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

被引：9

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

页码：31579 / 31586

页数：8

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