Influence of the mode of roasting on structure and property of high-porous ceramic mullite materials

Buchilin N.V., Lyulyukina G.Yu., Varrik N.M.
UDC
666.77
DOI
10.18577/2307-6046-2017-0-5-4-4
Article PDF (Russian) (913.65 KB)
How to cite
Buchilin N.V., Lyulyukina G.Yu., Varrik N.M. Influence of the mode of roasting on structure and property of high-porous ceramic mullite materials // Proceedings of VIAM. 2017. No. 5. DOI: 10.18577/2307-6046-2017-0-5-4-4. URL: https://test.viam.ru/en/journal/2017/5/4
Abstract

Creation of high-temperature high-porous ceramic materials is one of actual problems now. The oxide porous ceramics has low heat conductivity, high resistance to oxidation and satisfactory durability therefore it is especially demanded in the metallurgical foundry fields of the industry as foam ceramic filters. The results of researches of sintering mullite porous ceramics with use of discrete mullite fibers are presented in this article. It is shown that the optimum range of temperatures of calcining for producing materials with open cellular porous structure is 1300–1350°C. It is determined that the essential role on mechanical characteristics of materials is rendered by the mode of preliminary heat treatment of fibers, and also composition of the sintering aid. Materials with the reported porosity to 85% and durability are produced at compression to 0,7 MPa.

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