate tensions between communities and police. These tensions do not illustrate the full scope of the problem, but show us symptoms of a larger, more structural issue. Many scholars point to procedural justice tactics as a way to increase the legitimacy of the police; thus, creating a safer environment where citizens do not fear the police but respect, obey, and defer to them. However, not every neighborhood is the same and not every neighborhood needs the same kind of policing style. Drawing on theories of collective efficacy and social cognition I propose …


Wish4campus: Evaluating College Food Insecurity And Promoting Solutions For Student Wellbeing, Rebecca L. Hagedorn Jan 2019

Wish4campus: Evaluating College Food Insecurity And Promoting Solutions For Student Wellbeing, Rebecca L. Hagedorn

Graduate Theses, Dissertations, and Problem Reports (ETD)

Introduction: Interest in college food insecurity has increased in previous years, however, little research focuses on the Appalachian and Southeastern regions of the United States resulting in limited understanding of food insecurity’s impact on college students in these regions. Additionally, resources to help food insecure students are often sparse with universities lacking evidence-based programming to implement for student benefit.

Aims: This dissertation aims to (1) investigate the correlates and behavioral consequences of food insecurity on college students at an Appalachian university, (2) expand college food insecurity research to a regional investigation in the Appalachian and Southeastern regions, and (3) develop …


Apple Pomace As A Novel Aid For Western Diet-Induced Nonalcoholic Fatty Liver Disease In Young Female Sprague Dawley Rats, R. Chris Skinner Jan 2019

Apple Pomace As A Novel Aid For Western Diet-Induced Nonalcoholic Fatty Liver Disease In Young Female Sprague Dawley Rats, R. Chris Skinner

Graduate Theses, Dissertations, and Problem Reports (ETD)

Apple pomace is a “waste” byproduct of apple processing that causes environmental pollution and is costly to dispose of. Yet, apple pomace is rich in dietary fibers and antioxidants. Analysis of apple pomace’s nutritional profile indicates suitability as a potential dietary treatment for non-alcoholic fatty liver disease (NAFLD) and the more severe non-alcoholic steatohepatitis (NASH). NAFLD is the most prevalent liver disease in the world with prevalence and severity expected to increase in both adults and children. Currently, there is no approved drug treatment for NAFLD and therefore, dietary intervention is the primary treatment. The study objectives were to determine …


West Virginia University’S Changing Mission In The 21st Century, Katlin Swisher Jan 2019

West Virginia University’S Changing Mission In The 21st Century, Katlin Swisher

Graduate Theses, Dissertations, and Problem Reports (ETD)

In the midst of the ongoing shifts of the perception of higher education and the public’s question of the role and value of public universities, West Virginia University has simultaneously experienced institutional change through five different presidential administrations in a decade. As seen through WVU’s historical context as the state of West Virginia’s land-grant, flagship, research university, the institution has and continues to face many administrative, policy, and contextual changes as it strives to meet its strategic goals and operationalize its mission. Through document analysis and interviews with key officials, this qualitative, multi-case study seeks to understand how WVU’s mission …


Non-Target Analyses Of Novel Psychoactive Substances; Inherent Variation In Gcms Relative Abundances And Gas Phase Hydrogen Deuterium Exchange Isomer Discrimination, Kristin Michelle Kelly Jan 2019

Non-Target Analyses Of Novel Psychoactive Substances; Inherent Variation In Gcms Relative Abundances And Gas Phase Hydrogen Deuterium Exchange Isomer Discrimination, Kristin Michelle Kelly

Graduate Theses, Dissertations, and Problem Reports (ETD)

Novel psychoactive substances (NPSs) are synthetically derived compounds designed to mimic the effects of other illicit drugs. An endless cycle of NPSs continually reach the drug market due to limitations in drug legislation creating two problems: (1) non-availability of standards and (2) multiple isobars indistinguishable even to high resolution mass spectrometry. Gas chromatography-mass spectrometry (GCMS) is the most common instrument used for compound identification in non-targeted seized drug analysis. Compound identification using this technique relies on mass spectra where the percent relative abundances (%RAs) of all m/z values are compared manually or searched against a library database. Lacking standards, laboratories …


Aptamer Functionalized Zinc Oxide Field Effect Transistors For Odor Detection, Michael D. Aldridge Jan 2019

Aptamer Functionalized Zinc Oxide Field Effect Transistors For Odor Detection, Michael D. Aldridge

Graduate Theses, Dissertations, and Problem Reports (ETD)

Odor detection and identification are complex processes, and tasks that currently only animals do well. There is a pressing need for an electronic nose, or eNose, with good sensitivity, selectivity, and speed that mimics that ability. Food quality control operations, environmental sensing, occupational safety, and the defense sectors all require systems that can rapidly and reliably detect trace levels of volatile organic compounds. The goal of this work is to create a biologically inspired device which can accurately detect and identify odors at concentrations consistent with the most sensitive biological systems.

