利用扫描电镜、X射线衍射等技术对采用辉光离子渗镀技术在不同温度下于碳钢表面形成的钨渗镀层进行了研究。结果表明：渗镀层表面的沉积层为形成织构的体心立方晶体钨，内侧的扩散层为固溶钨的α-Fe相，其上分布着FeW3C。在较低渗镀温度下，钨沉积层形成锥状晶，具有较高的硬度，而耐蚀性相对较差。随渗镀温度升高，锥状晶不断长大，最后形成柱状晶，这时耐蚀性较好而硬度相对降低。
The formation of tungsten alloy layer on carbon steel by double glow plasma surface alloying has been studied by means of SEM、XRD and other measurements. The surface layer so produced could he divided into three parts: deposition layer, diffusion layer and matrix. The study results showed that the deposition layer was constituted by W with body-centred cubic lattice and preferred orientation. The phase in the diffusion layer was α-Fe solid solution containing W and some carbide FeW3C was found in it. The matrix was T8 carbon steel. With the increase in deposition temperature, the microstructure of the deposition layer changed from the tapered outgrowth to the columnar form. It resulted in the increase of its corrosion-resistance, however, its wear resistance decreased.
参考文献
| [1] |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%