Q235低碳钢等离子体电解硼碳共渗处理及性能分析  

Plasma Electrolytic Borocarburizing Treatment on Q235 Low-carbon Steel and Its Properties

作　　者：王彬[1,2] 薛文斌[1,2] 金小越[1,2] 吴杰[1,2] 华铭[1,2] 吴正龙[3] 

机构地区：[1]北京师范大学核科学与技术学院射线束技术与材料改性教育部重点实验室,北京100875 [2]北京市辐射中心,北京100875 [3]北京师范大学分析测试中心,北京100875

出　　处：《材料工程》2014年第6期28-34,39,共8页Journal of Materials Engineering

基　　金：国家自然科学基金项目(51071031);北京市自然科学基金项目(2122017);高等学校博士学科点专项科研基金(20120003110010);中央高校基本科研业务费专项资金项目(211105562GK)

摘　　要：采用液相等离子体电解渗方法对Q235低碳钢进行硼碳共渗(PEB/C)处理,研究了Q235低碳钢表面硼碳共渗层的形貌、结构和显微硬度。评估了PEB/C处理前后Q235钢的电化学腐蚀性能,以及以GCr15钢球作为摩擦副在不同载荷条件下PEB/C渗层的摩擦磨损特性。结果表明,经过PEB/C处理后(330V/30min),形成厚度约为20μm并主要由Fe2B相组成的渗硼层。PEB/C处理轻微提高了Q235钢的耐腐蚀性能,但明显降低了Q235低碳钢与GCr15钢球对磨的摩擦因数和磨损率。当载荷为5N时,PEB/C样品的摩擦因数和磨损率分别是Q235钢基体的1/4和1/59。Q235 low carbon steel was treated by plasma electrolytic borocarburizing（PEB/C）with the method of plasma electrolytic saturation.The morphology,structure and microhardness of borocarburizing layer on Q235 low-carbon steel were investigated.The electrochemical corrosion properties of Q235 steel before and after the PEB/C treatment were evaluated,and the tribological behavior of plasma electrolytic borocarburized Q235 low-carbon steel against GCr15 bear steel ball under different load was analyzed.The results show that the Q235 low-carbon steel forms a boride layer about 20μm thick after 330V and 30min PEB/C treatment.The boride layer mainly consists of Fe2B phase.The PEB/C treatment slightly improves the corrosion resistance of Q235 steel and significantly reduces the friction coefficient and wear rate of the Q235 steel against GCr15 steel ball.The friction coefficient and wear rate of PEB/C sample with a 5 N load are only 1/4 and 1/59 of that of the bare Q235 steel,respectively.

关 键 词：等离子体电解渗 硼碳共渗 腐蚀 摩擦磨损 

分 类 号：TG156.8[金属学及工艺—热处理]