Application of alginate gelation to aqueous tape casting technology

被引：32

作者：

Santacruz, I ^{[1
]}

Gutiérrez, CA ^{[1
]}

Nieto, MI ^{[1
]}

Moreno, R ^{[1
]}

机构：

[1] CSIC, Inst Ceram & Vidrio, CSIC, Madrid 28500, Spain

来源：

MATERIALS RESEARCH BULLETIN | 2002年 / 37卷 / 04期

关键词：

ceramics; oxides; thin films; structural materials;

D O I：

10.1016/S0025-5408(02)00686-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This work deals with a novel forming process for manufacturing ceramic tapes in an aqueous medium, that combines tape casting and gel-casting technologies. Aqueous tape casting suspensions of Al2O3 are prepared to a solid loading of 57 vol.% (84 wt.%) by adding 15 wt.% of a binder system consisting of acrylic emulsions and a small concentration (less than or equal to0.5 wt.%) of alginate. The as-cast tape is immersed in a CaCl2 solution and the alginate undergoes gelation. This allows releasing of the tape from the carrier film so that no sticking occurs and crack formation is avoided. Sintered densities are similar to97% of theoretical, similar to those obtained by conventional aqueous tape casting. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：671 / 682

页数：12

共 15 条

[1] Drying kinetics of water-based ceramic suspensions for tape casting [J].