纳米颗粒粒径对等离子喷涂法制备氧化锆纳米涂层的影响  

Particle Size Effect of Nanosize Powders on Nanostructured Zirconia Coating Fabricated by Air Plasma Spraying

作　　者：梁波[1] 张卫国[2] 

机构地区：[1]燕山大学亚稳材料制备技术与科学国家重点实验室,秦皇岛066004 [2]河北科技师范学院,秦皇岛066009

出　　处：《硅酸盐通报》2009年第3期605-608,623,共5页Bulletin of the Chinese Ceramic Society

基　　金：中法合作先进材料项目(NO.PRAMX02-03)

摘　　要：利用扫描电镜(SEM)、场发射扫描电镜(FESEM)、透射电镜(TEM)、比表面积吸附法(BET)等分析测试技术,研究了3种不同纳米尺寸氧化锆粉粒的造粒性能、沉积效率以及对等离子喷涂涂层晶粒大小、涂层熔融性能、结合强度的影响。结果表明:纳米氧化锆粉体一次颗粒粒径大小显著影响纳米粉体的喷雾造粒性能、沉积效率、涂层表面粗糙度、涂层晶粒粒径和结合强度大小。本试验中,利用颗粒一次粒径范围为50～70nm的纳米氧化锆粉体,等离子喷涂制备了晶粒粒径范围为80～120nm,沉积效率为43%,涂层表面粗糙度为5.92μm,结合强度为27MPa的纳米结构氧化锆涂层。The particle size effect of nanosize powders on nanostructured zirconia coating fabricated by air plasma spraying was studied by means of FESEM, SEM, TEl and BET analysis technologies. The results show that the particle size considerably influences the reconstituted powder＇s properties, deposition efficient, the grain size of as-sprayed coating, the surface roughness and cohesive strength. The nanostructured zirconia coating with the grain size range from 80 to 120 nm was fabricated by using reconstituted powders with the particles size in the range from 50 to 70 nm. The deposition efficient of assprayed coating was 43 %, the average roughness was 5.92μm and the cohesive strength was 27 MPa, respectively.

关 键 词：等离子喷涂 氧化锆 纳米粉体 纳米涂层 粒径 

分 类 号：TG174.442[金属学及工艺—金属表面处理]