摘要
针对氧化铝陶瓷封装外壳在化学镀镍过程中出现的漏镀、镍点以及异色的问题,采用控制变量法研究了除油液、滚筒转速、退火温度对镀层外观的影响,采用体视显微镜、扫描电镜、能谱仪等观察了镀层的宏观形貌和微观结构。结果表明:采用80 g/L NaOH溶液作为除油液,在60℃下超声清洗10 min,自来水冲洗3遍,去离子水超声清洗5 min的条件下,可改善漏镀现象。通过对来件进行筛选和固定滚筒转速为5 r/min,可以减少镍点现象的产生。当退火温度为800℃时,异色现象可得到有效解决。
In order to solve the problems of nickel leakage,nickel spot and heterocolor in electroless nickel plating of alumina ceramic package,the influences of degreasing solution,roller speed and annealing temperature on the appearance of the coating were studied by the control variable method.The macroscopic morphology and microstructure of the coating were observed by stereomicroscope,scanning electron microscope and energy dispersive spectrometer.The results show that the phenomenon of plating leakage can be improved by using 80 g/L NaOH solution as the degreasing solution,ultrasonic cleaning at 60℃for 10 min,washing with tap water for 3 times,and ultrasonic cleaning with deionized water for 5 min.By screening the incoming parts and fixing the rotating speed of the drum to 5 r/min,the nickel spot phenomenon can be reduced.When the annealing temperature is 800℃,the discoloration phenomenon can be effectively solved.
作者
刘朋
李慧超
张鸿军
康建宏
杜支波
Liu Peng;Li Huichao;Zhang Hongjun;Kang Jianhong;Du Zhibo(Chengdu Hongke Electronic Technology Co.,Ltd.,Chengdu 610100,China;Shanghai Aeronautical Radio Research Institute,Shanghai 200241,China)
出处
《电镀与精饰》
CAS
北大核心
2023年第8期98-103,共6页
Plating & Finishing
关键词
氧化铝
化学镀镍
漏镀
退火
alumina
electroless nickel plating
leakage plating
annealing
