Phase compositions and equilibria in the CaO-Al2O3-Fe2O3-SO3 system, for assemblages containing ye'elimite and ferrite Ca2(Al,Fe)O5
Phase compositions and equilibria in the CaO-Al2O3-Fe2O3-SO3 system, for assemblages containing ye'elimite and ferrite Ca2(Al,Fe)O5
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DOI：
10.1016/j.cemconres.2013.08.005
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发表时间：
2013-12-01
影响因子：
11.4
通讯作者：
Glasser, Frederic P.
中科院分区：
文献类型：
--
作者：
Touzo, Bruno;Scrivener, Karen L.;Glasser, Frederic P.
研究了CaO-Al2O3-Fe2O3-SO3体系中的相平衡，主要是在1325℃下。特别是对叶极限Ca-4(Al6O12)SO4和褐针石(C-2(A,F))相的固溶体成分进行了分析，并用于估计这些相在1325℃下与液体共存时的成分边界。硫酸盐和氧化铁促进了形成液相，其量随着 Fe2O3 总含量的增加而增加。然而，硫酸盐在该液相中的溶解度非常低，并且液体形成往往会导致未密封样品中硫酸盐的挥发。 (C) 2013 Elsevier Ltd. 保留所有权利。
Phase equilibria in the CaO-Al2O3-Fe2O3-SO3 system have been studied, mainly at 1325 degrees C. In particular the solid solution compositions of ye'elimite Ca-4(Al6O12)SO4 and brownmillerite (C-2(A,F)) phases have been analysed and used to estimate the composition boundaries of these phases in their co-existence with liquid at 1325 degrees C. Sulfate and iron oxide facilitate the formation of a liquid phase, whose amount increases with overall Fe2O3 content. However, the solubility of sulfate in this liquid phase is very low and liquid formation tends to lead to the volatilisation of sulfate in unsealed samples. (C) 2013 Elsevier Ltd. All rights reserved.