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研究了两种不同磷含量化学镀镍层的组织结构、硬度及弹性模量，并着重研究了３０ＣｒＭｏ及ＬＹ１２经化学镀镍后的旋转弯曲疲劳性能。结果表明，低磷微晶镀层较高磷非晶镀层具有更高的硬度、弹性模量和疲劳抗力；化学镀镍层导致了３０ＣｒＭｏ疲劳强度的显著下降，但能提高ＬＹ１２的疲劳强度，表明化学镀镍层对基体疲劳性能的影响作用主要取决于基体本身疲劳抗力的高低。
The microstructure, hardness and elastic modulus of two electroless Ni-P coatings with different phosphorus contents were studied, and the spin-bending fatigue properties of 30CrMo and LY12 after electroless nickel plating were studied emphatically. The results show that higher phosphorus amorphous coatings have higher hardness, elastic modulus and fatigue resistance than low phosphorus coatings. Electroless nickel coatings lead to a significant decrease of fatigue strength of 30CrMo, but can improve the fatigue strength of LY12. The effect of nickel plating on the fatigue properties of the matrix mainly depends on the fatigue resistance of the matrix itself.