| Microstructural evolution and characteristics during sintering of submicron Ti(C,N)-based cermet |
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| 作者姓名： | 郑勇 熊惟皓 游敏 刘文俊 |
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| 作者单位： | College of Mechanical and Materials Science，College of Materials Science and Engineering，College of Mechanical and Materials Science，College of Mechanical and Materials Science China Three Gorges University，Yichang 443002，China，College of Materials Science and Engineering，Huazhong University of Science and Technology，Wuhan 430074，China，Huazhong University of Science and Technology，Wuhan 430074，China，China Three Gorges University，Yichang 443002，China，China Three Gorges University，Yichang 443002，China |
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| 基金项目： | Project(5 0 10 40 0 6)supportedbytheNationalNaturalScienceFoundationofChina,project(2 000J032)supportedbytheNaturalScienceFoundationofHubeiProvince,China，andproject(2 0 0 1D67002)supportedbytheEducationBureauScienceFoundationofHubeiProvince,China |
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| 摘 要： | 1 INTRODUCTIONThebasiccompositionofTi(C ,N ) basedcer metsisTi(C ,N)andNi.IthasbeenknownthattheadditionofMoorMo2 Cisnecessarytoensuregoodwettability1] ,andWCorothercarbidesareoftenaddedtoimprovetheplasticityofhardgrainsandhothardnessofthecermets2 ] .Ti(C ,N) basedcermetsconsistmainlyofcarbonitride grainsandmetalbinder.The“core rim”structurewithinthehardgrainsisthetypicalmicrostructureofcermets .Thecarbonitride phaseenrichedMoandW (therimphase)hasbeenfoundtosurroundthe Ti(C ,…
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Microstructural evolution and characteristics during sintering of submicron Ti(C,N)-based cermet |
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| ZHENG Yong.Microstructural evolution and characteristics during sintering of submicron Ti(C,N)-based cermet[J].Transactions of Nonferrous Metals Society of China,2003,13(6). |
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| Authors: | ZHENG Yong |
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| Abstract: | Ti(C,N)-based cermets were prepared with submicron powders. The microstructure evolution and characteristics during the sintering of cermet were studied by TEM, SEM, EDX and XRD. The forming mechanism of the structures was also studied. There exist inner rim and outer rim between the hard cores and the binder. The inner rim is enriched in Mo and W compared with the outer rim, and is formed during the solid sintering by counter diffusion of TiC, Mo_2C and WC. The outer rim is formed during the liquid sintering by Ostwald ripening mechanism. |
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| Keywords: | submicron Ti(C N)-based cermet microstructure evolution forming mechanism |
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