In order to mimic a natural olfactory system, we …


Experimental Measurement Of Dielectric Properties Of Powdery Materials Using A Coaxial Transmission Line, Robert Tempke Jan 2019

Experimental Measurement Of Dielectric Properties Of Powdery Materials Using A Coaxial Transmission Line, Robert Tempke

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study proposes a standard methodology for coaxial dielectric property measurements of powdery materials (1-10GHz) using a coaxial transmission line. Four powdery materials with dielectric constants ranging from 3.5 to 70 (SiO2, Al2O3, CeO2, and TiO2) were experimentally investigated at varying volume loading fractions in a paraffin mixture. A statistically significant number of paraffin heterogeneous-mixtures was synthesized for all dielectric powders. The dielectric properties of the constitutive materials were determined using appropriate mixture equations. The sensitivity of the equations dielectric prediction to volume loading is discussed with guidance on selecting the best mixing equation. It was determined that low volume …


Analysis Of User Preference With N95 And Powered Air-Purifying Respirators In A Healthcare Work Environment, Brittany Renee Carver Jan 2019

Analysis Of User Preference With N95 And Powered Air-Purifying Respirators In A Healthcare Work Environment, Brittany Renee Carver

Graduate Theses, Dissertations, and Problem Reports (ETD)

For those working in the healthcare field, personal protective equipment is vital. Healthcare workers are often first responders when it comes to dealing with patients who are infected or when a disease outbreak occurs. The Occupational Safety and Health Administration (OSHA) requires all healthcare operations to provide employee protection against blood borne pathogens. With the increase of life-threatening disease outbreaks, such as SARS in 2003 and Ebola in 2014, it is of the upmost importance to make sure respirators are best suited for users and acceptable for long term use. It has been shown through previous studies that due to …


Numerical Modeling Of Hydraulic Fracture Propagation And Comparison With Microseismic Data At A Field Site, Carter Lawrence Hulcher Jan 2019

Numerical Modeling Of Hydraulic Fracture Propagation And Comparison With Microseismic Data At A Field Site, Carter Lawrence Hulcher

Graduate Theses, Dissertations, and Problem Reports (ETD)

A hydraulic fracturing site in Morgantown, West Virginia, USA was selected to be a research site for the Marcellus Shale Energy and Environment Laboratory (MSEEL) project which was funded by the U.S. Department of Energy (DOE). The overall objective of the MSEEL research project is to evaluate and improve technologies to enhance shale gas recovery with minimal impacts on the environment. The field site has two previously drilled wells and two newly drilled wells for extracting natural gas. A separate exploratory well (or “science well”) was also drilled and includes a geophone array to extract important seismic/microseismic event information, which …


Development Of Ni-Based Oxide Dispersion Strengthened (Ods) Powder Particles For Metal Additive Manufacturing (Am) Applications, Markova Dion Mcpherson Jan 2019

Development Of Ni-Based Oxide Dispersion Strengthened (Ods) Powder Particles For Metal Additive Manufacturing (Am) Applications, Markova Dion Mcpherson

Graduate Theses, Dissertations, and Problem Reports (ETD)

The capabilities of Additive Manufacturing (AM) techniques has grown rapidly in recent years, however, current available metal powders for AM processes, such as Powder Bed Fusion and Directed Energy Deposition, are limited and primarily fabricated through atomization processes; the atomization process is capable of producing metal powders 15 µm to 150 µm in size, uniform size distribution, and spherical shape. Despite the advantages of atomization process, iron or nickel-based Oxide Dispersion Strengthened (ODS) powders, with nanocrystalline microstructure, cannot be produced with the atomization process because of the high temperature of yttrium (III) oxide (Y2O3, 2425 °C) …