本文研究了Ni-Cu扩散偶界面元素的互扩散行为.对热压扩散连接法制备的Cu-Ni-Cu扩散偶进行退火处理,采用电子探针显微成分分析仪观察扩散偶界面互扩散区的微观组织特征,结合Boltzmann-Matano法研究扩散区内元素的互扩散行为.结果表明:在扩散偶界面处Cu原子的扩散通量远大于Ni原子的扩散通量,互扩散区内Ni原子的距离-浓度曲线关于Matano面不对称,暗示互扩散系数与Ni原子的浓度有关.在每一种退火温度下,互扩散系数均随互扩散区α固溶体中Ni原子分数的增加而单调增大,并且随α固溶体中Ni原子分数的增加,频率因子和互扩散激活能均单调增大.
参考文献
| [1] | 长崎诚三;平林真;刘安生.二元合金状态图集(日)[M].北京:冶金工业出版社,2004:135. |
| [2] | Smigelkas A D;Kirkendall E O .Zinc diffusion in alpha brass[J].Transaction of American Institute of Mining Metallurgical and Patroleum Engineers (AIME),1947,171(01):30-34. |
| [3] | 石德珂.材料科学基础[M].北京:机械工业出版社,1999:218-219. |
| [4] | Helfmeier H;Feller-Kniepmeier M .Diffusion of copper in nickel single crystala[J].Journal of Applied Physics,1970,41(08):3202-3205. |
| [5] | Wang J;Liu HS;Liu LB;Jin ZP .Assessment of diffusion mobilities in FCCCu-Ni alloys[J].Calphad: Computer Coupling of Phase Diagrams and Thermochemistry,2008(1):94-100. |
| [6] | Taguchi O;Iijima Y;Hirano K I .Application of atomic absorption analysis to impurity diffusion of copper in nickel in a wide rang of temperature[J].Journal of the Japan Institute of Metals,1984,48(01):20-24. |
| [7] | Damk(o)hler R;Heumann T H .Diffusionsverhalten von Cu-Ni legierungen[J].Physical Status Solidi A,1982,73(01):117-127. |
| [8] | Heumann V T;Grundhoff K J .Diffusion und kirkendall-effect in kupfer-nickel legierungen[J].Zeitschrift fur Metallkunde,1972,63:173-180. |
| [9] | Masumura R A;Rath B B;PANDE CS .Analysis of Cu-Ni diffusion in spherical geometry for excess vacancy production[J].Acta Materialia,2002,50:4535-4544. |
| [10] | Wang S H;Matlock D K;Olson D L .An analysis of the critical conditions for diffusion-induced void formation in Ni-Cu laminate composites[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,1993,167:139-145. |
| [11] | 宋玉强,李世春,张振亚.Cu-Ni扩散偶的扩散溶解层[J].材料热处理学报,2010(11):23-26. |
| [12] | 黄继华.金属及合金中的扩散[M].北京:冶金工业出版社,1996:57. |
| [13] | Paul A;Kodentsov A A;Van Loo F J J .On diffusion in the β-NiAl phase[J].Journal of Alloys and Compounds,2005,403:147-153. |
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