摘要
用均匀设计试验优化了镀液组成。用综合指标Z表示镀层质量,试验数据用统计软件处理,在所得到的Z与各因素的回归方程中,标准系数最小的因素对指标的影响最小而被淘汰。用计算机对三元配位体镍磷化学镀体系中的12个可变组成进行逐级淘汰,筛选优化,最后获得仅有7个可变组成的单配位体体系。从该体系中同样镀出了优质的镜面全光亮镍磷镀层。优化后的镀液在镀速和寿命上都有所提高。在此基础上研究了诸因素对镀液寿命及镀速的影响,用正交试验确定了补加液的组成,乳酸和次磷酸钠的补加量对寿命的影响最大,当装载量为1.4dm2/L时,施镀1h,每升镀液补加0.3mL乳酸,次磷酸钠与镍摩尔比按3.7∶1补加,可以使镀液在周期达到10时仍然保持清澈透明,且镀层质量和镜面光亮的外观维持不变,使用周期可以达到15以上。
The electroless nickel solution bath was optimized by uniform design. Experimental data was processed by statistical software to obtain optimal formula of bath, whose stability and lifetime were all increased. The effects of factors on the depositing velocity and lifetime of solution were studied. Results showed that the supplementary of lactate and hypophosphite were most important. The lifetime of plating solution could reach 15 cycles when the supplement of lactate was 3 mL/L and the supplementing ratio of hypophosphite and nickel was 3.7∶1 every 1 hour under 1.4 dm2/L loading.
出处
《材料保护》
CAS
CSCD
北大核心
2003年第11期24-26,共3页
Materials Protection
关键词
化学镀镍
组成优化
寿命
计算机
均匀设计
electroless nickel plating
formula optimization
lifetime
computer
uniform design
