不同喷涂工艺对Cr3+掺杂Al2O3陶瓷涂层相结构及发光性能影响研究  

Study on the Luminous Properties and Phase Structure of Cr3+ Doped Al2O3 Ceramic Coatings Deposited by Different Spray Process

作　　者：酉琪 姜嫄嫄 彭浩然 张鑫 魏少红 纪全 梁天骄 Qi You;Yuanyuan Jiang;Haoran Peng;Xin Zhang;Shaohong Wei;Quan Ji;Tianjiao Liang(BGRIMM Technology Group,Beijing,100160;Aecc South Industry Company Co.,LTD,Zhuzhou,412002;Dongguan Institute of Neutron Science,Dongguan 523808)

机构地区：[1]北京矿冶科技集团有限公司,北京100160 [2]中国航发南方工业有限公司,株洲412002 [3]东莞中子科学中心,东莞523808

出　　处：《热喷涂技术》2019年第2期43-48,共6页Thermal Spray Technology

基　　金：国家重点研发计划(2017YFB0306100)项目

摘　　要：通过火焰喷涂工艺和等离子喷涂工艺制备了Cr^3+掺杂Al2O3陶瓷涂层。采用扫描电镜、X射线衍射、荧光光谱仪等方法表征了涂层的微观形貌、孔隙率、相结构及发光性能等。对比两种不同工艺制备的Cr^3+掺杂Al2O3陶瓷涂层性能结果表明:等离子喷涂制备的涂层形貌、颗粒熔化状态、厚度均一性均优于火焰喷涂涂层,但火焰喷涂工艺涂层的发光性能远优于等离子工艺涂层,其原因是火焰喷涂制备的涂层中Al2O3粒子的熔融状态更差,保留了更多的α-Al2O3相,未熔粒子部分将以喷涂原粉中稳定的α-Al2O3结构存在涂层中进而影响其光学性能。Cr^3+ doped Al2O3 ceramic coatings were deposited by flame spraying and plasma spraying. Scanning electron microscopy, X-ray diffraction and fluorescence spectrometry were employed to characterize the microstructure, porosity, phase structure and luminescence properties of the coatings. The comparison of Cr^3+ doped Al2O3 ceramic coatings prepared by two different process shows that the coating morphology, particle melting state and thickness uniformity prepared by plasma spraying are all superior to those of flame spray coating, but the optical properties of the flame spray coating are much better than the plasma spraycoating.The reason may be the Al2O3 particles in the flame sprayed coating are not fully melted and retained more α-Al2O3 phase.The unmelted particles in the coating still remain the stable α-Al2O3 structure as it was in original powder and thus affects the optical properties.

关 键 词：Cr^3+掺杂 AL2O3涂层 火焰喷涂 等离子喷涂 发光 

分 类 号：TG174.4[金属学及工艺—金属表面处理]