二氧化钛等离子喷涂层的结构及性能  

The Structure and Performance of Plasma Sprayed TiO_2 Coating

作　　者：范艳华[1] 尹衍升 

机构地区：[1]中国海洋大学材料科学与工程研究院,青岛266003

出　　处：《硅酸盐通报》2006年第5期6-9,共4页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金(NO.50242008).

摘　　要：700℃、1000℃、1200℃下对纳米二氧化钛(TiO_2)粉末进行煅烧,利用大气等离子喷涂(APS)在Q235基体上制备氧化钛纳米结构涂层。运用X射线衍射(XRD)、扫描电镜(SEM)等技术对煅烧后的粉料和涂层的显微结构、物相组成进行测试、观察、分析。实验结果表明1000℃为最佳的造粒温度,适合等离子喷涂的粉末颗粒粒径为30～90μm,流动性较好,着粉率高;涂层物相主要是金红石型TiO_2,涂层与基体的结合强度很高,达30.90MPa,涂层硬度为727.95HV。Nano-TiO2 powders were calcined at 700℃, 1000℃, 1200℃ respectively. TiO2 coatings on carbon steel substrate were fabricated by air plasma spraying. The micro-structure and composition in calcined TiO2 powders and TiO2 coatings were investigated through XRD and SEM. The results show that radius of the best TiO2 particles which were used in air plasma spraying are 30-90μm, and the particles have better mobility and better landed powder ratio. The main phase of coating is Rutile-TiO2, and adhesion strength between coating and substrate is very good, up to 30.90MPa, hardness of coatings is 727.95HV.

关 键 词：纳米二氧化钛 造粒 大气等离子喷涂 结合强度 

分 类 号：TQ134.11[化学工程—无机化工]