高密度化ならびにCu, Sn粉プレミックスに伴う焼結ステンレス鋼の密度および耐酸性の変化

概要

論文の詳細を見る
About 316L sintered and afterwards forged stainless steels having 80-100 percent of full density, the influence of water-toughening, sintering atmosphere and addition of Copper and Tin upon density and corrosion resistance was studied. Results are summarized as follows:(1) Linear shrinkage becomes smaller with Cu and Sn addition. When the sintering temperature is higher, appearance of Fe-Ni-Sn alloy phase is observed and the pore becomes bigger and spheroidal in Sn-added sintered steel.(2) The effect of water-toughning, sintering atmosphere and Cu and Sn addition is not observede in nitric acid solution.(3) The corrosion rate of sintered steel in sulfuric acid solution decreases by water-toughning. The corrosion rate of sintered steel sintered in hydrogen is smaller than that in vacuum.(4) In sulfuric acid solution, the improvement of corrosion resistance of sintered steel is remarkable by Cu and Sn addition. And its corrosion rate is 1/5∼1/40 of sintered steel without addition.
大同特殊鋼株式会社の論文