Influence of different parameters on calcium hexaluminate reaction sintering by Spark Plasma

被引：46

作者：

De La Iglesia, P. G. ^{[1
]}

Garcia-Moreno, O. ^{[1
]}

Torrecillas, R. ^{[1
]}

Menendez, J. L. ^{[1
]}

机构：

[1] Univ Oviedo, CINN, Natl Res Council, Llanera 33428, Spain

来源：

CERAMICS INTERNATIONAL | 2012年 / 38卷 / 07期

关键词：

Calcium dialuminate (CA(2)); Calcium hexaluminate (CA(6)); SPS; Reaction sintering; PRECURSORS; CERAMICS;

D O I：

10.1016/j.ceramint.2012.03.038

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Calcium hexaluminate (CaAl12O19) is the most alumina-rich intermediate compound of the CaO-Al2O3 system. The formation of this aluminate is produced by the reaction between calcium oxide and alumina. Intermediate compounds with lower alumina content (CaAl2O4, CaAl4O7,. . .) are formed during the synthesis of calcium hexaluminate with increasing temperature. With the aim to obtain dense and pure calcium hexaluminate by reaction sintering method using Spark Plasma Sintering (SPS) the variation of sintering parameters was studied. Final densities close to the theoretical and calcium hexaluminate formation rates over 93% were achieved by this method. Once the sintering parameters were optimized, a study of the flexural strength and the hardness of the samples were performed. Published by Elsevier Ltd and Techna Group S.r.l.

引用

页码：5325 / 5332

页数：8

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