Revealing anti-oxidation mechanisms of titanium composite materials by detailed characterization of scale phase constitutions
Source abstract
Abstract
Abstract To understand the oxidation mechanisms of (TiC+TiB+(TiZr)5Si3)/TA15 composites and elucidate their superior oxidation resistance, a systematically microstructural characterization of the oxide scale was investigated. The results showed that the oxide scale was consisted of the outer R-TiO2+Al2O3 mixed layer, inner gradient R-TiO2 layer, dispersive amorphous/nanocrystalline SiO2 and interfacial Ti2AlN+Ti2N layer. Such multi-layered structure could efficiently hinder the penetration of oxygen and alleviate the thermal stress generated during cyclic oxidation. Moreover, the thermodynamic stabilities of different Ti-O compounds were calculated by the first principles method, which revealed the evolution of Ti-O compounds.
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Research context
OpenAlex topics: Advanced materials and composites · Advanced ceramic materials synthesis · Aluminum Alloys Composites Properties
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