LI Xuemin YU Pingli WU Zuyun

(College of Material Science and Engineering, Huaqiao University,Xiamen Fujian 361021,China)

Abstract: Two kinds of R₂O-CaO-MgO-Al₂O₃-SiO₂ system glass-core precursor were prepared, and powders were produced by mixing glass-core precursor, quartz, cullet and stone powder in different proportions. Crystallization properties of the pure glass-core precursor and mixed powders were studied. Surface diffusion of powders would be incurred by heat treatment, and the influence of the component exchange on the crystallization characteristics of glass-core precursor was investigated. The results showed: low aluminum ceramic body could be strengthened by new crystalline phase from heated powders mixed with glass-core precursor and other components.

Key words: glass-core precursor; inorganic powder; crystallization; strengthening