Friction and wear performance of HFCVD nanocrystalline diamond coated silicon nitride ceramics
Main Author: | |
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Publication Date: | 2006 |
Other Authors: | , , , , |
Format: | Article |
Language: | eng |
Source: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Download full: | http://hdl.handle.net/1822/6129 |
Summary: | Silicon nitride (Si3N4) ceramics were selected as substrates due to their thermal and chemical compatibility to diamond that ensure the adequate NCD adhesion for mechanical purposes. NCD deposition was performed by hot-filament chemical vapour method (HFCVD) using Ar/H2/CH4 gas mixtures. The tribological assessment of homologous pairs of NCD films was accomplished using reciprocating ball-on-flat tests using NCD coated Si3N4 plates and balls. The friction evolution is characterized by an initial running-in regime with a sharp peak up to 0.70, shortly followed by a steady-state regime identified by very low friction coefficients values (0.02–0.03). The threshold load prior to delamination depends on the starting surface roughness of the substrates and attains a value of ¨40 N. In terms of wear performance, the NCD films reveal a mild wear regime (K~10-7 mm3 N-1 m-1) for self-mated dry sliding conditions. |
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Friction and wear performance of HFCVD nanocrystalline diamond coated silicon nitride ceramicsNanocrystallineHot filament CVDTribologyScience & TechnologySilicon nitride (Si3N4) ceramics were selected as substrates due to their thermal and chemical compatibility to diamond that ensure the adequate NCD adhesion for mechanical purposes. NCD deposition was performed by hot-filament chemical vapour method (HFCVD) using Ar/H2/CH4 gas mixtures. The tribological assessment of homologous pairs of NCD films was accomplished using reciprocating ball-on-flat tests using NCD coated Si3N4 plates and balls. The friction evolution is characterized by an initial running-in regime with a sharp peak up to 0.70, shortly followed by a steady-state regime identified by very low friction coefficients values (0.02–0.03). The threshold load prior to delamination depends on the starting surface roughness of the substrates and attains a value of ¨40 N. In terms of wear performance, the NCD films reveal a mild wear regime (K~10-7 mm3 N-1 m-1) for self-mated dry sliding conditions.ElsevierUniversidade do MinhoAbreu, C. S.Amaral, M.Fernandes, A. J. S.Oliveira, F. J.Silva, R. F.Gomes, J. R.20062006-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/6129eng"Diamond and related materials". ISSN 0925-9635. 15:4-8 (2006) 739-744.0925-963510.1016/j.diamond.2005.10.042info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T11:55:04Zoai:repositorium.sdum.uminho.pt:1822/6129Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:44:33.702023Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Friction and wear performance of HFCVD nanocrystalline diamond coated silicon nitride ceramics |
title |
Friction and wear performance of HFCVD nanocrystalline diamond coated silicon nitride ceramics |
spellingShingle |
Friction and wear performance of HFCVD nanocrystalline diamond coated silicon nitride ceramics Abreu, C. S. Nanocrystalline Hot filament CVD Tribology Science & Technology |
title_short |
Friction and wear performance of HFCVD nanocrystalline diamond coated silicon nitride ceramics |
title_full |
Friction and wear performance of HFCVD nanocrystalline diamond coated silicon nitride ceramics |
title_fullStr |
Friction and wear performance of HFCVD nanocrystalline diamond coated silicon nitride ceramics |
title_full_unstemmed |
Friction and wear performance of HFCVD nanocrystalline diamond coated silicon nitride ceramics |
title_sort |
Friction and wear performance of HFCVD nanocrystalline diamond coated silicon nitride ceramics |
author |
Abreu, C. S. |
author_facet |
Abreu, C. S. Amaral, M. Fernandes, A. J. S. Oliveira, F. J. Silva, R. F. Gomes, J. R. |
author_role |
author |
author2 |
Amaral, M. Fernandes, A. J. S. Oliveira, F. J. Silva, R. F. Gomes, J. R. |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Abreu, C. S. Amaral, M. Fernandes, A. J. S. Oliveira, F. J. Silva, R. F. Gomes, J. R. |
dc.subject.por.fl_str_mv |
Nanocrystalline Hot filament CVD Tribology Science & Technology |
topic |
Nanocrystalline Hot filament CVD Tribology Science & Technology |
description |
Silicon nitride (Si3N4) ceramics were selected as substrates due to their thermal and chemical compatibility to diamond that ensure the adequate NCD adhesion for mechanical purposes. NCD deposition was performed by hot-filament chemical vapour method (HFCVD) using Ar/H2/CH4 gas mixtures. The tribological assessment of homologous pairs of NCD films was accomplished using reciprocating ball-on-flat tests using NCD coated Si3N4 plates and balls. The friction evolution is characterized by an initial running-in regime with a sharp peak up to 0.70, shortly followed by a steady-state regime identified by very low friction coefficients values (0.02–0.03). The threshold load prior to delamination depends on the starting surface roughness of the substrates and attains a value of ¨40 N. In terms of wear performance, the NCD films reveal a mild wear regime (K~10-7 mm3 N-1 m-1) for self-mated dry sliding conditions. |
publishDate |
2006 |
dc.date.none.fl_str_mv |
2006 2006-01-01T00:00:00Z |
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/1822/6129 |
url |
http://hdl.handle.net/1822/6129 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
"Diamond and related materials". ISSN 0925-9635. 15:4-8 (2006) 739-744. 0925-9635 10.1016/j.diamond.2005.10.042 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
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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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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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