An ideal biomaterial is expected to exhibit properties such as a very high biocompatibility, that is, no adverse tissue response. Also, it must have a density as low as that of bone, high mechanical strength and fatigue resistance, low elastic modulus and good wear resistance. It is very difficult to combine all these properties in only one material. Some metals are used as biomaterials due to ...

Development of a Nanoscale Precipitation-Strengthened Creep-Resistant Aluminum Alloy Containing Trialuminide Precipitates Keith Edward Knipling This research is toward developing a castable andheat-treatable precipitation-strengthened aluminum alloy exhibiting coarseningand creep resistance at temperatures exceeding 400°C. Criteria for selecting alloying elements capable of producing such an al...

Refractory castables are utilized in hazardous environments and thus their reliability should be accurately evaluated to avoid incidents. This work aims measure the fracture energy of a high-alumina refractory with mullite-zirconia aggregates at 600 °C. Wedge Splitting Tests were performed on 5 samples different sintering temperatures. Images acquired analyzed via Digital Image Correlation (DIC...

The forrning process is very important in the production of ceramics because the defects introduced during this manufacturing step will remain in the product even after the sintering process.In this work the rheological properties of aqueous suspensions of Si3N4-Si-A1203-Zr0 2 powders are studied in order to define the appropriate conditions for preparing good slips for the production of high t...

ion) Same as F20 612F. First-year MFAs (only) register for F20 512F. This course examines strategies of abstraction and nonobjective image-making that originate in the painting studio, including those that are driven by concept, material, space and/ or process. Readings and discussion will examine the evolution and history of abstraction and its present applications within a contemporary studio...

The Submerged Split Chill Contraction (SSCC) test can measure forces in a solidifying steel shell under controlled conditions that match those of commercial casting processes. A computational model of this test is developed and applied to increase understanding of the thermal-mechanical behavior during initial solidification of steel. Determining the stress profile is difficult due to the compl...

This paper describes recent progress towards using the Mold Shape Deposition Manufacturing (Mold SDM) process for the fabrication of structural ceramic parts for a miniature jet engine application. The goal is to improve the engine's thrust to weight ratio by increasing operating temperature and reducing weight. Mold SDM is an additive-subtractive layered manufacturing process for building fugi...