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首页> 外文期刊>Journal of Materials Engineering and Performance >Effect of Tin addition on the microstructure development and corrosion resistance of sintered 304L stainless steels
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Effect of Tin addition on the microstructure development and corrosion resistance of sintered 304L stainless steels

机译：添加锡对304L烧结不锈钢显微组织发展和耐蚀性的影响

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摘要

The effect of tin powder addition on the microstructure development during sintering and corrosion resistance of the 304L-Sn metallurgical system was investigated. Specimens containing 1 to 4 wt% Sn were sintered in hydrogen at temperatures ranging from 800 to 1300℃. During sintering at temperatures below 1000 ℃, most of the liquid phase was retained at the site originally occupied by the tin powder. At temperatures above 1050 ℃, the tin-base liquid phase spread and uniformly distributed among the 304L solid particles. Adding tin powder and the resultant liquid phase led 304L powder compacts to expand during sintering. An immersion test in 1 M H{sub}2SO{sub}4 and metallographic observation showed that pitting always initiated at the spots with lower tin content, and the tin atom enrichment had the beneficial effect of improving the corrosion resistance of sintered 304L stainless steels.
机译：研究了锡粉的添加对304L-Sn冶金系统烧结过程中显微组织发展和耐蚀性的影响。含1-4％（重量）Sn的试样在氢气中于800-1300℃范围内烧结。在低于1000℃的温度下烧结时，大多数液相保留在锡粉最初占据的位置。在1050℃以上的温度下，锡基液相扩散并均匀分布在304L固体颗粒中。添加锡粉和所得的液相导致的304L粉末压块在烧结过程中膨胀。在1 M H {sub} 2SO {sub} 4中进行的浸没测试和金相观察表明，点蚀总是在锡含量较低的部位开始，并且锡原子的富集具有改善烧结304L不锈钢耐蚀性的有益作用。

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