摘要
借助于扫描电子显微镜和X -射线衍射仪 ,研究了不同工艺条件下化学镀锡层的成分、表面形貌及组织结构 ,同时对测试结果做分析。结果表明 :(1)通过控制沉积时间 ,可获得锡的质量分数为 92 %～ 97%半光亮银白色的锡镀层 ,此外镀层中还含有少量的Cu及微量的Fe、N、C、S、O等元素。 (2 )时间越长、温度越高 ,沉积的晶粒粒度越大。添加剂B和添加剂C有明显的细化晶粒作用。 (3 )沉积时间延长 ,镀层中 β-Sn相的峰值增强 ,Cu相峰值减弱 。
By means of X-diffraction and SEM, components, surface morphologies and structure of electroless tin plating coating are studied, in the meantime, the results are analyzed. The results show:1. The half-bright and silvery-white tin coating containing 92～97wt% tin has been obtained by controlling the plating time. In addition, little Cu and subtle elements such as Fe, N, C, S, O also exists in the coating; 2. Crystalline size becomes bigger and bigger with increasing the plating time or bath temperature. Additive B and additive C have the functions of refining crystalline; 3. The diffraction peak of tin is stronger and the peak of copper is weaker with the rise of the plating time, which indicates that the thickness of coatings increases continually.
出处
《表面技术》
EI
CAS
CSCD
北大核心
2002年第6期65-67,共3页
Surface Technology
