Open Access. Powered by Scholars. Published by Universities.®
- Keyword
Articles 1 - 3 of 3
Full-Text Articles in Engineering
Thermodynamic Analysis Of Rare Earth Chlorination And Bromination Processes, Katie Lyons, Jerome Downey, Dan Gaede, Bryce Ruffier
Thermodynamic Analysis Of Rare Earth Chlorination And Bromination Processes, Katie Lyons, Jerome Downey, Dan Gaede, Bryce Ruffier
2015 Undergraduate Research
Research funded by the Army Research Laboratory (ARL), the Metallurgical and Materials Engineering Department at Montana Tech investigated various methods of extracting and refining rare earth elements (REEs) from mineral ores and concentrates. Extensive thermodynamic, thermogravimetric and differential thermal analyses were performed to evaluate the relative stabilities of various REE compounds in order to assess potential methods for selective separation and recovery of specific REEs. Conversion of rare earth oxides (REO) to rare earth chlorides or bromides is a possible initial step in pyrometallurgical and hydrometallurgical processing of REEs. REO can be converted to chlorides or bromides by roasting in …
Wetting And Reactivity Of Active Metal Braze Alloys On Tungsten Carbide, Hayden Peck, Alan Meier, Ph.D.
Wetting And Reactivity Of Active Metal Braze Alloys On Tungsten Carbide, Hayden Peck, Alan Meier, Ph.D.
2014 Undergraduate Research
Background
Tungsten carbide is useful because of its hardness and strength. Joining of dissimilar materials especially non-metallic materials is very challenging. Active metals such as titanium can be added to a ductile filler metals such as copper to get wetting via a reduction reaction.
Conclusions
All alloy conditions wet the tungsten carbide/cobalt substrates. Two different interfacial reaction types were observed: dissolution and reduction reactions. An important issue has been identified: the braze interface reactions change the chemistry of the braze alloy which change the interaction between the braze alloy and the other material substrate.
Wetting And Reactive Air Brazing Of Bscf For Oxygen Separation Devices, Richard Ladouceur, Alan Meier, Ph.D.
Wetting And Reactive Air Brazing Of Bscf For Oxygen Separation Devices, Richard Ladouceur, Alan Meier, Ph.D.
2013 Undergraduate Research
The goals of this project are to develop a Reactive Air Brazing (RAB) alloy and process for joining Barium strontium cobalt ferrite (BSCF), and to develop a fundamental understanding of the wettability and microstructral development due to reaction kinetics in BSCF/Ag-MexOy systems.