Effect of Barium on Formation and Metastable Structure of Tricalcium Silicate
Effect of Barium on Formation and Metastable Structure of Tricalcium Silicate
复制标题
钡对硅酸三钙形成及亚稳态结构的影响
DOI：
10.4028/www.scientific.net/msf.743-744.339
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发表时间：
2013-01
期刊：
影响因子：
--
通讯作者：
Jiayuan Ye
中科院分区：
文献类型：
--
作者：
Xuehong Ren;Wensheng Zhang*;Bin Wang;Jiayuan Ye
采用X射线粉末衍射结合Rietveld法、差示扫描量热法和傅里叶变换红外光谱研究了钡对硅酸三钙(C3S)形成、结构和相变的影响。结果表明，较低的钡含量有利于C3S的形成，BaO含量高达1.5%。较高含量的 BaO 抑制 C3S 结晶并导致优先形成硅酸二钙固溶体。 C3S的三种三斜晶型T1、T2和T3是稳定的。晶格参数随钡含量线性变化，但在相变边界处出现不连续性，遵循 Vegards 定律。 T1和T2的晶体结构与T3相似。 T1和T2中SiO44-四面体是扭曲的，而T3中则近似为正四面体。 C3S 的相变受到钡的掺入的影响。人们认为C3S高温多晶型物的稳定性与离子取代引起的晶格畸变有关。
The effect of barium on the formation, structure and phase transition of tricalcium silicate (C3S) has been studied by X-ray powder diffraction combined with Rietveld method, Differential scanning calorimetry and Fourier transform infrared spectroscopy. The results showed that the low contents of barium was favorable the formation of C3S with up to 1.5% BaO. Higher amounts of BaO inhibited the C3S crystallization and lead to preferential formation of dicalcium silicate solid solution. Three triclinic forms T1, T2 and T3 of C3S were stabilized. The lattice parameters changed linearly to the barium content, however the discontinuity appeared at the phase transformation boundary, which follows the Vegards law. The crystallographic structure of T1 and T2 was similar to that of T3. The SiO44- tetrahedra were distorted in T1 and T2, while that was approximately regular tetrahedron in T3. The phase transitions of C3S were influenced by the incorporation of barium. It was believed that the stabilization of high temperature polymorphs of C3S was related to the lattice distortion caused by ionic substitution.
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DOI：
--
发表时间：
2012
期刊：
Journal of the Chinese Ceramic Society
影响因子：
--
作者：
Ouyang Shixi
通讯作者：
Ouyang Shixi
DOI：
--
发表时间：
2012
期刊：
Journal of the Chinese Ceramic Society
影响因子：
--
作者：
Ouyang Shixi
通讯作者：
Ouyang Shixi
DOI：
10.1016/b978-0-7506-6256-7.x5007-3
发表时间：
2001
期刊：
--
影响因子：
--
作者：
P. Hewlett;F. Lea
通讯作者：
P. Hewlett;F. Lea
DOI：
10.1111/j.1151-2916.1967.tb15009.x
发表时间：
1967-01-01
影响因子：
3.9
作者：
BIGARE, M;GUINIER, A;WOERMANN, E
通讯作者：
WOERMANN, E
DOI：
--
发表时间：
1975
期刊：
--
影响因子：
--
作者：
N. Golovastikov;R. Matveeva;N. Belov
通讯作者：
N. Golovastikov;R. Matveeva;N. Belov