Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/24856
Título: | Self-mated tribological systems based on multilayer micro/nanocrystalline CVD diamond coatings |
Autor(es): | Salgueiredo, E. Abreu, C. S. Amaral, M. Oliveira, F. J. Gomes, J. R. Silva, R. F. |
Palavras-chave: | Diamond multilayers Nanocrystalline diamond Hot filament CVD Friction Wear |
Data: | 2013 |
Editora: | Elsevier |
Revista: | Wear |
Resumo(s): | The tribological response of multilayer micro/nanocrystalline diamond coatings grown by the hot filament CVD technique is investigated. These multigrade systems were tailored to comprise a starting microcrystalline diamond (MCD) layer with high adhesion to a silicon nitride (Si3N4) ceramic substrate, and a top nanocrystalline diamond (NCD) layer with reduced surface roughness. Tribological tests were carried out with a reciprocating sliding configuration without lubrication. Such composite coatings exhibit a superior critical load before delamination (130–200N), when compared to the mono -(60–100 N) and bilayer coatings (110N), considering ∼10 micrometers thick films. Regarding the friction behaviour, a short-lived initial high friction coefficient was followed by low friction regimes (friction coefficients between 0.02 and 0.09) as a result of the polished surfaces tailored by the tribological solicitation. Very mild to mild wear regimes (wear coefficient values between 4.1 x10−8 and 7.7 x10−7 mm3 N−1 m−1) governed the wear performance of the self-mated multilayer coatings when subjected to high-load short-term tests (60–200N; 2h; 86m) and medium-load endurance tests (60N; 16h; 691m). |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/24856 |
DOI: | 10.1016/j.wear.2013.03.049 |
ISSN: | 0043-1648 |
Versão da editora: | http://dx.doi.org/10.1016/j.wear.2013.03.049 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | CT2M - Artigos em revistas de circulação internacional com arbitragem científica |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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E Salgueiredo et al_Wear_2013_Self mated tribological systems on multilayer CVD diamond coatings.pdf Acesso restrito! | Artigo publicado em revista internacional | 1,81 MB | Adobe PDF | Ver/Abrir |