Microstructures and performances of pressureless sintered MoSi2-Al2O3 composites
Source abstract
Abstract
MoSi 2-Al 2O 3 composites with various volume fractions of Al 2O 3 from 0 to 40 vol% were fabricated by pressureless sintering at 1550 ℃. MoSi 2 powder was prepared by silicothermic reduction of MoS 2 . Microstructure, mechanical properties, electrical resistivity and oxidation behavior of composites were experimentally examined to investigate the influence of Al 2O 3 addition. The results demonstrated that proper introduction of Al 2O 3 contributed to improving the oxidation resistance and mechanical properties. Among them, MoSi 2-20 vol%Al 2O 3 composite presented excellent comprehensive properties and oxidation resistance. The oxide scale consisting of SiO 2 and Al 2O 3 was formed on the substrate and effectively prevented the inward diffusion of oxygen.
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Research context
OpenAlex topics: Intermetallics and Advanced Alloy Properties · MXene and MAX Phase Materials · Advanced materials and composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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