Influence of Ceramic Bond on the Physico-Mechanical Properties of Carborundum Refractories

The densification degree, the mechanical strengths, the nature and ratio of ceramic bond are factors which characterize the quality of silicon-carbide refractories resistant to metallic and slag melts. In most cases for the products with 85-90% silicon-carbide, the knowledge of only one property mak...

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Bibliographic Details
Published in:Key engineering materials 1997-04, Vol.132-136 (3), p.1802-1805
Main Authors: Ciocea, N.C., Bertalan, V., Mihalache, Floarea, Barbaresso, C-tin R.
Format: Article
Language:English
Subjects:
Applied sciences
Building materials. Ceramics. Glasses
Chemical industry and chemicals
Exact sciences and technology
Refractory products
Special refractories
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Summary:The densification degree, the mechanical strengths, the nature and ratio of ceramic bond are factors which characterize the quality of silicon-carbide refractories resistant to metallic and slag melts. In most cases for the products with 85-90% silicon-carbide, the knowledge of only one property makes possible a general appreciation of their quality. Silicon-carbide mixes, which after firing have an apparent density of < 2.45 g/cm exp 3 approximately will also have an expansion, respectively the higher porosity, the lower density. Their mechanical strength is lower and the tendency to oxidation-slagging is increased. The presence as impurity of soda feldspar in the bond mix is more harmful than that of potash feldspar. But, ZrO sub 2 produces a dense silicon-carbide refractory which is resistant to its copper and slag melts.
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/www.scientific.net/KEM.132-136.1802