| 摘要 |
PROBLEM TO BE SOLVED: To provide a colored crystallized glass article suitable for building materials which is made by using one kind of crystalline glass material, does not have white spot patterns of crystallized particles and achieves a uniform color tone deeper than that of usual articles by using the same amount of a coloring agent as usual, and a method for manufacturing the same. SOLUTION: The colored crystallized glass article 10 is composed of a plurality of glass small regions S fused mutually in which acicular crystals N deposit from the interface K between glass small regions toward the inside and 0.01-3 mass% of a coloring agent consisting of a colored metal oxide from the interface K toward the inside is contained, and has a visible light average transmittance in thickness of 1 mm of 15% or more. The manufacturing method is that crystalline glass small bodies having an average transmittance in thickness of 1 mm of 35% or more after carrying out fusion unification and crystal deposition are mixed with 0.01-3 mass% of a coloring agent of the metal oxide and accumulated in a refractory container, and then heat-treated at a temperature higher than the softening point. COPYRIGHT: (C)2010,JPO&INPIT |
