Properties of highly refractory corundum ceramics containing glass phase, and their influence on the surface roughness after mechanical treatment.

Autor: Degtyareva, É., Skorodumova, E., Kabakova, I., Barannik, Yu.
Zdroj: Refractories; 1985, Vol. 26 Issue 1/2, p61-66, 6p
Abstrakt: We studied the strength and grain sizes of corundum ceramic containing glass phase and their relationships with the surface roughness during grinding and polishing. It is shown that the amount of glass phase formed in the corundum ceramic, regardless of the type of silica-containing additive, is determined by the concentration of silica in it. An increase in the amount of glass phase in the corundum ceramic reduces the size of its crystals, which in turn increases the strength and impact strength. The increase in the strength of the ceramic increases the roughness of the surface after the first polishing and reduces it after the final (clean) polishing. The presence of glass and the reduction in the crystal sizes of corundum in the ranges studied increase the purity of the surface of these ceramics after the final polishing. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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