NEAR NET SHAPE FABRICATION VIA VACUUM PLASMA SPRAY FORMING
K. Balani, A. Agarwal, T. McKechnie
International Symposium of Research Students on Materials Science and Engineering
abstract:Near net shape fabrication substantiates the manifestation of final structure near to the desired shape, therefore can easily cut down the price of finished product contributed by machining. Though conventional powder metallurgy techniques are prominent in fabricating near net shape structures with controlled porosity, it still lags in producing thin walled complex shapes with functionally graded/ differential structures. Hence, fabrication of complex near net shapes using Vacuum Plasma Spray (VPS) forming has emerged as innovative rapid prototyping technique for a variety of applications. In the present work, the nuances of near net shape fabrication by VPS technique have been explained. Few examples of spray formed structures such as hypereutectic aluminum-silicon, nanostructured aluminum oxide, and intermetallic iron aluminide thin sheet have been discussed. A detailed case study of VPS formed thin TaC structure for ultrahigh temperature application has been elucidated via near net shape fabrication.
keywords:intermetallic; shapes; VACUUM PLASMA; Florida International; fabricating; net shape structures; VPS forming; nanostructured aluminum
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