Dissolution-precipitation mechanism of combustion synthesis of calcium aluminate
Source abstract
Abstract
Abstract The mechanism of combustion synthesis (CS) for calcium aluminate was analyzed by a combustion front quenching method. The phase compositions of different zones in the quenched sample were examined by X-ray diffraction (XRD). The microstructural evolution during the CS process was explored by field-emission scanning electron microscopy equipped with energy dispersive spectrometer (FESEM-EDS). Moreover, the combustion temperature and wave velocity were measured. The results showed that the combustion reaction started with the decomposition of CaO 2 and melting of Al, at the same time, O 2 reacted with Al forming Al 2 O 3 , which released a large amount of heat to fuse CaO and Al 2 O 3 forming the liquid. Finally, calcium aluminates with good crystallinity would be gradually precipitated from the CaO-Al 2 O 3 liquid. Furthermore, a model corresponding to the dissolution-precipitation mechanism was proposed.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Intermetallics and Advanced Alloy Properties · Catalytic Processes in Materials Science · Energetic Materials and Combustion
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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