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Full-Text Articles in Engineering
Analysis And Comparison Of Nir Pigments For "Cool" Coating Applications, Karey Steinmetz
Analysis And Comparison Of Nir Pigments For "Cool" Coating Applications, Karey Steinmetz
Williams Honors College, Honors Research Projects
The goal of this research is to compare our own formulation of near infrared radiation (NIR) pigment coating to commercialized ones. These near infrared coatings are designed to be used on roofs of buildings to keep the buildings from absorbing the heat from the sun’s radiation. This would keep the building cooler and use less energy and money to cool the building. In this study, Styrofoam was used to build a lab-scale house and were put under heat lamps that mimicked the sun. Temperatures were taken at three different locations to determine the effectiveness of the pigmented coatings. Color and …
Pulse Reverse Current Electrodeposited Tio2 Doped Ni-W Coating, Sydney Hughes
Pulse Reverse Current Electrodeposited Tio2 Doped Ni-W Coating, Sydney Hughes
Williams Honors College, Honors Research Projects
Nickel-Tungsten (Ni-W) coatings via the pulse reverse current method have been under development as a potential replacement for typical Chromium/Cadmium coatings. To increase the effectiveness of Ni-W as a coating, dopants have been tested to decrease microcracks and pores and increase overall tribological performance. Previous research by Timken Engineered Surfaces Laboratory showed that Ni-W doped with TiO2 nanoparticles had a positive effect on coating performance. The purpose of this study was to determine the ideal solution parameters (i.e. TiO2 concentration, pH) to maximize the benefit of the dopant when samples are subjected to tribological testing. Here, solutions of …
Increasing The Corrosion Protection Of Aisi 1008 Carbon Steel By Surface Treatment With Unmodified And Benzotriazole Modified Sol-Gel Films, Shane Thomas Kelliher
Increasing The Corrosion Protection Of Aisi 1008 Carbon Steel By Surface Treatment With Unmodified And Benzotriazole Modified Sol-Gel Films, Shane Thomas Kelliher
Williams Honors College, Honors Research Projects
The corrosion performance of sol-gel coated AISI 1008 carbon steel was investigated in 3.5 wt% NaCl solutions of pH 7, 9, and 12 using electrochemical measurements. A corrosion inhibitor, benzotriazole (BTA) was added to the sol-gel mixture and tested as a second, modified sol-gel coating. Sol-gel films adhered evenly to metal samples and were characterized by FTIR spectroscopy. Electrochemical Impedance Spectroscopy (EIS) showed an increase in polarization resistance from blank to sol-gel coated samples (600-18,800,000 ohms). Cyclic polarization (CPP) curves showed positive hysteresis loops for blank and unmodified sol-gel coated samples which increased at high pH following the backward potential …