渗硼层硬度高,能改善球墨铸铁(以下简称球铁)的摩擦学性能,而等温淬火能提高基体的力学性能。对含Cu、Cu-Ni和Cu-Ni-Mo的合金球铁试样进行了盐浴(硼砂+铝)渗硼,渗硼温度分别为850℃、900℃和950℃,时间2 h和4 h。通过所获得的渗层数据确定合金球铁渗硼的扩散系数和激活能。计算求得的扩散系数与通过直接测定渗层厚度得出的扩散系数相接近。含Cu或Cu-Ni的试样激活能为141.27 kJ/mol,而含Cu-Ni-Mo的试样激活能为212.98 kJ/mol。统计参数与相关系数(尺)吻合良好。 Boronizing layer hardness, can improve the ductile iron (hereinafter referred to as ductile iron) tribological properties, and isothermal quenching can improve the mechanical properties of the matrix. Salt bath (borax + aluminum) boronizing was performed on the alloy ductile iron samples containing Cu, Cu-Ni and Cu-Ni-Mo with boronizing temperatures of 850 ℃, 900 ℃ and 950 ℃, respectively, for 2 h and 4 h The diffusion coefficient and activation energy of the boronizing of the alloyed ductile iron were determined by the obtained layer data. The calculated diffusion coefficient is close to the diffusion coefficient obtained by directly measuring the thickness of the layer. The activation energy of the sample containing Cu or Cu-Ni is 141.27 kJ / mol, while the activation energy of the sample containing Cu-Ni-Mo is 212.98 kJ / mol. Statistical parameters and correlation coefficient (ruler) good agreement.