摘要
采用座滴法实验研究了CuAlSiTi系活性钎料中的各组分含量对SiC陶瓷润湿角的影响 ,借助于SEM和EPMA结合热力学探讨了界面反应。通过推导润湿角与界面反应吉布斯能变化ΔG的函数关系进一步阐述了各组分对润湿角的影响机制 ,CuAlSiTi合金对SiC陶瓷的润湿性随Ti ,Al含量的增加 ,润湿性提高 ,随Si含量的增加 ,界面反应受到抑制 ,润湿性降低。
By using the sessile drop method, the effect of additives on the wettability of Cu matrix alloy on SiC substrates was studied. With the help of SEM and EPMA,on basis of thermodynamics, the interfacial reaction was discussed. By deducing the function relation between the contact angle on SiC and the Δ G of the interfacial reaction, the influence of each element in alloy on its wettability was set forth and the conclusion, that either increasing the content of Ti and Al or decreasing the content of Si will improve its wettability on SiC, is obtained. However, in some cases,in order to restrain CuAlSiTi/SiC interfacial reacion, addition of Si into the brazing alloy is also required.
出处
《稀有金属》
EI
CAS
CSCD
北大核心
2002年第5期327-331,共5页
Chinese Journal of Rare Metals
基金
国家自然科学基金资助项目 (183 92 911)
关键词
润湿性
润湿角
活性钎料
碳化硅陶瓷
wettability
contact angle
reactive brazing alloy
SiC
