Abstract
Phase-boundary reactions between single crystals of different binary oxides (e.g., NiO + Al2O3 → NiAl2C4) are described. The reaction product can be monocrystalline or polycrystalline depending upon crystal structure of reactants and reaction product and on experimental conditions. The reaction product may be a single crystal even if the crystal structures of the reactants differ from that of the reaction product. Examples are given. Epitaxy, structural relationships, and the atomic mechanism of the phase-boundary reaction are discussed. It is concluded that under certain conditions dislocations may play a decisive role for the phase-boundary reaction. The kinetics involving phase-boundary reactions is discussed.
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Sockel, H.G., Schmalzried, H. (1966). The Role of Phase Boundaries During Reaction Between Single Crystals of Various Oxides. In: Kriegel, W.W., Palmour, H. (eds) The Role of Grain Boundaries and Surfaces in Ceramics. Materials Science Research. Springer, Boston, MA. https://doi.org/10.1007/978-1-4899-6311-6_5
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DOI: https://doi.org/10.1007/978-1-4899-6311-6_5
Publisher Name: Springer, Boston, MA
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