摘要
The key technology and the main mechanism of microcrystallizing leucite to reinforce dental glass ceramics were investigated.The feedstock powders were selected,mixed according to the ratios of the theoretical composition of leucite,ball-milled,melted at 1600℃ and then cooled to room temperature quickly.The cooled clinkers were ball-milled again to 4 μm.After cold-isostatic pressure molded and air sintered at 1500℃ for 1 h,the dental glass ceramics were fabricated.They have following characteristics:excellent mechanical properties (mean compressive strength is 206.6 MPa),low sintering temperature and good reoccurrence to keep steady quality.
The key technology and the main mechanism of microcrystallizing leucite to reinforce dental glass ceramics were investigated.The feedstock powders were selected,mixed according to the ratios of the theoretical composition of leucite,ball-milled,melted at 1600℃ and then cooled to room temperature quickly.The cooled clinkers were ball-milled again to 4 μm.After cold-isostatic pressure molded and air sintered at 1500℃ for 1 h,the dental glass ceramics were fabricated.They have following characteristics:excellent mechanical properties (mean compressive strength is 206.6 MPa),low sintering temperature and good reoccurrence to keep steady quality.
