Properties of Composite Ceramic Coatings on Ti-6Al-4V Alloy by Surface Nanocrystallization/Micro-Arc Oxidation
Nanostructured surface layer was produced on Ti-6Al-4V alloy by surface mechanical attrition treatment (SMAT) technique,and the composite ceramic coatings of surface nanocrystallization/micro-arc oxidation (SNC/MAO) were prepared on the nanocrystallized surface of Ti-6Al-4V alloy by pulsed single-polar micro-arc oxidation in NaA1O2 solution.XRD,SEM and TEM techniques were used to investigate the phase and surface morphology of ceramic coatings and the influences on the surface state of the alloys.Meantime,the mechanical properties of Ti alloys were measured by tensile test.The results show that after the SMAT treatment for a short period of time,the surface layer was refined into ultraflne grains.The influences of the SMAT technique on the surface morphology of the ceramic coatings were also studied.The ceramic coatings are mainly composed of A12TiO5,more compact and less porous than those untreated.The mechanical properties of Ti-6A1-4V alloy by SMAT technique are improved,compared with those untreated by SMAT technique.
Surface mechanical attrition treatment micro-arc oxidation Ti-6Al-4V
Hao Guodong Guo Yongliang Liu Gang Zhang Xin mei
Deptartment of Chemistry ,Mudanjiang Normal Colleges, Mudanjiang 157012, PRC Material school, Harbin Institute of Technology,Harbin 150001, PRC Institute of Metal Research,The Chinese Academy of Science, Shenyang 110016, PRC
国际会议
The Sixth China International Conference on High-Performance Ceramics(第六届中国先进陶瓷国际研讨会(CICC-6))
哈尔滨
英文
67-69
2009-08-16（万方平台首次上网日期，不代表论文的发表时间）