摘要
通过单因素实验确定了以镀层光亮度和结合力为目标值的最适宜的化学镀镍–磷–硼合金的工艺条件,然后以此为中心水平进行响应面Box-Behnken试验设计,以镀速为响应值,建立了化学镀镍–磷–硼多元二次回归动力学方程,并对模型进行了显著性检验和实验验证。由回归模型方差分析可知,所建立的动力学方程的F值为27.02,P值(Prob>F)<0.000 1,说明模型极其显著;可决系数R-squared、Adj.R-squared和Pred.squared分别为0.965 6、0.929 8和0.820 2,表明模型回归拟合度较高;信噪比Adeq.Precision很大,为24.57,说明模型可靠;镀速的模型值与大部分水平组合的实验值的相对误差小于5%,证实模型与实验具有较好的吻合度。多元二次回归动力学方程是化学镀自催化反应动力学方程的一种新的表达形式,其显著性和可靠性可自动通过Design-Expert 7.0软件进行检验,它与化学镀幂函数型速率方程一样,可用于预测不同工艺条件下的镀速。
The optimal process conditions for electroless plating of nickel-phosphorus-boron alloy coatings were determined based on single factor experiments with brightness and adhesion strength of the deposit as targets, and then used as the central levels for a Box-Behnken experiment design by response surface methodology. A multiple quadratic regression kinetic equation expressing the deposition rate as a function of process conditions was established. The significance test was carried out and the model was verified experimentally. Based on variance analysis of the regression model, the F value of the established kinetic equation is 27.02, and the P value （Prob 〉 F ） is less than 0.000 1, showing that the model is significant. The coefficients of determination denoted as R-squared, Adj. R-squared, and Pred. squared are 0.965 6, 0.929 8 and 0.820 2, respectively, showing a good fit. The signal-to-noise ratio denoted as Adeq. Precision is 24.57, a big value, indicating the reliability of the model. The relative errors when comparing the deposition rates obtained by the model and the most of the experimental values for various combination of the factors at different levels are less than 5%, proving that the prediction is in good agreement with the experiment. Multiple quadratic regression kinetic equation is a new expression for autocatalytic reaction kinetics of an electroless plating process, and its significance and reliability can be tested by Design-Expert 7.0 software. Similar to the power- law type rate equation, the multiple quadratic regression kinetic equation can be used to predict the deposition rates of a electroless plating process under different conditions.
出处
《电镀与涂饰》
CAS
CSCD
北大核心
2015年第20期1155-1159,共5页
Electroplating & Finishing
基金
江西省重大科研专项计划(20124ABE02104)
关键词
镍–磷–硼合金
化学镀
动力学方程
响应面法
多元二次回归
镀速
结合力
光亮度
nickel-phosphorous-boron alloy
electroless plating
kinetic equation
response surface methodology
multiplequadratic regression
deposition rate
adhesion strength
brightness
