【摘要】 本文应用光学显微镜,扫描电镜能谱、电子探针、X光衍射等方法观察和分析了T₁₀、GCr15钢铬钒复合渗层的组织结构。结果表明,整个渗层是由内部的铬碳化物层和外部的钒碳化物层所组成,渗层主要相为（CrFe）₇C₃和V₈C₇+V₄C₃。将复合渗层与单一渗层的硬度梯度和耐蚀性能比较,前者硬度变化较缓和,在10%HCl溶液和油田污水中耐蚀性有所提高。此外,作者还对复合碳化物层的形成机理进行了初步探讨。更多还原

【Abstract】 The structures of chromium-Vanadizing multicarbide coating for T10, GCr15 steel were observed and analysed by means cf optical microscope, EDAX, EPM and X-ray diffraction. The result showed that the whole coating, whose main phase was （Cr·Fe）₇C₃ and V₈C₇+V₄C₃, consisted of the carbide-chromium layer of inside and the carbide-vanadium layer of outside. Compared with gradient, change of hardness and corrosion resistance of the single carbide coating, the change of hardness in the multicarbide coating was much slower and its corrosion resistance was improved in the solution of 10%HCl or in the polluted water from the oil field. Besides, the author also gave a prelimiary discussion about the mechanism of the multicarbide coating.更多还原