| 1. Identificação | |
| Tipo de Referência | Artigo em Evento (Conference Proceedings) |
| Site | mtc-m16b.sid.inpe.br |
| Código do Detentor | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Repositório | sid.inpe.br/mtc-m17@80/2007/12.06.13.37 |
| Repositório de Metadados | sid.inpe.br/mtc-m17@80/2007/12.06.13.37.40 |
| Última Atualização dos Metadados | 2018:06.05.03.36.04 (UTC) administrator |
| Chave Secundária | INPE--PRE/ |
| Chave de Citação | SantosRadBonRodTra:2007:FrCoSt |
| Título | Friction Coefficient Studies on Hold-Down Systems for Space Mechanisms  |
| Ano | 2007 |
| Data de Acesso | 18 maio 2024 |
| Tipo Secundário | PRE CI |
| 2. Contextualização | |
| Autor | 1 Santos, L. V. 2 Radi, P. A. 3 Bonetti, L. F. 4 Rodrigues, G. C 5 Trava-Airoldi, Vladimir Jesus |
| Grupo | 1 LAS-INPE-MCT-BR 2 LAS-INPE-MCT-BR 3 LAS-INPE-MCT-BR 4 5 LAS-INPE-MCT-BR |
| Afiliação | 1 Instituto Nacional de Pesquisas Espaciais (INPE) 2 Instituto Nacional de Pesquisas Espaciais (INPE) 3 Instituto Nacional de Pesquisas Espaciais (INPE) 4 5 Instituto Nacional de Pesquisas Espaciais (INPE) |
| Nome do Evento | International Conference on Metallurgical Coatings and Thin Films. |
| Localização do Evento | San Diego, Califórnia |
| Data | 23-27 Apr. |
| Histórico (UTC) | 2007-12-06 13:37:40 :: simone -> administrator :: 2012-10-24 00:08:29 :: administrator -> simone :: 2013-02-20 15:20:11 :: simone -> administrator :: 2007 2018-06-05 03:36:04 :: administrator -> marciana :: 2007 |
| 3. Conteúdo e estrutura | |
| É a matriz ou uma cópia? | é a matriz |
| Estágio do Conteúdo | concluido |
| Transferível | 1 |
| Tipo do Conteúdo | External Contribution |
| Resumo | Low-hydrogenated diamond-like carbon (DLC) films have a high friction coefficient in a vacuum environment, but they show a low friction coefficient in an atmospheric environment. Thus, DLC films acts as solid lubricants in air, so they can be used to minimize friction during the satellite assembly process, and yet in vacuum transition can be used on texturized parts on hold down devices to avoid moving parts and kept its in closed contact during the launching process until the unit reaches deep space. In deep space can be used as a protective coating to avoid metal in contact, prevent cold welding, and to improve panel deployment and operation in a vacuum environment. As a Chameleon-like for DLC changes friction coefficient according the environment. In this study DLC films and tungsten carbide (WC) were tested and compared as protective coatings on holddown devices with texturized and non-texturized Ti6Al4V surfaces to keep in closed contact two surfaces in launch configuration. A specific tribosystem was building to study the locked surface, friction coefficient, and adhesion. The test couples were WC/WC and DLC/DLC, with and without texturized surfaces and additional tests were done evaluated DLC friction coefficients under high pressure conditions in air and vacuum environments. The DLC films' hardness was evaluated by microindentation. Friction coefficients in air and ultra-high vacuum environments were measured on bodies witness at low sliding speeds by pin-on-disc, as required by spacecraft operation procedures. Raman scattering spectroscopy was also used in order to determine the DLC films' structural characteristics before and after sliding tests to evaluated DLC film chemical signatures. Novelty: very adherent, DLC chameleon-like for high friction coefficients on Ti6Al4V substrate on locked space components. |
| Área | FISMAT |
| Arranjo | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > LABAS > Friction Coefficient Studies... |
| Conteúdo da Pasta doc | não têm arquivos |
| Conteúdo da Pasta source | não têm arquivos |
| Conteúdo da Pasta agreement | não têm arquivos |
| 4. Condições de acesso e uso | |
| Idioma | en |
| Grupo de Usuários | administrator simone administrator |
| Visibilidade | shown |
| 5. Fontes relacionadas | |
| Unidades Imediatamente Superiores | 8JMKD3MGPCW/3ESR3H2 |
| Acervo Hospedeiro | lcp.inpe.br/ignes/2004/02.12.18.39 cptec.inpe.br/walmeida/2003/04.25.17.12 |
| 6. Notas | |
| Campos Vazios | archivingpolicy archivist booktitle callnumber copyholder copyright creatorhistory descriptionlevel dissemination documentstage doi e-mailaddress edition editor electronicmailaddress format identifier isbn issn keywords label lineage mark mirrorrepository nextedition notes numberoffiles numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress project publisher publisheraddress readergroup readpermission resumeid rightsholder schedulinginformation secondarydate secondarymark serieseditor session shorttitle size sponsor subject targetfile tertiarymark tertiarytype type url versiontype volume |
| 7. Controle da descrição | |
| e-Mail (login) | marciana |
| atualizar | |