论文部分内容阅读
本文对化学镀Ｎｉ－Ｐ及Ｎｉ－Ｐ－ＳｉＣ非晶合金镀层的组织结构、成分、显微硬度、耐磨性、耐蚀性及晶化规律等作了一系列研究．实验结果表明：（１）化学镀Ｎｉ－Ｐ非晶合金具有优良的耐磨性和耐蚀性；（２）Ｎｉ－Ｐ非晶在加热过程中具有两个明显的放热峰，２３５℃为Ｎｉ３Ｐ相的形核孕育峰和３９１℃为Ｎｉ３Ｐ相的析出峰，因而使得Ｎｉ－Ｐ非晶合金在４００℃×１ｈ热处理后具有最大的显微硬度和最佳的耐磨性；（３）化学镀Ｎｉ－Ｐ－ＳｉＣ复合镀层具有更高的显微硬度和更佳的耐磨性，尤其是在大载荷长时间下显示出优越性．
In this paper, a series of researches have been done on the microstructure, composition, microhardness, wear resistance, corrosion resistance and crystallization of Ni-P and Ni-P-SiC amorphous alloy coatings. The experimental results show that: (1) Electroless Ni-P amorphous alloy has excellent wear resistance and corrosion resistance; (2) Ni-P amorphous has two obvious exothermic peaks during heating, and 235 ℃ is Ni3P phase nucleation peak and 391 ℃ for Ni3P phase precipitation peak, making the Ni-P amorphous alloy after 400 ℃ × 1h heat treatment with maximum hardness and the best wear resistance; (3) Chemistry Ni-P-SiC composite coating with a coating of higher microhardness and better wear resistance, especially in a large load for a long time showed the superiority.