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在以硫酸镍、次亚磷酸钠为主盐的酸性化学镀液中加入氧化铝微粒，通过共沉积获取了在基材表面呈弥散分布的ＮｉＰＡｌ２Ｏ３复合镀层的最佳工艺参数，并讨论了各参数与性能、成分之间的关系。采用光度法分析了镀层成分，其中ｗ（Ａｌ２Ｏ３）为９％～１０％，ｗ（Ｐ）为８％～１１％；采用Ｘ射线衍射仪测定了镀层的结构为非晶态。该镀层经４００℃热处理后，维氏硬度值最高可达１１８２，比ＮｉＰ镀层在该温度下的维氏硬度提高了１５％；磨损实验证实了该温度下耐磨性能提高了４０％，耐蚀性也得到提高。
In the nickel sulfate, sodium hypophosphite as the main salt of the acidic chemical bath by adding alumina particles obtained by co-deposition on the substrate surface was dispersed Ni-P-Al2O3 composite coating the best process parameters and Discussed the relationship between parameters and performance, composition. The composition of the coating was analyzed by photometric method, in which w (Al2O3) was 9% ~ 10% and w (P) was 8% ~ 11%. The structure of the coating was determined by X-ray diffraction. The coating after heat treatment at 400 ℃, the Vickers hardness value up to 1182, Ni-P coating at this temperature Vickers hardness increased by 15%; wear test confirmed that the wear resistance at this temperature increased by 40% Corrosion resistance is also improved.