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采用镍基G3合金为电极,利用瞬态电能表面强化工艺在P110油套管钢(P110钢)表面沉积镍基合金涂层,以提高其表面性能。借助扫描电镜和X射线衍射仪,对瞬态电能沉积涂层的表面形貌、显微组织和相结构进行分析和表征。利用摩擦磨损试验对比研究P110钢和涂层的摩擦磨损特性。结果表明:涂层连续、致密,其相组成与G3合金电极一致。与P110钢相比,涂层具有较高的硬度和摩擦系数;较低的磨损失重。瞬态电能沉积涂层显著提高了P110钢的耐磨性。
Nickel-based G3 alloy was used as the electrode, Ni-based alloy coating was deposited on the surface of P110 oil-filled casing steel (P110 steel) by transient electrical surface strengthening to improve its surface properties. The surface morphology, microstructure and phase structure of the transient electric deposition coatings were analyzed and characterized by scanning electron microscopy and X-ray diffraction. Friction and wear tests were used to compare the friction and wear properties of P110 steel and the coating. The results show that the coating is continuous and dense, and its phase composition is consistent with the G3 alloy electrode. Compared with P110 steel, the coating has higher hardness and friction coefficient; lower abrasion loss. Transient electrical deposition coatings significantly improve the wear resistance of P110 steel.