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- W2357978097 abstract "Mo-TiC cermets have been prepared by powder metallurgy process.The oxidation behaviors of Mo-TiC cermet at 1 200 ℃ were studied.The bending mechanical properties of Mo-TiC cermet before and after oxidation were compared.The results indicate that high temperature anti-oxidation property of Mo-TiC cermet improves with increasing the TiC content.After oxidized at 1 200 ℃ for 60 min,the mass loss ratio of Mo-40%TiC and Mo-60%TiC cermets are 23.91% and 4.79%,respectively.The oxidation of Mo-TiC cermet begins at defects or grain boundaries,and then corrades into the inside and ambient area gradually.Molybdenum is oxidized to volatile MoO3 and TiC is oxidized to TiO2.TiO2 particles can form a densification sheet-layered structure on the surface of ceramic.The sheet-layered strucrure can obstruct the intrusion of oxygen to the substrate,and this effect will be enhanced with increasing TiC content in the cermet.The bending strength of Mo-40%TiC is 502 MPa before oxidation,but reduces to 160MPa after oxidation.The bending strength after oxidation of Mo-TiC cermet slightly increases with increasing TiC content." @default.
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- W2357978097 date "2012-01-01" @default.
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- W2357978097 title "Oxidation behavior and mechanism of Mo-TiC cermet at high temperature" @default.
- W2357978097 hasPublicationYear "2012" @default.
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