摘要
为了提高农业机械入土部件表面性能,采用氮弧熔覆技术在45钢表面反应合成了TiN/Fe金属陶瓷复合涂层。利用扫描电镜、XRD射线衍射仪、显微硬度计、摩擦磨损试验机、电化学工作站分析了涂层形貌、涂层物相、涂层显微硬度及其耐磨耐蚀性能。结果表明:涂层主要由TiN、Fe组成,TiN呈颗粒状,涂层为良好的冶金结合;与45钢相比,涂层硬度提高了约3倍;磨损量降低了约1/2;在3.5%NaCl溶液和5%H2SO4溶液中,45钢的腐蚀速率分别约为TiN涂层的3倍和2倍,TiN涂层具有较好的耐磨耐蚀性能。
In order to improve surface properties of agricultural machinery penetrating parts, TiN/Fe composite coating was prepared on 45 steel specimen surface by reaction nitrogen-arc cladding technique. The morphology, phase, microhardness, wearability and corrosion behavior of the TiN/Fe coating were analyzed by scanning electronic microscope, X-ray diffractometer, microhardness tester,abrasion machine and electrochemical workstation. Contrast test of mi- crohardness, wearability and corrosion behavior had been done between 45 steel and TiN coat- ing. The results show that the coating is composed of TiN and Fe. TiN is granular shape,and the coating is good metallurgical bonding. Compared with the 45 steel, the microhardness of the coating is improved by about 3 times and the wear loss is about 1/2 times of the 45 steel. The corrosion rate of TiN coating is 1/3 times of the 45 steel in 3.5 % NaCl solution and about 1/2 times of the 45 steel in 5% H2SO4 solution. Therefore, the wearability and corrosion re- sistance of TiN coating is better.
作者
马璐萍
张旭
赵建国
李建昌
郝建军
马跃进
MA Lu-ping ZHANG Xu ZHAO Jian-guo Li Jian-chang HAO Jian-jun MA Yue-jin(College of Mechanical and Electric Engineer, Agriculture University of Hebei, Baoding 071001, China)
出处
《河北农业大学学报》
CAS
CSCD
北大核心
2017年第2期102-105,110,共5页
Journal of Hebei Agricultural University
基金
河北农业大学理工基金(LG20140102)
河北省自然科学基金项目(E2014204028)
河北省高等学校科学技术研究项目(QN2014100)
关键词
反应氮弧熔覆技术
TiN/Fe涂层
耐腐蚀性
耐磨性
reaction nitrogen-arc cladding technique
TiN/Fe coating
corrosion resistance
wear resistance
