[目的]在0Cr13Ni5Mo不锈钢表面化学镀Ni–P合金，以提高其硬度和耐磨性。[方法]研究了镀液温度和pH对化学镀Ni–P合金沉积速率，镀层宏观和微观形貌及显微硬度的影响。[结果]当温度为80℃、pH为4.2时，所得Ni–P合金镀层最均匀平整，表面胞状结构排列紧密，呈非晶态结构，显微硬度高达824.10 HV。[结论]本研究可为水电装备关键部件表面强化提供参考，但后续应进一步研究Ni–P合金镀层在复杂工况下的长期服役性能及其耐蚀性。

[Objective] Electroless Ni–P alloy plating was carried out on surface of 0Cr13Ni5Mo stainless steel to enhance its hardness and wear resistance. [Method] The effects of bath temperature and pH on deposition rate, macro/micromorphology, and microhardness of Ni–P alloy coating were studied. [Result] The Ni–P alloy coating obtained at 80 ℃ and pH 4.2 exhibited the most uniform and smooth surface, with compactly arranged cellular structures and amorphous phase, and microhardness up to 824.10 HV, indicating superior mechanical properties. [Conclusion] This study provides insights for surface strengthening of critical hydropower components. However, further research is required to evaluate the long-term service performance and corrosion resistance of Ni–P alloy coating under complex working conditions.