Binary alloys present a promising venue for band gap engineering and tuning of other mechanical and electronic properties of materials. Here we use the density-functional theory and cluster expansion to investigate the thermodynamic stability and electronic properties of 2D transition metal dichalcogenide (TMD) binary alloys. We find that mixing electron-accepting or electron-donating transitio...

Metal deposition at the tool flank wear-land during machining is a common phenomenon, especially in machining aluminum alloys and annealed teels. The cause of metal deposit has not been studied and the characteristics of the wear-land and deposit contact are not completely known. In his study, a turning test was conducted using tungsten carbide (WC) tools with pre-generated wear-land to machine...

PURPOSE This laboratory study assessed the effect of different dentin cleaning procedures on shear bond strength of resin cements for recementing prosthesis. MATERIALS AND METHODS 4 × 4 flat surface was prepared on the labial surface of 52 maxillary central incisors. Metal frames (4 × 4 × 1.5 mm) were cast with nickel-chromium alloy. All specimens were randomly divided into 2 groups to be cem...

This paper deals optimized model to investigate the effects of peak current, pulse on time and pulse off time in EDM performance on material removal rate of titanium alloy utilizing copper tungsten as electrode and positive polarity of the electrode. The experiments are carried out on Ti6Al4V. Experiments were conducted by varying the peak current, pulse on time and pulse off time. A mathematic...

Bearing-foreign material deposition onto a femoral head can occur from contact with an acetabular shell due to dislocation, reduction, or subluxation. The purpose of this study was to comprehensively characterize deposit regions on retrieved cobalt-chrome femoral heads from metal-on-polyethylene total hip arthroplasties that had experienced such adverse events. The morphology, topography, and c...

Ultrasonic pulse frequency tungsten inert gas welding technology was adopted to join Ti-22Al-25Nb alloy. There were some cracks in the alloy weld joint after post-weld heat treatment. The hardness and Young’s modulus of α 2 , O, β /B2 phases examined with an situ nanoindentation technique. phase transition stresses three different analyzed explain why occur during results show that mean is high...

V. Clavijo Jordan, and K. M. Bennett School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ, United States Introduction: A fundamental challenge in molecular MRI is the sensitivity to delivered contrast agents (1). Thus, there is a critical need to increase the relaxivity of current contrast agents to detect sub-nanomolar concentrations in vivo. Natural nanopar...