Effects of Nitrogen Partial Pressure during Sintering on Microstructure and Properties of(Ti,Nb)(C,N)-based Cermets AITranslate
Abstract AITranslate
(Ti, Nb)(C,N) solid solution powder was used for preparing(Ti, Nb)(C,N)-based cermets at different nitrogen partial pressures.At the same time, Ti(C,N)-based cermets were considered as the control group.The effects of different nitrogen partial pressures during sintering on microstructure and mechanical properties of the cermets were studied by a scanning electron microscope with an energy spectrum analyzer and a Vickers hardness tester, combined with thermodynamic calculation.The results show that compared with Ti(C,N)-based cermets prepared with the same sintering process,(Ti, Nb)(C,N)-based cermets have finer grains, and only a few grains have special weak core-rim structure.There is a binder phase Ni-rich gradient layer on the surface of vacuum-sintered(Ti, Nb)(C,N)-based cermets.As the nitrogen partial pressure during sintering increases, the hard phase in the surface layer of(Ti, Nb)(C,N)-based cermets abnormally grows up.The formation of the gradient structure of(Ti, Nb)(C,N)-based cermets is due to the difference in N activity between the surface and the core of the material sintered at different nitrogen partial pressures, and different diffusion direction and rate of Ti, Nb and other atoms, attributed to thermodynamic coupling.
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Basic Information:
DOI：
Chinese Library Classification Number:TG148[金属学及工艺—金属材料]
Citation Information:
(Ti, Nb)(C,N) solid solution powder was used for preparing(Ti, Nb)(C,N)-based cermets at different nitrogen partial pressures.At the same time, Ti(C,N)-based cermets were considered as the control group.The effects of different nitrogen partial pressures during sintering on microstructure and mechanical properties of the cermets were studied by a scanning electron microscope with an energy spectrum analyzer and a Vickers hardness tester, combined with thermodynamic calculation.The results show that compared with Ti(C,N)-based cermets prepared with the same sintering process,(Ti, Nb)(C,N)-based cermets have finer grains, and only a few grains have special weak core-rim structure.There is a binder phase Ni-rich gradient layer on the surface of vacuum-sintered(Ti, Nb)(C,N)-based cermets.As the nitrogen partial pressure during sintering increases, the hard phase in the surface layer of(Ti, Nb)(C,N)-based cermets abnormally grows up.The formation of the gradient structure of(Ti, Nb)(C,N)-based cermets is due to the difference in N activity between the surface and the core of the material sintered at different nitrogen partial pressures, and different diffusion direction and rate of Ti, Nb and other atoms, attributed to thermodynamic coupling.
quote
| GB/T 7714-2015 | [1] FENG Ke-tao, LYU Jian, KAN Gao-hui, et al. Effects of Nitrogen Partial Pressure during Sintering on Microstructure and Properties of(Ti,Nb)(C,N)-based Cermets[J]. Rare Metals and Cemented Carbides, 2021(6): 47-54. |
| MLA | [1] FENG Ke-tao, et al., "Effects of Nitrogen Partial Pressure during Sintering on Microstructure and Properties of(Ti,Nb)(C,N)-based Cermets." Rare Metals and Cemented Carbides, no. 6, 2021, pp. 47-54. |
| APA | [1] FENG Ke-tao, LYU Jian, KAN Gao-hui, ZHENG Zheng-hui, LI Sha, WEI Jian-lei, & LI Ya-jun. (2021). Effects of Nitrogen Partial Pressure during Sintering on Microstructure and Properties of(Ti,Nb)(C,N)-based Cermets. Rare Metals and Cemented Carbides(6), 47-54. |
| IEEE | [1] FENG Ke-tao, LYU Jian, KAN Gao-hui, ZHENG Zheng-hui, LI Sha, WEI Jian-lei, and LI Ya-jun, "Effects of Nitrogen Partial Pressure during Sintering on Microstructure and Properties of(Ti,Nb)(C,N)-based Cermets," Rare Metals and Cemented Carbides, no. 6, pp. 47-54, 2021. keywords: {(Ti;Nb)(C;N);cermet;solid solution;nitrogen partial pressure;gradient structure;thermodynamic calculation} |