| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Diffusion parameters of grain-growth inhibitors in WC based hardmetals with Co, Fe/Ni and Fe/Co/Ni binder alloys
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| Autores: |
Buchegger, Christoph
Lengauer, Walter
Bernardi, Johannes
Gruber, Jakob
Ntaflos, Theo
Kiraly, Franz
Langlade, Jessica
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| Data: |
2015-03
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| Ano: |
2015
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| Palavras-chave: |
Hardmetal
Early sintering stage
Grain-growth inhibitor
Diffusion
Alternative binder
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| Resumo: |
The diffusion behaviour of the grain-growth inhibitors (GGI) Cr and V during early sintering stages from 950-1150 °C was investigated by means of diffusion couples of the type WC-GGI-binder/WC-binder. Besides Co, also alternative Fe/Ni and Fe/Co/Ni binder alloys were investigated. It was found that the diffusion in green bodies differs significantly from sintered hardmetals. Diffusivities in the binder phase were determined from diffusion couples prepared from model alloys and were found to be almost equal for Co and alternative binder alloys. The diffusion parameters determined from green bodies allowed to estimate the GGI distribution in a hardmetal during heat up. This was subsequently used to estimate an appropriate grain size of VC and Cr3C2 in hardmetals, which is required to ensure a sufficient GGI distribution during sintering before WC grain-growth initiates.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
https://archimer.ifremer.fr/doc/00194/30491/28896.pdf
DOI:10.1016/j.ijrmhm.2014.06.002
https://archimer.ifremer.fr/doc/00194/30491/
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| Editor: |
Elsevier Sci Ltd
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| Formato: |
application/pdf
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| Fonte: |
International Journal Of Refractory Metals & Hard Materials (0263-4368) (Elsevier Sci Ltd), 2015-03 , Vol. 49 , P. 67-74
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| Direitos: |
2014 Elsevier Ltd. All rights reserved.
info:eu-repo/semantics/openAccess
restricted use
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