Preparation of calcium aluminate matrix composites by combustion synthesis

摘要: CaO–Al2O3–TiB2 composites have been produced by the Combustion Synthesis technique. These materials matrices based on binary calcium-aluminate compounds, i.e., Ca3Al2O6 (C3A), Ca12Al14O33 (C12A7), CaAl2O4 (CA), CaAl4O7 (CA2) and CaAl12O19 (CA6). Except for samples with matrix composition of C3A, combustion synthesis reactions can be characterized as stable self-propagating waves temperatures ranging from 2125 K to 2717 wave velocity 4.0 mm/s 10.6 mm/s. For a C12A7, CA, CA2, predominantly equilibrium compound phase was formed, while non-equilibrium phases were also present. There no evidence CA6 formation corresponding CA6.