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Platinum Metals Rev., 1997, 41, (2), 85

The Metallurgy of Iridium

Metallurgy and Mechanical Behaviour of Iridium

  • By N. I. Timofeev
  • A. V. Yermakov
  • V. A. Dimitriev
  • P. E. Panfilov
  • Urals Branch of Russian Academy of Science, Ekaterinburg, Russia
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This book selectively reviews papers published over the past 30 years, with a few earlier texts, on the metallurgical and mechanical properties of iridium; roughly half the papers are Russian.

The book is in two sections, the first covering iridium refining, and pyrometallurgical methods for purification of this high melting point metal. This includes remelting scrap in an oxidising environment and electron beam melting/alloying. Iridium recovery after refining and the production of massive single crystals are described. The behaviour of impurities and alloying additions to iridium, in an inert atmosphere, as a function of atmosphere, pressure and temperature is analysed.

The second section examines the mechanical properties of iridium single crystals, including the mechanisms of deformation and fracture, with emphasis on the growth of cracks on the surface of massive single crystals and in thin crystalline iridium foils. Basic methods for working iridium, its alloys and their properties are described. There is discussion of grain structure development and the recrystallisation that occurs during iridium annealing. Finally, a range of applications of iridium, such as use as a container material, particularly for crucibles, and rolled sheet production are briefly mentioned.

The book may be purchased from Dr Sergei M. Pirogov, Ekaterinburg Non-Ferrous Metal Processing Plant, Lenin Ave., 8, 620014 Ekaterinburg, Russia, Fax: +7-3432-58-0739.

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