离子氮碳氧三元共渗对45钢耐蚀耐磨性能的影响与机理研究  

Effect of plasma oxynitrocarburising on corrosion and wear resistance for 45 steel and mechanism analysis

作　　者：胡静[1,2,3] 梁硕 卢阳阳 王海强 陈立立 安旭龙 魏伟 HU Jing;LIANG Shuo;LU Yangyang;WANG Haiqiang;CHEN Lili;AN Xulong;WEI Wei(Jiangsu Key Laboratory of Materials Surface Science and Technology,Changzhou University,Changzhou 213164,China;Huaide College,Changzhou University,Jingjiang 214500,China;National Experimental Demonstration Center for Materials Science and Engineering,Changzhou University,Changzhou 213164,China;Shandong Yuneng Machinery Co.,Ltd.,Zaozhuang 277000,China)

机构地区：[1]江苏省材料表面科学与技术重点实验室(常州大学),江苏常州213164 [2]常州大学怀德学院,江苏靖江214500 [3]材料科学与工程国家级实验教学示范中心(常州大学),江苏常州213164 [4]山东宇能机械股份有限公司,山东枣庄277000

出　　处：《常州大学学报（自然科学版）》2024年第3期1-9,共9页Journal of Changzhou University：Natural Science Edition

基　　金：国家自然科学基金面上项目(21978025);江苏省第三期优势学科建设资助项目(PAPD-3);江苏高校品牌专业建设工程资助项目(TAPP-2016);枣庄市自主创新及成果转化资助计划(2021GH10)。

摘　　要：研究选择45钢为原材料,分别采用绿色环保离子氮碳氧三元共渗技术(Plasma oxynitrocarburising,PNCO)和传统淬火-抛光-淬火技术(Quench-polish-quench,QPQ)进行表面改性,并利用SEM,XRD,摩擦磨损试验机,浸泡腐蚀实验对比分析2种方法的改性效果,包括截面显微组织、表面形貌、物相、耐磨性和耐蚀性。结果表明,PNCO处理后,获得了与QPQ处理相同的多层次渗层结构,由表层1~2μm氧化膜及次表层化合物层和有效硬化层构成,且PNCO处理后表面氧化膜成纳米结构,化合物层比QPQ更加致密。同时,PNCO处理后,磨损率和腐蚀失重率分别为1.39 mg/(N·m)和0.39%,耐磨耐蚀性均略优于QPQ,为研究绿色高效高性能表面改性技术提供了可行的研究方向。To explore an environmental friendly and efficient surface modification technology,PNCO(Plasma oxynitrocarburising)was developed and compared with QPQ(Quench-polish-quench)technology for 45 steel.The cross-sectional microstructures,phase compositions,wear resistance and corrosion resistance were tested and analyzed by X-ray diffraction(XRD),scanning electron microscopy(SEM),wear tester and immersion corrosion test.The results show that after PNCO treatment,the same multi-layer structure was obtained as those by QPQ treatment,composed of 1—2μm oxide layer on the surface and compound layer on the subsurface and effective hardening layer beneath.Meanwhile,nanostructured oxide film with denser compound layer was formed by PNCO treatment.Furthermore,both wear rate and corrosion weight loss rate are slightly lower than QPQ treatment,with wear rate of 1.39 mg/(N·m)and corrosion weight loss rate of 0.39%by PNCO,thus bringing better wear resistance and corrosion resistance than those by QPQ treatment.The study provides a feasible research area for environmentally efficient surface modification technology with excellent corrosion and wear resistance.

关 键 词：离子氮碳氧三元共渗技术 QPQ技术 氧化膜 耐磨性 耐蚀性 

分 类 号：TG178[金属学及工艺—金属表面处理]