Publication
Self-mated tribological systems based on multilayer micro/nanocrystalline CVD diamond coatings
| dc.contributor.author | Salgueiredo, E. | |
| dc.contributor.author | Abreu, Cristiano | |
| dc.contributor.author | Amaral, M. | |
| dc.contributor.author | Oliveira, F. J. | |
| dc.contributor.author | Gomes, J. R. | |
| dc.contributor.author | Silva, R. F. | |
| dc.date.accessioned | 2014-01-28T14:45:30Z | |
| dc.date.available | 2014-01-28T14:45:30Z | |
| dc.date.issued | 2013 | |
| dc.description.abstract | 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 (130–200 N), when compared to the mono- (60–100 N) and bilayer coatings (110 N), considering ∼10 µm 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 4.1×10−8 and 7.7×10−7 mm3 N−1 m−1) governed the wear performance of the self-mated multilayer coatings when subjected to high-load short-term tests (60–200 N; 2 h; 86 m) and medium-load endurance tests (60 N; 16 h; 691 m). | por |
| dc.identifier.doi | 10.1016/j.wear.2013.03.049 | |
| dc.identifier.issn | 0043-1648 | |
| dc.identifier.uri | http://hdl.handle.net/10400.22/3478 | |
| dc.language.iso | eng | por |
| dc.peerreviewed | yes | por |
| dc.publisher | Elsevier | por |
| dc.relation.ispartofseries | Wear; Vol. 303, Issues 1-2 | |
| dc.relation.publisherversion | http://www.sciencedirect.com/science/article/pii/S0043164813002391 | por |
| dc.subject | Diamond multilayers | por |
| dc.subject | Nanocrystallinediamond | por |
| dc.subject | Hot filament CVD | por |
| dc.subject | Friction | por |
| dc.subject | Wear | por |
| dc.title | Self-mated tribological systems based on multilayer micro/nanocrystalline CVD diamond coatings | por |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.citation.endPage | 234 | por |
| oaire.citation.issue | Issues 1-2 | por |
| oaire.citation.startPage | 225 | por |
| oaire.citation.title | Wear | por |
| oaire.citation.volume | Vol. 303 | por |
| rcaap.rights | openAccess | por |
| rcaap.type | article | por |