POLYMORPHISM OF TRICALCIUM SILICATE AND ITS SOLID SOLUTIONS
POLYMORPHISM OF TRICALCIUM SILICATE AND ITS SOLID SOLUTIONS
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DOI：
10.1111/j.1151-2916.1967.tb15009.x
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发表时间：
1967-01-01
影响因子：
3.9
通讯作者：
WOERMANN, E
中科院分区：
文献类型：
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作者：
BIGARE, M;GUINIER, A;WOERMANN, E
在硅酸三钙及其固溶体中建立了六种改性：一种菱形(R)，两种单斜形（MI，MII）和三斜形（TI，TII，TIII）。所有这些形式都是菱形或伪菱形，并且非常相似；X射线图和转换焓的变化很小。X射线和dta仅观察到五个转变中的三个：TI - TII（600°），TIII-MI（980°）和mi - mii（990°）；一个通过DTA （TII-TIII, 920°）建立，另一个通过X射线（MII-R, 1050°）建立。这种多态格式与其他作者的结果进行了严格的比较，并讨论了各种位移变换的性质。对ca3sio5与al2o3和ZnO固溶体的X射线和差热分析建立了温度和组成的相关系。用Al2O3稳定了两种改性（TIandTII）；ZnO有5个多晶（TITII， MI，MII, and r）。在纯C3S和固溶体条件下，结果一致，且与硅酸盐水泥熟料中土的组成密切相关。
In tricalcium silicate and its solid solutions six modifications were established: one rhombohedral (R), two monoclinic (MI,MII), and three triclinic (TI,TII,TIII). All these forms are rhombohedral or pseudorhombohedral and extremely similar; the variations in the X‐ray diagrams and the transformation enthalpies are minute. Only three of the five transitions were observed by both X raysandDTA:TI‐TII(600°),TIII–MI(980°), andMI–MII(990°); one was established by DTA (TII–TIII, 920°) and one by X rays only (MII–R, 1050°C). This scheme of polymorphism is compared critically with results of other authors, and the nature of the various displacive transformations is discussed. X‐ray and DTA investigations of solid solutions of Ca3SiO5with Al2O3and ZnO established the phase relations as functions of temperature and composition. With Al2O3, two modifications (TIandTII) were stabilized; and with ZnO, five polymorphs (TITII, MI,MII, andR). With both pure C3S and the solid solutions, the results are consistent and have a close bearing on the constitution of alites in portland cement clinker.