超声波功率对紫铜化学镀锡结构和性能的影响  

Influence of Ultrasonic Power on Structure and Properties of Electroless Tin Plating on Red Copper

作　　者：王英 毕亚军 王正一 李凌霄 孟令坤 WANG Ying;BI Yajun;WANG Zhengyi;LI Lingxiao;MENG Lingkun(College of Mechanical Engineerinng,Hebeisheng Langfang Jishi Xueyuan,Langfang 065000,China;School of Electronic and Control Engineering,North China Institute of Aerospace Engineering,Langfang 065000,China)

机构地区：[1]河北省廊坊技师学院机械系,河北廊坊065000 [2]北华航天工业学院电子与控制工程学院,河北廊坊065000

出　　处：《电镀与精饰》2021年第11期17-22,共6页Plating & Finishing

基　　金：河北省科技计划项目(17211711)。

摘　　要：在紫铜化学镀锡过程中引入超声波,研究了超声波功率对锡镀层的沉积速率、形貌、相结构和耐蚀性能的影响。结果表明:不同超声波功率下制备的锡镀层物相都为Sn和Cu,无明显择优取向。随着超声波功率提高,锡镀层的沉积速率呈现先增大后减小的趋势,形貌发生显著变化,容抗弧半径和|Z|0.01 Hz都先增大后减小,而腐蚀速率先降低后增加。适当提高超声波功率能促进化学镀锡反应的持续进行,同时提高形核率,实现结晶细化使锡镀层的致密性提高,耐蚀性能逐步提高。较佳的超声波功率为100 W,制备的锡镀层沉积速率达到5.3×10^(-2) mg/(mm^(2)·h),其形貌质量较好,表面的颗粒大小均匀、紧密堆积,而且具有良好的耐蚀性能,其|Z|_(0.01 Hz)是常规锡镀层的1.7倍,腐蚀速率较常规锡镀层降低了11.1%。Ultrasonic was introduced in the process of electroless tin plating on red copper,and the influence of ultrasonic power on the deposition rate,morphology,phase structure and corrosion resistance of tin coatings was studied.The results showed that the phase composition of tin coatings prepared under different ultrasonic power was Sn and Cu,and there was no obvious preferred orientation.With the increase of ultrasonic power,the deposition rate of tin coating increased firstly and then decreased,and the morphology of tin coatings changed significantly.Both capacitive reactance arc radius and|Z|0.01 Hz show a trend of first increasing and then decreasing,while the corrosion rate shows a trend of first decreasing and then increasing.Appropriate increasing of ultrasonic power can promote the continuous reaction of electroless tin plating and improve the nucleation rate,then realize crystallization refinement and improve the densification of tin coatings,therefore the corrosion resistance of tin coatings was gradually improved.The ideal ultrasonic power was 100 W,and the tin coating with a deposition rate of 5.3×10^(-2) mg/(mm^(2)·h),better appearance quality and corrosion resistance was prepared.The particles was uniform and tightly packed on surface of the tin coating,and its|Z|_(0.01 Hz) was 1.7 times of that of the conventional tin coating,and the corrosion rate is 11.1%lower than that of conventional tin coating.

关 键 词：化学镀锡 超声波功率 相结构 耐蚀性能 

分 类 号：TQ153.6[化学工程—电化学工业]