SUS316ステンレス焼結材に及ぼすSi,MnおよびC成分の影響 (ステンレス鋼粉<特集>)

概要

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Tests of mechanical properties and corrosion resistance were made about sintered material prepared under different conditions using water-atomized SUS316 stainless steel powders with varied Si, Mn and C composition.The obtained results are as follows:(1) Sintering material gets stronger when it is sintered with higher temperature. When Si was about 1% the tensile strength and elongation are 28kg/cm2 and 20% respectively and the impact value is 7kg/cm2.(2) With the increase of Si composition tensile strength and impact value of sintered materials are improved. The increase of Mn composition gets both lower.(3) When C composition is much, sintered materials are inclined to be more or less rusted, but not accompanied by the decrease of bend strength.(4) The HNO3-solution resistance becomes worse around 2% of Si and becomes better when Mn and C composition are much. The H2SO4-solution resistance gets best around 0.7% of Si and gets better when Mn composition is increased.
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