SUS316ステンレス鋼粉の粉末特性に及ぼすSi, MnおよびC成分の影響
1975 年 46 巻 1 号 p. 11-21
詳細
1975 年 46 巻 1 号 p. 11-21
On the stainless steel powder produced by water-atomization by the determination of its composition balance was considered to be an important task. An investigation was made about water-atomized SUS316 stainless steel powders containing different amount of Si, Mn and C.
The obtained results are as follows:
(1) The powder is inclined to become irregular with the increase of Si composition. When Mn composition is much, the powder is inclined to spheroidize and more surface oxidation is found. As the result, apparent density decreases with the increase of Si composition and increase when Mn composition is much.
(2) Green compact becomes hard to be broken when Si composition is much. Green strength value become almost fixed when Si is over 0.7% and gets weakened with the increase of Mn. C composition has strengthening effect on compact.
(3) The compressability is found best when Si is about 1% or a bit less and Mn is less than 0.3%. It gradually decrease when Mn and C composition are increased.
(4) The sintered density becomes highest around 1% of Si in vacuum sintering at 1, 180°C. The sintering properties at higher temperature is improved when Si composition is much.
