Cr/Al_2O_3涂层制备工艺与发光性能研究  

The Research on Preparation and Luminescent Performance of Cr/Al_2O_3 Coating

作　　者：文波[1] 倪立勇[1] 史英丽 吴朝军[1] 杨杰[1] 魏少红 纪全 

机构地区：[1]航天材料及工艺研究所,北京100076 [2]安泰中科金属材料有限公司,北京100081 [3]东莞中子科学中心,东莞523808

出　　处：《热喷涂技术》2016年第1期51-55,30,共6页Thermal Spray Technology

摘　　要：采用烧结破碎法可制备适用于热喷涂的Cr/Al_2O_3的粉末,分别采用大气等离子喷涂和火焰喷涂制备了Cr/Al_2O_3发光涂层,研究了粉体和不同喷涂方法制备的涂层组织形貌、相结构及发光性能。结果表明:所制备的Cr/Al_2O_3粉末呈现α-Al_2O_3的单相结构;火焰喷涂涂层呈现粉红色,表面粗糙度Ra 8.8μm和孔隙率21.5%,涂层以α-Al_2O_3相为主;等离子喷涂的涂层呈现灰白色,较低的表面粗糙度Ra 6.1μm和孔隙率8.3%,涂层以γ-Al_2O_3相为主;粉体和两种涂层均可呈现红宝石单晶R线发射,发射峰为693nm和694nm。The Cr/Al_2O_3 powder used in thermal spraying was prepared by sintering and crushing, and the Cr/Al_2O_3 luminescent coating was prepared by atmospheric plasma spraying and flame spraying, respectively. The microstructure, phase structure and luminescence properties of Cr/Al_2O_3 powder and coating prepared by different spraying method were studied. The results indicated that the Cr/Al_2O_3 powder showed the α-Al_2O_3 single-phase structure and the coatings prepared by flame spraying show a pink and show the α-Al_2O_3 main-phase. The surface roughness is Ra 8.8μm and the porosity is 21.5%. The coatings prepared by plasma spraying show gray white and the γ-Al_2O_3 main-phase. The surface roughness is Ra 6.1μm and the porosity is 8.3%; The powder and both of coatings show Ruby Crystals R line emission, and the emission peak are 693 nm and 694 nm.

关 键 词：Cr/Al2O3 火焰喷涂 等离子喷涂 发光性能 

分 类 号：TG174.4[金属学及工艺—金属表面处理]