Synthesis and characterization of LaPO4-coated α-Al2O3 powders

被引：11
|
作者：
Zheng, Qiuju [1 ]
Wang, Xin [1 ]
Tian, Jintao [1 ]
Liu, Zifeng [1 ]
Huang, Chuanshun [1 ]
Wang, Jing [1 ]
Xu, Jihui [1 ]
机构：
[1] Ocean Univ China, Inst Mat Sci & Engn, Qingdao 266100, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2009年 / 35卷 / 02期
关键词：
Powders: chemical preparatiom; Composite; Chemical properties Heterogeneous nucleation processing; HETEROGENEOUS NUCLEATION; MICROSTRUCTURE; COMPOSITE; MONAZITE; BEHAVIOR; ALUMINA; GROWTH;
D O I：
10.1016/j.ceramint.2008.03.014
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
LaPO4-coated alpha-Al2O3 powders were successfully synthesized through the heterogeneous precipitation method. The coated powders were characterized by XRD, TEM. EDS, and zeta-potential measurements. According to the XRD results, the coated powders consisted of only alpha-Al2O3 and monoclinic LaPO4. The TEM examinations and EDS analysis showed that under alkaline condition a homogeneous coating with thickness of similar to 10 nm was obtained on the alpha-Al2O3 powder surface. The zeta-potential measurements showed the coated powders to have a pH value of 7.85 at isoelectric point, similar to that of LaPO4 (pH value of 8.21). This was in good agreement with the TEM and EDS results, indicating a successful coating process in our experiment. (C) 2008 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码：897 / 900
页数：4
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