金属学报  1965, Vol. 8 Issue (4): 499-506

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18鉻-8镍型不銹鋼中的貧鉻区随着敏化时間的发展

华保定;沈行素;周德瑞;李桂芝

中国科学院应用化学研究所;中国科学院应用化学研究所;哈尔滨工业大学;实习人员;中国科学院应用化学研究所

THE DEVELOPMENT OF CHROMIUM-DEPLETED ZONE IN 18-8 STAINLESS STEEL WITH TIME OF SENSITIZATION

HUA PAO-TING; SHEN HSING-SU; CHOU TEH-JUI; LI KUI-CHIH (Institute of Applied Chemistry; Academia Sinica)

华保定;沈行素;周德瑞;李桂芝. 18鉻-8镍型不銹鋼中的貧鉻区随着敏化时間的发展[J]. 金属学报, 1965, 8(4): 499-506.
, , , . THE DEVELOPMENT OF CHROMIUM-DEPLETED ZONE IN 18-8 STAINLESS STEEL WITH TIME OF SENSITIZATION[J]. Acta Metall Sin, 1965, 8(4): 499-506.

摘要 参考文献 相关文章 Metrics 全文: PDF(555 KB)   摘要: 利用以前报道过的恆电位量电法以及化学分析法,进一步研究了18鉻-8镍型不锈钢中的贫鉻区随着敏化处理时间的发展情况.得到了敏化时间不同时鉻在贫鉻区中的分布曲线,估计出鉻在650℃的溫度下在贫鉻区中离碳化物层100埃处的扩散系数为5×10~(-16)厘米~2/秒.结果表明,析出在晶界的碳化物的量大体上按对数规律随敏化时间增长.此外,18鉻-8镍型不锈钢中所含碳的总量中只要有1—2％析出在晶界,就足以引起严重的晶间腐蚀. Abstract：The development of the chromium-depleted zone with time of sensitization has been studied by the potentiostatic-coulometric method reported previously. The distribution curves of chromium in the depleted zone at different time of sensitization have been obtained. From these curves, the diffusion coefficient of Cr in the depleted zone at 650℃ is estimated to be 5×10~(-16)cm~2/sec. It is shown that the amount of chromium carbide precipitated at the grain boundaries increases nearly logarithmically with time of sensitization, and the precipitation of 1—2% of carbon contained in the steel at the grain boundaries is sufficient to cause severe intergranular corrosion. 收稿日期: 1965-04-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 华保定 沈行素 周德瑞 李桂芝 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1965/V8/I4/499 [1] Hopkinson, B. E., Carroll, K. G.:Nature, 1959, 184, 1479． [2] Voeltzel, J., Plateau, J.:Compt. Rend., 1961． 252, 2705． [3] #12 [4] 华保定、沈行素、邹中坚:科学通报,1964,(1) ,81． [5] 华保定、沈行素、周德瑞、李桂芝:金属学报,1965,8,98． [6] Fleetwood, M. J.:J. Inst. Metals, 1962, 90, 429． [7] Alm, S., Kiessling, R.:J. Inst. Metals, 1963, 91, 190． [8] 华保定、邹中坚、沈行素:应化集刊,1964,11集,102． [9] Philibert, J., Henry, G., Robert, M. et al.:Compt. Rend., 1961, 252, 1320． [10] Seith, W.:Diffusion in Metallen, (Springer-Verlag, Berlin, 1955) , p. 57．e No related articles found! Viewed Full text Abstract Cited   Shared      Discussed