摘要
将纳米/亚微米级Zr_(0.92)Y_(0.08)O_(1.96)(YSZ)增韧稀土复合氧化物LaTi_(2)Al_(9)O_(19)(LTA)颗粒通过喷雾干燥制备出喷涂粉体,采用不同温度对其进行煅烧,并研究不同温度的热处理对喷雾干燥粉体的流动性、松装密度和形貌的影响。结果表明:未经热处理的喷雾干燥粉体呈现出疏松结构,粒径为40~80μm。经过热处理后,LTA-YSZ颗粒之间的结合更加紧密,在1100℃下煅烧的粉体具有最好的喷雾特性和形貌。通过等离子喷涂进行沉积制备的LTA-YSZ涂层呈现良好的层状结构,并伴有缺陷。
The nano/submicron scaled spraying powders of lanthanum titanium aluminum oxide LaTi_(2)Al_(9)O_(19)(LTA)toughened by yttria stabilized zirconia Zr_(0.92)Y_(0.08)O_(1.96)(YSZ)were prepared via spray drying and then calcined at different temperatures.The effect of heat treatment on the flowability,apparent density,and morphology of the spray-dried powders was investigated.Results show that the spray-dried powders have loose structure with the size of 40~80μm.The cohesion between LTA-YSZ particles becomes stronger after calcination.The spray-dried powders calcined at 1100℃ achieve the optimal spraying characteristics and morphology,and therefore are deposited via air plasma spraying(APS)to obtain LTA-YSZ coatings which show a good lamellar structure with defects.
作者
杨泽生
宗鹏安
黄慕章
韩毅
周华建
冯英杰
张鹏
万春磊
Yang Zesheng;Zong Pengan;Huang Muzhang;Han Yi;Zhou Huajian;Feng Yingjie;Zhang Peng;Wan Chunlei(State Key Laboratory of New Ceramics and Fine Processing,Tsinghua University,Beijing 100084,China;College of Materials Science and Engineering,Nanjing Tech University,Nanjing 211816,China)
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2022年第5期1601-1605,共5页
Rare Metal Materials and Engineering
基金
National Natural Science Foundation of China(51590893,51902172)
China Postdoctoral Science Foundation(2019M650670)。
