Effect of plasma electrolytic polishing on the wear and corrosion resistance of medium carbon steel after its plasma electrolytic boriding was investigated. An X-ray diffractometer was used to analyse the phase composition of the modified surface; the layer structure was investigated using an electron microscope. The layer microhardness and surface roughness were measured by standard methods. Wear resistance of steel was studied under dry friction conditions with an alumina counter-body. Corrosion resistance of samples was tested in a 3.5% sodium chloride solution. It was found that plasma electrolytic polishing removes the loose part of the oxide layer and provides a decrease in surface roughness from 1.6 μm after boriding to 0.7 μm. Combined processing under optimal conditions increases the microhardness up to 1020 HV and wear resistance by 17 times compared to untreated steel. Corrosion current density is reduced by 2.5 times due to the protective effect of the dense part of the oxide layer and the formation of iron borides.

研究了等离子电解抛光对中碳钢等离子电解渗硼后耐磨性和耐腐蚀性能的影响。用X射线衍射仪分析改性表面的相组成；使用电子显微镜研究层结构。通过标准方法测量层显微硬度和表面粗糙度。在干摩擦条件下用氧化铝对体研究钢的耐磨性。在 3.5% 氯化钠溶液中测试样品的耐腐蚀性。发现等离子电解抛光去除了氧化层的松散部分，并使表面粗糙度从硼化后的 1.6 μm 降低到 0.7 μm。与未经处理的钢相比，在最佳条件下的组合加工可提高高达 1020 HV 的显微硬度和 17 倍的耐磨性。由于氧化层致密部分的保护作用和铁硼化物的形成，腐蚀电流密度降低了2.5倍。