| Effects of Sintering Temperature on Properties of Green
Porous Mullite Ceramics Fabricated by Insulators Waste |
Shujing Li,a,* Nana Xu,a Binwen Duan,b Yuanbing Lia and Guijuan Lia
pages : 98-101
DOI : 10.1080/0371750X.2016.1175322 |
| Abstract |
| In this research, green porous mullite ceramics with high porosity, high strength and
low thermal conductivity were fabricated by using insulator waste as the main raw
material. The effects of sintering temperature on linear shrinkage rate (LSR), bulk
density, apparent porosity, cold crushing strength (CCS), mean pore diameter and
thermal conductivity of the porous mullite ceramics were investigated. As the sintering
temperature increased from 1300o to 1500oC at intervals of 50oC, the LSR initially
decreased from 1300o to 1400oC, and then increased from 1400o to 1500oC, while CCS
and thermal conductivity increased constantly from 3.2 to 8.5 MPa and from 0.187 to
0.313 W.m–1.K–1 respectively. Meanwhile, the crystallization and morphology of the
mullite grains were optimized with the increasing sintering temperature.
Comprehensive properties of specimens can be adjusted by changing the sintering
temperature. |
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