한국분말야금학회:학술대회논문집 (Proceedings of the Korean Powder Metallurgy Institute Conference)

한국분말재료학회 (*구 분말야금학회) (The Korean Powder Metallurgy & Materials Institute)
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A New Technology of Hardening Porous Materials of Titan Powders

  • Belyavin, K.E. (Belarusian State Research and Production Powder Metallurgy Concern) ;
  • Minko, D.V. (Research Design and Technology Institute for Welding and Protective Coatings with Pilot Production) ;
  • Reshetnikov, N.V. (Research Design and Technology Institute for Welding and Protective Coatings with Pilot Production)
  • 발행 : 2006.09.24
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초록

A technology of hardening porous materials of titan powders has been elaborated. The technology is based on passing alternating current with duration of ${\sim}10^{-1}{\ldots}10^1$ s through porous ($35{\ldots}40%$) blanks made by method of Sintering by Electric Discharge (SED) by passing a pulse of current with duration of ${\sim}10^{-5}{\ldots}10^{-3}$ s. The influence of technological regimes of porous blanks treatment on their structure and properties is investigated. Geometry and dimension of contact necks between powder particles of obtained samples are evaluated. Variations of porosity and strengths as well as microstructure of porous samples materials before and after treatment are investigated. Optimum range of treatment technological regimes is determined within which porosity of $30{\ldots}35%$ with maximum strength values.

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