【摘 要】
：
In this paper,low cost porous mullite ceramics with high porosity,high strength and low thermal conductivity were fabricated by ceramic waste powder and cla
【机 构】
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The State Key Laboratory Breeding Base of Refractories and ceramics,Wuhan university of science and
【出 处】
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The 5th International Congress on Ceramics, ICC5(第五届国际陶瓷大会)
论文部分内容阅读
In this paper,low cost porous mullite ceramics with high porosity,high strength and low thermal conductivity were fabricated by ceramic waste powder and clay as raw material,sawdust as porogen.The relationship of phase composition,physical properties and thermal properties of this porous mullite ceramics were researched by changing sintering temperature and the extra addition of sawdust.The results show that: The complex properties show the best when the sintering temperature is 1400 ℃ and the extra addition of sawdust is 30wt%.Among the best properties,The bulk density is 0.87g/cm3,apparent porosity is 60.7%,cold crushing strength reaches to 5.3Mpa,the thermal conductivity is 0.212W·m-1·K-1.Observed from SEM and EDS graphs,new mullite phrase appeared in the samples and mullite phrase can strengthen the samples.
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