Preparation of Al2O3 poly-hollow microsphere (PHM) ceramics using Al2O3 PHMs coated with sintering additive via co-precipitation method

被引：21
作者：
Yang, Jin-Long [1 ]
Xu, Xing-Xing [2 ]
Wu, Jia-Min [1 ,3 ]
Wang, Xiu-Hui [2 ]
Su, Zhen-Guo [1 ]
Li, Chen-Hui [3 ]
机构：
[1] Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China
[2] Dalian Jiaotong Univ, Sch Mat Sci & Engn, Dalian 116028, Peoples R China
[3] Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China
来源：
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2015年 / 35卷 / 09期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
Porous Al2O3 ceramics; Sintering additive; Al2O3 poly-hollow microspheres; Mechanical properties; Co-precipitation method; PORE-FORMING AGENT; FOAMS; FABRICATION; SPHERES;
D O I：
10.1016/j.jeurceramsoc.2015.02.027
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：
In this paper, the Al2O3 poly-hollow microspheres (PHM) were used to prepare novel Al2O3 PHM ceramics. In order to improve the mechanical properties of the Al2O3 PRIM ceramics, the Al2O3 PHMs were coated with CaSiO3 sintering additive via co-precipitation method. The effect of CaCl2 solution content on the properties of the Al2O3 PRIM ceramics was investigated. With the increase of the CaCl2 solution content, the porosity of the Al2O3 PRIM ceramics decreases, while the shrinkage, flexural strength and fracture toughness increase. When the CaCl2 solution content is 8 mL, the flexural strength and fracture toughness of the Al2O3 PRIM ceramics are as high as 191.09 MPa and 3.74 MPa.m(1/2), respectively. It is found that coating the Al2O3 PHMs with sintering additive via co-precipitation method could effectively improve the properties of the novel Al2O3 PHM ceramics. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2593 / 2598
页数：6
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