分散剂在Al_2O_3陶瓷原位凝固成型中的应用APPLICATION OF DISPERSANT ON IN-SITU GELCASTING CONSOLIDATION OF ALUMINA CERAMICS
吴彤;叶建东;
摘要(Abstract):
陶瓷凝胶注模成型工艺是一种新颖的成型工艺,它将高分子化学单体聚合的思路引入到陶瓷的成型工艺中。通过加入分散剂制备了流动性较好的Al2O3浆料,用改性淀粉原位凝胶注模成型技术制备了具有较高强度和均匀性良好的氧化铝陶瓷坯体。研究了不同分散剂在制备低粘度高固相体积分数Al2O3浓悬浮体中的分散作用,并重点考察了添加不同分散剂的Al2O3浆料的粘度随pH值变化的趋势,对比了不同分散剂对Al2O3浆料的分散效果。
关键词(KeyWords): 原位凝固成型;氧化铝;分散剂
基金项目(Foundation): 国防科技预研基金项目,编号:51412020203JW1608
作者(Authors): 吴彤;叶建东;
DOI: 10.16521/j.cnki.issn.1001-9642.2007.03.010
参考文献(References):
- [1]Janey.M.A,Knoxville,Tenn.Method for moulding ceramic powders.Us Patent 4894194,1990,1,16
- [2]M.A.Janney,O.O.Omatete.Method for molding ceramic powders using a water-based gelcasting.U.S.Pat.No.5,028,362,July 2,1991
- [3]O.O.Omatete,M.A.Janney,R.A.Strehlow.Gelcasting—A new ceramic forming process.Am.Ceram.Soc.Bull.,70[10]1641-1649(1991)
- [4]郭景坤.关于先进结构陶瓷的研究.无机材料学报,1999,14(2):194-202
- [5]Mstsunuma.Kenji,Yamamoto.Takehisa,Yamakawa.Akira.et al.Development of high strength Si3N4 sintered body for the valve systems of automotive engines.SAE Technical Paper Series,1992,920384:1-9
- [6]R.J.Pugh,L.Bergstrom.Surface and colloid chemistry in advanced ceramic processing.Surfactant science series,Marcel Dekker,New York,1994,51:105-107
- [7]P.F.Luckham,A.M.Ansarifar,B.A.De L.Costello.The relationship between interparticle forces and the bulk rheology of suspensions.Powder Techn,1991,65:371-379
- [8]R.G.Horn.Surface forces and their action in ceramic materials.J Am Ceram Soc,1990,73(5):1117-1135
- [9]多孔陶瓷抗弯强度试验方法,中华人民共和国国家标准,GB1965-80
- [10]陈克复等编译.食品流变学及其测量.北京:轻工业出版社,1989:251-258
- [11]L.M.Sheppard.The changing demand of ceramic additives.Cer Bull,1990,69(5):802-806
- [12]R.Moreno.The role of slip additives in tape-casting technology:part I-solvents and dispersants.Am Ceram Soc Bull,1992,71(10):152-153
- [13]J.Cesarano III,I.A.Aksay,A.Bleier.Stability of aqueous Al2O3 suspensions with poly(methacrylic acid)polyelectrolyte.J Am Ceram Soc,1988,71(40);250-255
- [14]刘阳桥,高濂.亚微米Al2O3浆料的流变性优化研究.无机材料学报,2003,18(6):1199-1204
- [15]谢灼利,孙宏伟,郑冲.α-Al2O3稳定浆料的研究.无机材料学报,1998,13(6):818-822
- [16]Huang.Y,Dai.JQ,Xie.ZP.Effects of liquid medium and ball-milling on the surface group and aqueous dispersibility of Si3N4 powder.J Eur Ceram Soc,2003,23(6):985-990
- [17]杨金龙,黄勇,斯文捷,谢志鹏,张云龙等.直接凝固注模成型工艺的研究.硅酸盐学报,1997,27(5):514-518
- [18]杨金龙,谢志鹏,汤强,黄勇等.α-Al2O3悬浮体的流变性及凝胶注模成型工艺的研究.硅酸盐学报,1998,26(1):41-46