Application of polypropylene carbonate for the tape casting of silicon nitride ceramics

被引:3
|
作者
Dai, Jinrong [1 ]
Hou, Qingjian [2 ]
Duan, Yusen [1 ]
Zhang, Jingxian [1 ]
机构
[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine M, Shanghai, Peoples R China
[2] Nanjing Res Inst Elect Technol, Nanjing, Peoples R China
基金
中国国家自然科学基金;
关键词
QPAC40 (polypropylene carbonate); silicon nitride ceramics; substrate; tape casting; THERMAL-CONDUCTIVITY; OPTIMIZATION; FABRICATION; MICROSTRUCTURE; SUBSTRATE;
D O I
10.1111/ijac.14457
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
QPAC40 (polypropylene carbonate), with a little decomposition residue, is commonly used as a binder in aluminum nitride (AlN) tape casting. In this paper, we tried to explore its application in silicon nitride (Si3N4) tape casting. By studying the influence of dispersant, binder, plasticizer/binder ratio, and solid loading on slurry and green tape properties, the optimum formulation of the tape casting of Si3N4 slurry was determined, and the green tape with a uniform structure and relative density up to 63.16% was prepared. Si3N4 ceramics were obtained by debinding at 600 degrees C for 1 h in vacuum and gas-pressure sintering at 1830 degrees C for 2 h in N-2. The thermal conductivity and flexural strength of Si3N4 ceramics were 56.28 +/- 1.21 W/(m center dot K) and 1130.67 +/- 23.58 MPa, respectively. These results indicated that QPAC40 can be used to prepare Si3N4 sheets through tape casting.
引用
收藏
页码:3385 / 3394
页数:10
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