氮在H13钢中的扩散行为

The Diffusion Behavior of Nitrogen in H13 Steel

摘要: 对H13钢(4Cr5MoSiV1)在不同温度下进行辉光离子渗氮试验,对渗氮后试样的硬度与渗氮前后试样的质量进行了测量.计算出氮在其中的扩散激活能为131.48 kJ/mol,793 K时氮在其中的扩散系数为2.34×10-12 m2/s.

Abstract: Specimens of H13 steel (4Cr5MoSiV1) were glow plasma nitrided at diferent temperature.The Microhardness of the nitrided layers was measured.The mass of non-nitrided and nitrided Specimens was also detected.The activation energy for nitriding is 131.48 kJ/mol for corresponding specimen on the basis of ξn=K0·e-Q/RTτ.The diffusion coefficient is 2.34×10-12 m2/s at 793 K by Fick′s first law.