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本文利用近代测试技术对高碳钢渗硼层及其过渡区的相组成进行综合测试分析,实验结果表明:在渗硼层的表层除硼化物外还有微量的 Fe_3(CB)或 Fe_3C 存在;在过渡区除有Fe_s(CB)和 Fe_3C 外还有少量的 Fe_(23)(CB)_6存在。并结合 Fe-C-B 三元合金平衡相图对渗硼层的形成机理做了探讨,认为在非平衡条件下渗硼层的形成机理基本上符合反应扩散原理。
In this paper, the modern testing technology is used to comprehensively analyze the phase composition of the boronizing layer and the transition zone of the high carbon steel. The experimental results show that there are trace Fe_3 (CB) or Fe_3C in addition to the boride in the boronizing layer. Fe_ (23) (CB) _6 is also present in the transition zone except Fe_s (CB) and Fe_3C. The formation mechanism of boronizing layer was discussed based on the equilibrium phase diagram of Fe-C-B ternary alloy. The formation mechanism of boronizing layer under non-equilibrium condition was basically in line with the reaction diffusion principle.