热处理对化学镀薄膜结合强度影响

EFFECT OF HEAT TREATMENT\=ON ADHESION OF NICKEL ELECTROLESS COATINGS

利用刮剥式结合强度测量方法，研究了热处理制度对化学镀（ＮｉＰ和ＮｉＢ）薄膜结合强度的影响，以及薄膜硬度与结合强度之间的关系．结果表明，化学镀薄膜的结合强度明显地受热处理温度的影响，在２００℃热处理后获得最高结合强度．

The effects of the heat treatment and coating hardness on the adhesion of electroless nickel coatings, NiP and NiB, have been evaluated by the scraping method. It was found that the adhesion of the electroless nickel coatings (NiP and NiB) was intensely affected by the heat treatment. The highest adhesion was obtained after the heat treatment at 200 1 h, and then the adhesion rapidly decreased with increasing the heat treatment temperature. It was also found that the adhesions was mainly related to the chemical compositions, microstructures and internal stresses of the electroless nickel coatings. The coatings with the amorphous microstructures and low internal stresses usually have a higher adhesion, comparing to the coatings with crystalline structures. \=