基本信息:
- 专利标题： 一种水基造粒并直接冷等静压成型的氮化硅陶瓷的制备方法
- 专利标题（英）：Preparation method of silicon nitride ceramics by water-base granulation and direct cold isostatic press moulding
- 申请号：CN201610422836.X 申请日：2016-06-15
- 公开(公告)号：CN106083068A 公开(公告)日：2016-11-09
- 发明人： 杨晓 , 刘学建 , 王鲁杰 , 姚秀敏 , 黄政仁
- 申请人： 中国科学院上海硅酸盐研究所
- 申请人地址： 上海市长宁区定西路1295号
- 专利权人： 中国科学院上海硅酸盐研究所
- 当前专利权人： 中国科学院上海硅酸盐研究所
- 当前专利权人地址： 上海市长宁区定西路1295号
- 代理机构： 上海瀚桥专利代理事务所
- 代理人： 曹芳玲; 郑优丽
- 主分类号： C04B35/584
- IPC分类号： C04B35/584 ; C04B35/628 ; C04B35/622 ; B28B21/00 ; B28B3/00
The invention relates to a preparation method of silicon nitride ceramics by water-base granulation and direct cold isostatic press moulding. The preparation method comprises the following processes: raw material powder preparation, ball-milling, granulation, moulding and sintering. The preparation method is characterized in that deionized water is used as a solvent in the ball-milling process; and polyacrylic acid and/or ammonium polyacrylate which accounts for 0.5-3 wt% of total amount of the raw material powder are/is added into the solvent in advance. By using deionized water as the solvent, production safety is raised, and production cost is reduced. The prepared silicon nitride ceramic material has a uniform microstructure and good mechanical properties and thermal stability. By direct cold isostatic press moulding, tubular shape, column shape, blank with openings at two ends, blank with an opening at one end or other complex shapes can be formed. Then, high-performance silicon nitride ceramic with high density and high strength can be obtained.
公开/授权文献:
- CN106083068B 一种水基造粒并直接冷等静压成型的氮化硅陶瓷的制备方法 公开/授权日：2021-04-16