摘要
利用超音速等离子喷涂在调质45钢基体上制备了BaTiO3涂层,运用SEM、XRD、XPS等分析手段对所制备的涂层的组织形貌、物相成分及元素价态进行表征及分析;并利用显微硬度仪和纳米压痕仪对涂层的力学性能进行了表征。结果表明,BaTiO3涂层表面为灰白色,涂层光滑平整,孔隙率为0.8%;涂层为典型的层状结构,基体与BaTiO3涂层间的结合为机械结合,平均值为42MPa;纳米压痕仪测量涂层的表面硬度为7.065GPa,弹性模量为103.77GPa,显微硬度达到648.6HV0.1,涂层显示出优良的机械性能;XRD衍射结果显示主要成分为BaTiO3相,衍射峰的晶面指数为(101)、(111)和(200)。通过超音速等离子喷涂制备的涂层可以获得较好的综合性能。
BaTiO3 coating on 45 steel substrate were prepared by high velocity oxy-fuel and plasma spraying, the microstructure morphology and phase composition were analyzed by SEM, XRD and XPS, the microhardness and nanoindentation of the coating were analyzed as well. The results showed that the surface of the coating was black and smooth, characteristics of porosity was 0.8%; the coatings were of typical layer structure, BaTiO3 had mechanical bonding with the substrate, the average value was 42MPa; the nanoindentation equipment showed that test the coating surface hardness was 7. 065GPa, elastic modulus was 103.77GPa, micro hardness reached 648.6HV0. 1, therefore the coating showed the fine mechanical property; the result of the XRD inflection showed the main phase was BaTiO3, there were three main peaks （101）, （111）, （200）. Through the high ve- locity oxy-fuel and plasma spraying, coating can obtain a good comprehensive performance.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2013年第5期731-735,共5页
Journal of Functional Materials
基金
国家杰出青年科学基金资助项目(51125023)
国家重点基础研究发展计划(973计划)资助项目(2011CB013405)
北京市自然科学基金重大资助项目(3120001)
