研究了粉末法 RE-B 共渗活性原子的产生、吸收和共渗层形成的机理,以及稀土元素在渗层中的迁移过程。结果表明,活性稀土元素原子可通过热还原产生;稀土元素促进了活性硼原子的产生、吸附与吸收;稀土元素原子的扩散和钢中杂质元素 Si、S、P 等以及渗层中的各种晶体缺陷有着密切的联系。 The formation, absorption and co-diffusion of RE-B active atoms by powder method were studied, and the migration process of rare earth elements in the diffusion layer was also studied. The results show that the active rare earth elements can be produced by thermal reduction. The rare earth elements promote the generation, adsorption and absorption of active boron atoms. The diffusion of rare earth atoms and the impurity elements such as Si, S and P, Crystal defects are closely linked.