Diffusion studies in formation and sintering of CaAl2O4 and BaAl2O4: A comparative evaluation

被引：17

作者：

Ali, MM

Agarwal, SK

Handoo, SK

机构：

[1] Natl. Cncl. Cement and Bldg. Mat., P-21 South Extension II, Ring Road

来源：

CEMENT AND CONCRETE RESEARCH | 1997年 / 27卷 / 07期

关键词：

D O I：

10.1016/S0008-8846(97)00092-6

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Formation of CaAl2O4 in 1:1 molar mix of CaO and Al2O3 occurs at higher temperature through formation of mainly lime rich phases such as C(3)A and C(12)A(7). In BaO-Al2O3 mix, however stoitiometric formation of BaAl2O4 occurs at relatively higher temperature due to larger ionic size of Barium ions. The rate of BaAl2O4 formation is more as the interdiffusion coefficient values calculated for BaO-Al2O3 system were found much higher than in CaO-Al2O3. Sintering studies showed slower rate of densification in BaAl2O4 powder compacts and were due to higher molecular weight of BaAl2O4 though the values of apparent diffusion coefficients calculated were found to be comparable in both the systems. (C) 1997 Elsevier Science Ltd.

引用

页码：979 / 982

页数：4

共 7 条

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[2] SINTERING KINETICS OF BAAL2O4 [J].

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AGARWAL, SK ;

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CEMENT AND CONCRETE RESEARCH, 1995, 25 (06) :1257-1263

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