Effect of yttria on sintering and microstructural behavior of reaction sintered mullite based on bauxite, fly ash and precipitated silica

被引：5
作者：
Dey, Souvik [1 ]
Ray, Debjyoti [1 ]
Mondal, Arabinda [2 ]
Parya, Tapan Kumar [1 ]
机构：
[1] Univ Calcutta, Ceram Engn Div, Dept Chem Technol, 92 Acharya Prafulla Chandra Rd, Kolkata 700009, India
[2] PSV Visva Bharati Univ, Dept Silpa Sadana, Santini Ketan 731236, W Bengal, India
来源：
CERAMICS INTERNATIONAL | 2018年 / 44卷 / 09期
关键词：
Mullite; Y2O3; Yttrious silicate; Microstructure; WEST-BENGAL; CERAMICS; MULLITIZATION; ALUMINA; TRANSFORMATION; DENSIFICATION; KAOLINITE; CRYSTALS; PHASE;
D O I：
10.1016/j.ceramint.2018.02.214
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 present investigation on the effect of Y2O3 towards the sintering behavior of mullite compacts revealed that rapid mullitization occurred through nucleation and normal grain growth due to the formation of yttrious silicate glassy phase. The intergranular voids were progressively eliminated by yttrious silicate glass leading to significant decrease in porosity with the corresponding remarkable rise in mechanical strength of sintered compacts. The uniform dispersion of microfine corundum grains into the mullite matrix with 1.5% Y2O3 content was noticed during sintering at 1550 degrees C and above.
引用
收藏
页码：10087 / 10093
页数：7
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