化学镀镍基合金的组织和性能的研究  

Study on Microstructure and Properties of ElectrolessNickel Based Alloys

作　　者：张恒华[1] 张晓燕[1] 陈大明 魏绍琴 

机构地区：[1]上海大学材料科学与工程学院金属材料系

出　　处：《上海大学学报（自然科学版）》1998年第3期269-274,共6页Journal of Shanghai University:Natural Science Edition

摘　　要：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．The composition, microstructure, microhardness, wear resistance, corrosion resistance and　crystallization of electroless NiP and NiPSiC amorphous coatings have been investigated. The main results are as follows: (1) Electroless NiP amorphous coatings exhibit good wear resistance and corrosion resistance. (2) From DAT digram of NiP amorphous coating two thermal releasing peaks at 235℃ and 391℃,corresponding to the nucleation and precipitation of Ni3P phase, respectively, are observed. This can explain the appearance of the highest microhardness and wear resistance at 400℃×1h heat treatment for NiP coatings. (3) Electroless NiPSiC composite coatings show better microhardness and wear resistance than those of electroless NiP coatings, especially at higher loading and longer service.

关 键 词：镍基合金 组织 化学镀 耐磨性 耐蚀性 机械性能 

分 类 号：TG174.44[金属学及工艺—金属表面处理]