等离子喷涂Al_2O_3-TiO_2涂层过程中的物相转变研究  

Study on Phase Transformation during Plasma Spraying Al_2O_3-TiO_2 Coating Process

作　　者：吴伟钦[1,2] 李强[1] 

机构地区：[1]福州大学材料科学与工程学院,福州350108 [2]福建工程学院环境与设备工程系,福州350108

出　　处：《天津冶金》2011年第2期37-39,55,共4页Tianjin Metallurgy

摘　　要：综述了等离子喷涂Al2O3-TiO2涂层过程中的不同粒度Al2O3粉末及TiO2物相转变,通过不同喂料及涂层的X射线衍射图,分析Al2O3和TiO2不同相态在喷涂过程中的转化机制。研究结果表明,涂层的Al2O3主要以α-Al2O3和γ-Al2O3相组成,TiO2则主要以金红石晶型存在。对等离子喷涂陶瓷涂层过程中的物相转变研究提出展望。The paper summarizes the phase transformation of Al2O3 powder and TiO2 of different sizes during plasma spraying Al2O3-TiO2 coating process and analyzes the transformation mechanism of Al2O3 and TiO2 in different phases by X-ray diffraction pattern of different feeding and coating. Study results show that Al2O3 in coating mainly consists of α- Al2O3 and γ- Al2O3 phases and TiO2 mainly exists in rutile crystal. The paper also gives prospects for study on the phase transformation of plasma spraying ceramic coating process.

关 键 词：等离子喷涂 涂层 AL2O3 TIO2 物相转变 

分 类 号：TG174.442[金属学及工艺—金属表面处理]