利用机械研磨提高涂层力学性能的研究  

Study on the improvement of coating's mechanical properties by mechanical milling method

作　　者：陈洪亮[1] 王树林[2] 唐宏志[1] 

机构地区：[1]上海理工大学能源与动力工程学院,上海200093 [2]上海理工大学材料科学与工程学院,上海200093

出　　处：《功能材料》2014年第3期37-41,共5页Journal of Functional Materials

基　　金：国家教育部博士点基金资助项目(20113120110005);上海市纳米专项资助项目(1052nm02900)

摘　　要：利用滚压振动磨对喷涂前驱体6%(质量分数)Al2O3-7%(质量分数)YSZ(AYSZ)混合粉体进行了研磨处理,使前驱体发生了机械合金化,形成了Alx Zr1-x O2-0.5x固溶体。然后,利用高温等离子喷涂技术把研磨后的前驱体粉体制备成为AYSZ涂层,同时制备了传统的YSZ涂层。研究表明,AYSZ涂层的晶粒约为60nm,内部裂纹较小,而且没有横向断层。而YSZ涂层的晶粒约为260nm,内部裂纹较宽且较深,并带有明显的横向断层。测试结果表明,AYSZ涂层的孔隙率、弹性模量和硬度等力学性能都高于YSZ涂层。结果对于高性能涂层材料的发展具有参考价值。In this paper,we used 6 wt% Al2 O 3-7 wt% YSZ （AYSZ）to prepare the spraying precursor powder by the roller vibration milling.The resulting precursor became mechanical alloying,and formed Alx Zr1-x O 2-0.5x solid solution.Then,the precursor and 7 wt%YSZ powder were respectively sprayed by the high temperature plasma spraying to form AYSZ and YSZ coatings.The study results show that the grain size of the AYSZ coat-ing was about 60 nm and the AYSZ coating has smaller internal crack without the cross-section,while the grain size of the YSZ coating was about 260 nm and the YSZ coating has wider and deeper internal crack with the ob-vious cross-section.Test results show that the properties of the AYSZ coating,like porosity,and mechanical properties,like elastic modulus and hardness,are higher than the YSZ coating’s.This paper was referential to the development of coating materials with high properties.

关 键 词：振动研磨 等离子喷涂 机械合金化 力学性能 

分 类 号：TQ174[化学工程—陶瓷工业]