Effects of cooling rate on the aluminate and ferrite phases

4 Effects of cooling rate on the aluminate and ferrite phases 

The conditions of crystallization affect the ferrite and aluminate in ways 

Other than in their mean compositions. Slow cooling produces relatively large crystals of each phase, while fast cooling produces close intergrowths textures are discussed further in Section 4.2.1. Zoning occurs readily in the ferrite (Section 2.3.1), and may also occur in the aluminate. The distribution of atoms between octahedral and tetrahedral sites in the ferrite depends on the temperature at which internal equilibrium within the crystal has been achieved (Section 1.5.1). The degree of crystallinity of both phases appears to vary with cooling rate (V3). All these effects, and perhaps others, may affect the behaviour of the interstitial material on hydration. 

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