Microstructural evolution in self-forming spinel/calcium aluminate-bonded castable refractories

被引：153

作者：

Fuhrer, M ^{[1
]}

Hey, A ^{[1
]}

Lee, WE ^{[1
]}

机构：

[1] Univ Sheffield, Dept Mat Engn, Sheffield S10 2TN, S Yorkshire, England

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 1998年 / 18卷 / 07期

关键词：

D O I：

10.1016/S0955-2219(97)00182-9

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 [材料科学与工程]; 080502 [材料学];

摘要：

Calcium aluminate bonded alumina-spinel castable refractories have been fabricated with in-situ spinel formation. Spinel formation occurs between 1200 and 1400 degrees C with a Met-like morphology interlinked with CaO-MgO-Al2O3-SiO2 phases. Spinel generated at 1400 degrees C is nearly stoichiometric but at higher temperatures it progessively enriches in Al2O3. The calcium aluminate phases in the cement bond react to form platey CA(6) crystals between 1200 and 1400 degrees C which coexist with the spinel and penetrate and bond to tabular alumina grains. The potential effect of these morphologies on properties is discussed. (C) 1998 Elsevier Science Limited. All rights reserved.

引用

页码：813 / 820

页数：8

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