Role of nano-ZrO2 powder in in-situ formation of ceramic whiskers in Al2O3-C slide plate materials

被引：11
作者：
Tian, Xuekun [1 ]
Liu, Zhifang [1 ]
Ouyang, Deze [1 ]
Su, Kai [1 ]
Wang, Hongsen [1 ]
Jia, Quanli [1 ]
Zhao, Fei [1 ]
Liu, Xinhong [1 ]
机构：
[1] Zhengzhou Univ, Sch Mat Sci & Engn, Henan Key Lab High Temp Funct Ceram, 75 Daxue Rd, Zhengzhou 450052, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2022年 / 48卷 / 21期
基金：
中国国家自然科学基金;
关键词：
Al 2 O 3-C materials; Nano-ZrO; 2; powder; Phase composition; Microstructure; Ceramic whiskers; THERMOMECHANICAL PROPERTIES; MECHANICAL-PROPERTIES; REFRACTORIES; MICROSTRUCTURES; SILICON; CARBON; ADDITIVES; GROWTH; PHASES; GATE;
D O I：
10.1016/j.ceramint.2022.07.079
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：
The effects of nano-ZrO2 powder on the evolution of phase composition and microstructure of Al2O3-C materials during firing have been investigated using tabular alumina, Si powder, Al powder, graphite and nano-ZrO2 powder as starting materials. The residual content of Al and Si gradually decreased with increasing temperature, and the added nano-ZrO2 facilitates the reactions involving Si and Al. The quantity of in-situ synthesized AlN and SiC whiskers exhibiting continuous interlocking networks increased gradually with temperature. Nano-ZrO2 facilitates more ceramic whiskers generated in samples, which play a strengthening and toughening role in the materials, thus improving the thermal shock resistance and high temperature strength of Al2O3-C materials. In addition, physical properties are improved due to the nano-ZrO2 filling the pores and increasing the density of materials.
引用
收藏
页码：31579 / 31586
页数：8
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