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通过对化学镀Ｎｉ－ Ｐ－ ＳｉＣ复合镀层的研究，找到了制备ＳｉＣ／Ｎｉ－ Ｐ 功能梯度材料（ＦＧＭ） 的工艺方法。并采用光学显微镜、电子探针分析仪及热震试验等方法和手段对功能梯度材料的组织、形貌、成分与镀层结合力进行了研究。结果表明，功能梯度材料中ＳｉＣ微粒以弥散状态沿镀层厚度方向呈梯度分布，无团聚结块现象，材料致密，组织细小。功能梯度材料较单层Ｎｉ－ Ｐ－ ＳｉＣ复合镀层以及Ｎｉ－ Ｐ／Ｎｉ－ Ｐ－ ＳｉＣ 双层镀层具有更好的结合强度。
Through the study of electroless Ni-P-SiC composite coating, the technological process of preparing SiC / Ni-P functional graded material (FGM) was found out. The microstructure, morphology, composition and coating adhesion of functional graded material were studied by means of optical microscope, electron probe analyzer and thermal shock test. The results show that SiC particles distributed gradiently along the thickness of the coating in the functionally graded material with no agglomeration and agglomeration. The material is dense and the microstructure is fine. Functionally graded materials have better bonding strength than single-layer Ni-P-SiC composite coatings and Ni-P / Ni-P-SiC dual-layer coatings.