Thick plate-shaped Al2O3/ZrO2 composites with continuous gradient processed by electrophoretic deposition

被引：22

作者：

Vleugels, J ^{[1
]}

Anné, G ^{[1
]}

Put, S ^{[1
]}

Van Der Biest, O ^{[1
]}

机构：

[1] Katholieke Univ Leuven, Dept Met & Mat Engn, B-3001 Heverlee, Belgium

来源：

FUNCTIONALLY GRADED MATERIALS VII | 2003年 / 423-4卷

关键词：

Al2O3/ZrO2; composites; electrophoretic deposition (EPD); sintering; residual stress;

D O I：

10.4028/www.scientific.net/MSF.423-425.171

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper concerns the processing of free standing objects with a gradient composition. The possibility to shape 5 mm thick ZrO2-Al2O3 FGM discs by means of electrophoretic deposition (EPD) from suitable stable suspensions was explored. The EPD processing parameters and sintering schedules are described, and the densified FGM composites are evaluated. A mathematical model was established for the EPD process, allowing to calculate the composition gradient in plate-shaped FGM materials from the starting composition of the suspensions, the EPD operating parameters and the powder specific EPD characteristics. The model was essential to engineer the gradient profiles in the green deposits. Defect free Al2O3/ZrO2 FGM discs with a diameter of 55 mm, and a thickness of 5 mm could be successfully processed.

引用

页码：171 / 176

页数：6

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