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5N、10N、15N3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5N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.
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