| 摘要 |
PURPOSE:To obtain crystallized glass having high strength and suitable as a building material, ornament, etc., by using fine glass powder having low softening point in combination with coarse glass powder having high softening point and selecting the average composition of both components in a manner to facilitate the formation of a wollastonite crystal. CONSTITUTION:The objective crystallized glass contains a large amount of wollastonite crystals precipitated in the mixed component region at the boundary formed by the fusion of adjacent glass particles (1,2) having different compositions (2a is aggregated particle of fine particles). The crystallized glass can be produced as follows. Among the above glass components wherein the average composition of the glass components having different compositions becomes a composition to facilitate the formation of wollastonite crystal, the glass having low softening point is pulverized to fine powder and the glass having high softening point is crushed to powder coarser than the above fine powder. The mixture of both components is compression-molded, sintered and crystallized by heat-treatment.
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