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Processing and Characterization of Cr-Cu Alloys through Liquid Phase Sintering for Vacuum Circuit Breakers
(Virginia Tech Department of Materials Science and Engineering, 2006-09-22)
Powder metallurgical processing of Cr-Cu has advantages over other processes.Vacuum Cirbuit Breakers are well known as vacuum interrupters (VI).The essential properties required for materials used in VI are high electrical ...
Characterization of the Effect of Film Thickness on the Electrochemical Impedance of Nanoporous Gold
(Virginia Tech Department of Materials Science and Engineering, 2005-09-22)
Graphs are generated characterizing the effect of film thickness on the electro chemical impedance of nanoporous gold. Twelve-karat white gold (50% Ag, 50% Au) leaves were dealloyed to make a total of 12 nanoporous gold ...
A Guide to the Calculation of Theoretical Densities of Crystal Structures for Solid Oxide Fuel Cells
(Virginia Tech Department of Materials Science and Engineering, 2006-09-22)
Theoretical density is an important parameter used to estimate the porosity of materials after sintering, especially if the requirements for the materials’ densities are strict, such as in the case of the parts of solid ...
Computer Simulation of a Hardness Indent Test into Nickel Nano Thin Films
(Virginia Tech Department of Materials Science and Engineering, 2006-09-22)
Current experiments suggest that mechanical properties of thin films are different at thicknesses less than 100 nm.In this study, embedded atom method computer simulations are used to examine the differences in strengthening ...
Effect of Carbon Addition and Sintering Temperatures on Densification and Microstructural Evolution of Sinter-Hardening Alloy Steels
(Virginia Tech Department of Materials Science and Engineering, 2006-09-22)
The iron-copper-carbon alloys are used extensively in powder metallurgy due to their superior dimensional control; however, they possess lower mechanical properties, corrosion resistance and wear resistance than their ...
Tunable Three-Dimensional Magnetic Coordination Polymers
(Virginia Tech Department of Materials Science and Engineering, 2006-09-22)
Four chlorinated phenyltricyanoethylenes were synthesized and reacted with vanadium hexacarbonyl to form ferrimagnetic coordination polymers.Species chlorinated at the 2, 3, or 4 position of the ring as well as a dichlorinated ...
Ruthenium Coordination Chemistry: Implications for Directed Carbon Nanotube Assembly
(Virginia Tech Department of Materials Science and Engineering, 2008-03-20)
Ruthenium coordination chemistry is studied for its usage as a building block for constructing supramolecular coordination complexes.Our laboratory focuses on how nanometer sized ruthenium structures interact with single ...
The Effect of Cornstarch Levels on the Surface Quality of Extruded Soy Protein Plastic
(Virginia Tech Department of Materials Science and Engineering, 2008-03-20)
The ratio of soy protein isolate to cornstarch was studied in the extrusion of four different formulations of soy protein plastic in order to qualitatively examine the surface quality upon extrusion.Levels of glycerol and ...
Mechanical Properties Testing of Running Shoes
(Virginia Tech Department of Materials Science and Engineering, 2010-03-20)
Mechanical properties testing of running shoes was performed. Stress relaxation tests and energy absorbing tests were performed on excised samples and on unmodified shoes. The stress relaxation moduli for running shoe ...
Optical Properties of an Electrochromic Device Based on Poly (aniline 2-sulfonic) acid (PASA) Film, Formed by Ionically Self-Assembled Multilayers (ISAM) Technique
(Virginia Tech Department of Materials Science and Engineering, 2008-03-20)
A new ElectroChromic Device (ECD) was designed and constructed based on Ionically Self Assembled Multilayers (ISAM) technique, in which oppositely charged polymers are used to construct films of multiple layers.The ECD ...