Development of WC-NiCrMo hardmetals
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10773/37025 |
Resumo: | The demand for improved components with a wide range of properties is a reality in today's hardmetal market. Furthermore, supply shortages of raw materials such as W and especially Co resulted in rapid price fluctuations. Combined with stricter environmental legislation and health protection, these facts prompt the demand for alternative or modified binders. Therefore, in this work, WC-NiCrMo composites were developed as a potential alternative to conventional WC-Co hardmetals. To evaluate this new hardmetal composite, prototypes of submicrometric WC with approximately 15 vol% of NiCrMo binder were produced by conventional powder metallurgy route. Thermodynamic assessment, wettability testing and constant heating rate dilatometry were performed to design an adequate sintering route. A detailed characterization of the mechanical properties (Young's modulus, Vickers hardness and fracture toughness), together with corrosion resistance assessment (OCP, polarization curves, EIS) and abrasive wear (ball-cratering) resistance evaluation were undertaken. Good wettability of molten NiCrMo binder on WC surface was observed, and highly dense compacts could be successfully attained by gas pressure sintering. The new WC-NiCrMo composite has lower hardness but higher corrosion resistance and better wear resistance than the conventional WC-Co hardmetals. |
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Development of WC-NiCrMo hardmetalsAlternative bindersThermodynamic assessmentSintering behaviourCorrosion resistanceWear resistanceThe demand for improved components with a wide range of properties is a reality in today's hardmetal market. Furthermore, supply shortages of raw materials such as W and especially Co resulted in rapid price fluctuations. Combined with stricter environmental legislation and health protection, these facts prompt the demand for alternative or modified binders. Therefore, in this work, WC-NiCrMo composites were developed as a potential alternative to conventional WC-Co hardmetals. To evaluate this new hardmetal composite, prototypes of submicrometric WC with approximately 15 vol% of NiCrMo binder were produced by conventional powder metallurgy route. Thermodynamic assessment, wettability testing and constant heating rate dilatometry were performed to design an adequate sintering route. A detailed characterization of the mechanical properties (Young's modulus, Vickers hardness and fracture toughness), together with corrosion resistance assessment (OCP, polarization curves, EIS) and abrasive wear (ball-cratering) resistance evaluation were undertaken. Good wettability of molten NiCrMo binder on WC surface was observed, and highly dense compacts could be successfully attained by gas pressure sintering. The new WC-NiCrMo composite has lower hardness but higher corrosion resistance and better wear resistance than the conventional WC-Co hardmetals.Elsevier2023-042023-04-01T00:00:00Z2025-04-30T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/37025eng0263-436810.1016/j.ijrmhm.2023.106147Pereira, P.Rocha, A.M. FerroBastos, A.C.Oliveira, F.J.Vilhena, L.M.Ramalho, A.Sacramento, J.Malheiros, L.F.Senos, A.M.R.info:eu-repo/semantics/embargoedAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-17T04:18:50ZPortal AgregadorONG |
dc.title.none.fl_str_mv |
Development of WC-NiCrMo hardmetals |
title |
Development of WC-NiCrMo hardmetals |
spellingShingle |
Development of WC-NiCrMo hardmetals Pereira, P. Alternative binders Thermodynamic assessment Sintering behaviour Corrosion resistance Wear resistance |
title_short |
Development of WC-NiCrMo hardmetals |
title_full |
Development of WC-NiCrMo hardmetals |
title_fullStr |
Development of WC-NiCrMo hardmetals |
title_full_unstemmed |
Development of WC-NiCrMo hardmetals |
title_sort |
Development of WC-NiCrMo hardmetals |
author |
Pereira, P. |
author_facet |
Pereira, P. Rocha, A.M. Ferro Bastos, A.C. Oliveira, F.J. Vilhena, L.M. Ramalho, A. Sacramento, J. Malheiros, L.F. Senos, A.M.R. |
author_role |
author |
author2 |
Rocha, A.M. Ferro Bastos, A.C. Oliveira, F.J. Vilhena, L.M. Ramalho, A. Sacramento, J. Malheiros, L.F. Senos, A.M.R. |
author2_role |
author author author author author author author author |
dc.contributor.author.fl_str_mv |
Pereira, P. Rocha, A.M. Ferro Bastos, A.C. Oliveira, F.J. Vilhena, L.M. Ramalho, A. Sacramento, J. Malheiros, L.F. Senos, A.M.R. |
dc.subject.por.fl_str_mv |
Alternative binders Thermodynamic assessment Sintering behaviour Corrosion resistance Wear resistance |
topic |
Alternative binders Thermodynamic assessment Sintering behaviour Corrosion resistance Wear resistance |
description |
The demand for improved components with a wide range of properties is a reality in today's hardmetal market. Furthermore, supply shortages of raw materials such as W and especially Co resulted in rapid price fluctuations. Combined with stricter environmental legislation and health protection, these facts prompt the demand for alternative or modified binders. Therefore, in this work, WC-NiCrMo composites were developed as a potential alternative to conventional WC-Co hardmetals. To evaluate this new hardmetal composite, prototypes of submicrometric WC with approximately 15 vol% of NiCrMo binder were produced by conventional powder metallurgy route. Thermodynamic assessment, wettability testing and constant heating rate dilatometry were performed to design an adequate sintering route. A detailed characterization of the mechanical properties (Young's modulus, Vickers hardness and fracture toughness), together with corrosion resistance assessment (OCP, polarization curves, EIS) and abrasive wear (ball-cratering) resistance evaluation were undertaken. Good wettability of molten NiCrMo binder on WC surface was observed, and highly dense compacts could be successfully attained by gas pressure sintering. The new WC-NiCrMo composite has lower hardness but higher corrosion resistance and better wear resistance than the conventional WC-Co hardmetals. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-04 2023-04-01T00:00:00Z 2025-04-30T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10773/37025 |
url |
http://hdl.handle.net/10773/37025 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
0263-4368 10.1016/j.ijrmhm.2023.106147 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/embargoedAccess |
eu_rights_str_mv |
embargoedAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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1777303596760563712 |