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Seminar Series
October 10, 2007 EMB 116 |
Dr. V S Raghunathan Plasma Processing of Hard Coatings Host Program: Professor Soumendra N. Basu, Department of Manufacturing Engineering |
| Abstract: Several methods of obtaining hard coatings have been investigated and technologically exploited. Studies using analytical microscopy of nitride layers in these have provided a platform for the development of a technology for achieving hard Cr N coatings on Stainless Steel components for use in the Prototype Fast Breeder Reactor. It has been possible to identify suitable a chemical vapor sources for Cr and Ni and to developed a plasma enhanced chemical vapor process for obtaining hard surface coatings of CrN and the like. Also the method lends itself to the processing of novel nano-structures. Another significant outcome is the development of a plasma process of formation and consolidation of surface coatings on titanium electrodes for electro-catalytic applications, which includes, inter alia, re-processing of nuclear fuels. Brief Biography Dr. V.S. Raghunathan has been a scientist at the Department of Atomic energy in India. He rose to the position of Associate Director and led the research in physical and chemical metallurgy at the Indira Gandhi Centre for Atomic Research (IGCAR) at Kalpakkam. He obtained his PhD from the Indian Institute of Science at Bangalore. He has contributed in several areas of physical metallurgy, especially diffusion, electron microscopy and glow discharge processing. At IGCAR Dr. Raghunathan has extensively studied the structure property relation in various stainless steels, and has engaged in processing of materials and surface treatment. He has also developed a ternary alloy of Ti-Ta-Nb alloy for corrosion resistance application in hot nitric acid application. Since a year, at NFTDC he has initiated R&D on surface processing using CVD and PVD. He is working on a project to develop thin film sensors for sensor applications in engineering systems. He has also been working on microwave processing of ceramics and metals. Dr. Raghunathan has filed 4 patents, and has published 155 papers in journals in India and abroad. He has supervised the thesis of eight Ph.D. students in frontier areas of materials research. Dr. Raghunathan was the convener of the Board of Studies (Engineering Sciences) of the Homi Bhabha National Institute during May 2004- July 2006. He represented India in IAEA for development meeting on Nuclear Engineering Education in Asia. Dr Raghunathan is a Fellow of the Indian Institute of Metals, and a Member of the American Society of Materials. He is a recipient of the IIM NMD Best Metallurgist award in 1991, the MRSI Medal in 1995 and the G D Birla Gold Medal of the Indian Institute of Metals in 2002. |
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