The Author

Dr Evan K. Ohriner is a Distinguished Development Staff member in the Materials Science and Technology Division of the Oak Ridge National Laboratory, U.S.A. His main interest is in processing of refractory metals and alloys. In 2005 Dr Ohriner was honoured by ASM International as an ASM Fellow ‘for the development of iridium alloys and high-temperature and wear-resistant materials used in space exploration and energy generation and transmission’.

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Processing of Iridium and Iridium Alloys

E. K. Ohriner

Oak Ridge National Laboratory, Materials Science and Technology Division, PO Box 2008, Oak Ridge, TN 37831, U.S.A.;

Platinum Metals Review

Volume 52 Issue 3 July 2008 Pages 186-197
DOI 10.1595/147106708X333827

Article Synopsis

Iridium and its alloys have been considered to be difficult to fabricate due to their high melting temperatures, limited ductility, sensitivity to impurity content and particular chemical properties. The variety of processing methods used for iridium and its alloys are reviewed, including purification, melting, forming, joining and powder metallurgy techniques. Also included are coating and forming by the methods of electroplating, chemical and physical vapour deposition and melt particle deposition.

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