COMBINATION STRENTHENING PROCESS OF Ni-W-Ti-SiC COMPOSITE COATING AND NITROCARBURIZATION

来源期刊：中国有色金属学报(英文版)1997年第4期

论文作者：Ma Keyi Guo Zhongcheng Wen Mingfen Yang Xianwan

文章页码：149 - 152

Key words：composite electroplating; nitrocarburizing ;combination strengthening

Abstract: The significance and theoretical basis of the combination strengthening process of electro plating Ni W Ti SiC composite coating and nitrocarburization were expounded briefly with the emphasis on the technical conditions of the process and the structure and properties of the coating. The results showed that satisfactory Ni W Ti SiC composite coating can be obtained on the steel when some appropriate complex reagent and additive were selected and the process parameters were controlled. The hardness and wear resistance of the nitrocarburized composite coating are much higher than those of the composite coating without nitrocarburization. Scanning electron microscope investigation indicated that Fe in the matrix diffuses into the coating during nitrocarburization to produce the “nailing up effect” and to increase the joining force between the coating and the matrix remarkably.