16 resultados para 1995_01180843 TM-31 4301308
Filtro por publicador
- Andina Digital - Repositorio UASB-Digital - Universidade Andina Simón Bolívar (7)
- Aquatic Commons (30)
- Archive of European Integration (144)
- Archivo Digital para la Docencia y la Investigación - Repositorio Institucional de la Universidad del País Vasco (3)
- B-Digital - Universidade Fernando Pessoa - Portugal (5)
- Biblioteca Digital da Câmara dos Deputados (15)
- Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (BDPI/USP) (5)
- Biblioteca Digital de la Universidad Católica Argentina (4)
- Biblioteca Digital de Teses e Dissertações Eletrônicas da UERJ (40)
- Bibloteca do Senado Federal do Brasil (19)
- Boston University Digital Common (1)
- Brock University, Canada (41)
- Cámara de Comercio de Bogotá, Colombia (49)
- Cambridge University Engineering Department Publications Database (6)
- CentAUR: Central Archive University of Reading - UK (7)
- Center for Jewish History Digital Collections (3)
- Chinese Academy of Sciences Institutional Repositories Grid Portal (107)
- Cochin University of Science & Technology (CUSAT), India (1)
- Cornell: DigitalCommons@ILR (1)
- CUNY Academic Works (1)
- DI-fusion - The institutional repository of Université Libre de Bruxelles (1)
- Diposit Digital de la UB - Universidade de Barcelona (1)
- Doria (National Library of Finland DSpace Services) - National Library of Finland, Finland (1)
- Duke University (1)
- eResearch Archive - Queensland Department of Agriculture; Fisheries and Forestry (2)
- Gallica, Bibliotheque Numerique - Bibliothèque nationale de France (French National Library) (BnF), France (104)
- Greenwich Academic Literature Archive - UK (1)
- Helda - Digital Repository of University of Helsinki (58)
- Indian Institute of Science - Bangalore - Índia (11)
- Infoteca EMBRAPA (4)
- Instituto Politécnico do Porto, Portugal (6)
- Lume - Repositório Digital da Universidade Federal do Rio Grande do Sul (28)
- Massachusetts Institute of Technology (2)
- Ministerio de Cultura, Spain (18)
- Plymouth Marine Science Electronic Archive (PlyMSEA) (5)
- Portal de Revistas Científicas Complutenses - Espanha (1)
- Publishing Network for Geoscientific & Environmental Data (16)
- QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (29)
- Queensland University of Technology - ePrints Archive (16)
- ReCiL - Repositório Científico Lusófona - Grupo Lusófona, Portugal (11)
- Repositório Alice (Acesso Livre à Informação Científica da Embrapa / Repository Open Access to Scientific Information from Embrapa) (1)
- Repositório Científico da Universidade de Évora - Portugal (2)
- Repositório Científico do Instituto Politécnico de Lisboa - Portugal (1)
- Repositório Científico do Instituto Politécnico de Santarém - Portugal (1)
- Repositório digital da Fundação Getúlio Vargas - FGV (23)
- Repositório Digital da Universidade Municipal de São Caetano do Sul - USCS (2)
- REPOSITORIO DIGITAL IMARPE - INSTITUTO DEL MAR DEL PERÚ, Peru (1)
- Repositório do Centro Hospitalar de Lisboa Central, EPE - Centro Hospitalar de Lisboa Central, EPE, Portugal (1)
- Repositório Institucional da Universidade de Aveiro - Portugal (8)
- Repositório Institucional da Universidade Estadual de São Paulo - UNESP (1)
- Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho" (2)
- RUN (Repositório da Universidade Nova de Lisboa) - FCT (Faculdade de Cienecias e Technologia), Universidade Nova de Lisboa (UNL), Portugal (15)
- SAPIENTIA - Universidade do Algarve - Portugal (9)
- School of Medicine, Washington University, United States (15)
- South Carolina State Documents Depository (8)
- Universidad Autónoma de Nuevo León, Mexico (17)
- Universidad del Rosario, Colombia (65)
- Universidad Politécnica Salesiana Ecuador (1)
- Universidade de Lisboa - Repositório Aberto (4)
- Universidade dos Açores - Portugal (1)
- Universitat de Girona, Spain (2)
- Universitätsbibliothek Kassel, Universität Kassel, Germany (4)
- Université de Montréal, Canada (2)
- University of Southampton, United Kingdom (1)
- University of Washington (2)
Resumo:
An amorphous silicon carbonitride (Si1-x-yCxN y, x = 0:43, y = 0:31) coating was deposited on polyimide substrate using the magnetron-sputtering method. Exposure tests of the coated polyimide in atomic oxygen beam and vacuum ultraviolet radiation were performed in a ground-based simulator. Erosion kinetics measurements indicated that the erosion yield of the Si0.26C0.43N0.31 coating was about 1.5x and 1.8 × 10-26 cm3 /atom during exposure in single atomic oxygen beam, simultaneous atomic oxygen beam, and vacuum ultraviolet radiation, respectively. These values were 2 orders of magnitude lower than that of bare polyimide substrate. Scanning electron and atomic force microscopy, X-ray photoelectron spectrometer, and Fourier transformed infrared spectroscopy investigation indicated that during exposures, an oxide-rich layer composed of SiO2 and minor Si-C-O formed on the surface of the Si 0.26C0.43N0.31 coating, which was the main reason for the excellent resistance to the attacks of atomic oxygen. Moreover, vacuum ultraviolet radiation could promote the breakage of chemical bonds with low binding energy, such as C-N, C = N, and C-C, and enhance atomic oxygen erosion rate slightly.