粉体および粉末冶金
Online ISSN : 1880-9014
Print ISSN : 0532-8799
ISSN-L : 0532-8799
研究
焼結SUS304鋼, SUS316鋼の耐食性に及ぼすショットピーニングの影響
砂田 聡真島 一彦石田 修一菅野 光輝武田 義信
著者情報
ジャーナル オープンアクセス

2005 年 52 巻 7 号 p. 544-550

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The conventional die (C/C) and warm die compaction (W/C) were applied to prepare the green powder compacts of SUS304 and SUS316 stainless steels. These green compacts were sintered at 1393 K, 1473 K and 1523 K in three kinds of atmospheres, i.e. N2 gas, Ar gas and vacuum, and some of the sintered compacts thus obtained were subjected to shot peening treatment. Both mass losses of the SUS304 and SUS316 sintered specimens prepared by W/C process decreased almost linearly with an increase in sintered density ratio. The data points, however, fell on two different straight lines, and it was recognized that the corrosion resistance of SUS316 sintered specimen was better than that of SUS304 sintered specimen. The reactivation ratios of the SUS304 sintered specimens prepared by C/C process were about 30% and about 58% respectively for without shot peening and with shot peening treatment, which indicates that the corrosion resistance could not be improved by the shot peeing treatment. And it was also confirmed that this reactivation ratio could not be improved by shot peening process on both the SUS304 and SUS316 sintered specimens prepared through the W/C process.

著者関連情報
© 2005 一般社団法人粉体粉末冶金協会

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