超声波对锡铋合金电镀层的影响

将超声和电沉积相结合电镀了锡铋合金.通过扫描电镜(SEM)和X射线衍射(XRD)对镀层的表面形貌和结晶状态进行了表征,并用光栅光谱法对镀层成分进行了分析,研究了超声波功率对锡铋合金镀层的影响.结果表明:超声波的作用使镀层表面更细致均匀,结晶晶面仍具有以Sn(101)面为主的择优取向,镀层中锡和铋的含量增加,且铋的增加更为显著.超声波提高了镀层的表面性能和质量,加快了电沉积速度,并有利于铋的电沉积和合金的形成,而镀层的择优取向不变,仅择优系数略有降低.

Ultrasonic Electroplating Tin-Bismuth Alloy

Tin - bismuth alloy was electroplating by electrodepositing associated with ultrasonic agitation. The morphology and crystal state of deposit were characterized with SEM and XRD, and the components of deposit were analyzed by spectrum. The results show that the deposit with ultrasonic effect is more nice and uniform. The preferred crystal orientation is Sn(101) plane mainly. The contents of tin and bismuth in the coating both increase, especially the bismuth. Ultrasonic improves the surface performances and qualities of deposit, accelerates the electrodepositing process, and then is in favor of bismuth electrodepositing and alloy growing. The preferred crystal orientation is kept only a little decrease of preferred orientation coefficient.