金属学报  2004, Vol. 40 Issue (1): 51-56

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铝化物涂层中β--NiAl相Ni, Al互扩散系数计算

韦华;孙晓峰;郑启

中国科学院金属研究所

Calculation Of Interdiffusion Coefficients Of Ni And Alatoms In Β--Nial Phase As Aluminide Coatings

WEI Hua; SUN Xiaofeng; ZHENG Qi

Institute of Metal Research; The Chinese Academy of Sciences

韦华; 孙晓峰; 郑启 . 铝化物涂层中β--NiAl相Ni, Al互扩散系数计算[J]. 金属学报, 2004, 40(1): 51-56 .
, , . Calculation Of Interdiffusion Coefficients Of Ni And Alatoms In Β--Nial Phase As Aluminide Coatings[J]. Acta Metall Sin, 2004, 40(1): 51-56 .

摘要 参考文献 相关文章 Metrics 全文: PDF( KB)   摘要: 通过纯Ni和K465合金表面渗Al涂层中Al原子浓度分布曲线的分析, 考虑到K465合金复杂的化学成分和显微组织, 基于一定的假设, 推导出Wagner修正式,并分别计算了850, 950和1β050℃纯Ni和K465合金表面渗Al涂层中β--NiAl相Ni, Al互扩散系数.计算结果表明:K465合金表面渗Al层中β--NiAl相Ni, Al互扩散系数明显小于纯Ni表面渗Al涂层中β--NiAl 相Ni, Al互扩散系数；与化学计量比β--NiAl相相似, K465合金表面渗Al中β--NiAl相Ni, Al互扩散系数与Al原子浓度有很大的相关性.简要分析了合金元素和析出相对渗Al涂层中β--NiAl相Al, Ni互扩散系数的影响. 关键词 ： 铝化物涂层,  固渗法     Abstract：The modified Wagner's equation is deduced based on some assumptions and analysis of the Al content profiles in aluminide coatings formed on K465 alloy and pure Ni at 850℃, 950 ℃ and 1050 ℃ for 5 h, respectively. The complicated composition and microstrurcture of K465 alloy are taken into account when deducing the modified Wagner's equation, by which the interdiffusion coefficients are calculated as functions of Al content in β--NiAl phase as aluminide coatings. Calculated results show that the interdiffusion coefficients in β--NiAl phase formed on K465 alloy are evidently less than those on pure Ni, and the interdiffusion coefficients in β--NiAl phase formed on K465 alloy strongly depends on Al content. Effects of alloying elements and precipitates on the interdiffusion coefficients in β--NiAl phase formed on K465 alloy are briefly discussed. Key words： aluminide coating    pack cementation 收稿日期: 2002-12-30      ZTFLH:  TG174.451   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 韦华 孙晓峰 郑启 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y2004/V40/I1/51 [1] Kaysser W. Surf Eng, 2001; 21:305 [2] Das D K, Singh V, Joshi S V. Metall Mater Trans, 1998; 29A: 2173 [3] Bradley A J, Taylor A. Proc Roy Soc, 1938; 166A: 353 [4] Chang Y A, Neumann J P. Progr Solid State Chem. 1982; 9:221 [5] Wagner C. Acta Mater, 1969; 17:99 [6] Kung S C, Rapp R A. J Electrochem Soc, 1988; 3:731 [7] Sun B W, Guan H R, Sun X F, Li T F, Acta Metall Sin, 1991; 27:100(孙碧武,管恒荣,孙晓峰,李铁藩.金属学报,1991;27:100) [8] Garg S P, Kale G B, Patil R V, Kundu T. Intermetallics, 1999; 7:901 [9] Shankar S, Seigle L L. Metall Trans, 1978; 9A: 1467 [10] Chen F S, Wang K L. Surf Coat Technol, 1999; 115:239 [11] Zhu J Z. Comp Mater Sci, 2001; 20:37 [12] Hickl A J, Heckel R W. Metall Trans, 1975; 6A: 431 [1] 曾潮流;吴维旻;郭建亭. 渗铝NiAl-20%Fe金属间合金的高温热腐蚀[J]. 金属学报, 1996, 32(2): 197-201. [2] 范瑞麟. 铝化物涂层结构对涂层-合金系统高温疲劳性能的影响[J]. 金属学报, 1991, 27(5): 54-60. Viewed Full text Abstract Cited   Shared      Discussed