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采用液相等离子体电解渗入技术在30%硼砂电解液中在Q235低碳钢表面进行硼碳共渗(PEB/C)快速硬化处理,研究与ZrO2、Si3N4组成两种摩擦副及5 N、10 N、15 N 3种载荷条件下PEB/C渗层的摩擦磨损特性。结果表明,PEB/C处理可以明显降低Q235钢基体在干摩擦条件下摩擦系数和磨损率。当与ZrO2球对摩,载荷为5 N时,PEB/C渗层的摩擦系数只有0.15,磨损率减少为9.10“10-7mm3/N#m,摩擦系数和磨损率分别是Q235钢基体的1/4和1/19。载荷增加时,PEB/C渗层的磨损率也随之增加,但它与Si3N4对摩的磨损率要比ZrO2对摩高。在不同载荷下,PEB/C渗层与ZrO2和Si3N4对摩的磨损机制主要为粘着磨损。PEB/C渗层耐磨性较高的原因是Q235低碳钢表面形成了硬度高达1800 HV的Fe2B渗硼层。
The rapid hardening process of PEB / C on Q235 low carbon steel was studied by the liquid phase plasma electrolytic permeation technique in the presence of 30% borax electrolyte. The effects of ZrO2, Si3N4 friction pair and 5 N, 10 Friction and Wear Behavior of PEB / C Layers at N, 15 N Loadings. The results show that PEB / C treatment can significantly reduce the friction coefficient and wear rate of Q235 steel under dry friction conditions. When the friction coefficient is 5 N, the friction coefficient of PEB / C layer is only 0.15 and the wear rate is reduced to 9.10 ”10-7mm3 / N # m. The friction coefficient and wear rate are respectively 1/4 and 1/19, respectively.When the load increases, the wear rate of PEB / C layer also increases, but the abrasion rate of PEB / C layer is higher than that of ZrO2.When the load is different, PEB / C seepage The main wear mechanism of ZrO_2 and Si_3N_4 is frictional wear.The reason for the higher wear resistance of the PEB / C diffusion layer is that the surface of the Q235 mild steel has a hardness of 1800 HV.