论文部分内容阅读
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T_(10)、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)_7C_3和V_8C_7+V_4C_3。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。
In this paper, the microstructures of T_ (10) and GCr15 steel-chromium-vanadium composite infiltrating layers were observed and analyzed by optical microscope, scanning electron microscopy, electron probe and X-ray diffraction. The results show that the whole layer consists of an inner layer of chromium carbide and an outer layer of vanadium carbide. The main phases of the layer are (CrFe) _7C_3 and V_8C_7 + V_4C_3. The hardness gradient and corrosion resistance of composite permeable layer and single permeable layer were compared. The hardness of the former changed moderately, and the corrosion resistance of 10% HCl solution and oilfield wastewater was improved. In addition, the author also discussed the formation mechanism of composite carbide layer.