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1. Identity statement
Reference TypeConference Paper (Conference Proceedings)
Sitemtc-m21c.sid.inpe.br
Holder Codeisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identifier8JMKD3MGP3W34R/3TC2LTB
Repositorysid.inpe.br/mtc-m21c/2019/05.24.14.03
Metadata Repositorysid.inpe.br/mtc-m21c/2019/05.24.14.03.19
Metadata Last Update2020:01.06.11.42.14 (UTC) administrator
Secondary KeyINPE--PRE/
Citation KeyTrava-AiroldiNaCoFuRaCa:2019:InArIg
TitleInfluence of the argon as an ignitor and an agent on DLC properties growth at pressure as low as 3 x 10-4 mbar by modified pulsed-DC PECVD method
Year2019
Access Date2024, May 28
Secondary TypePRE CI
2. Context
Author1 Trava-Airoldi, Vladimir Jesus
2 Nass, Karina Carvalho de Farias
3 Corat, Evaldo José
4 Fukumasu, N.
5 Ramirez, M.
6 Capote, G.
Resume Identifier1
2
3 8JMKD3MGP5W/3C9JH33
Group1 LABAS-COCTE-INPE-MCTIC-GOV-BR
2 LABAS-COCTE-INPE-MCTIC-GOV-BR
3 LABAS-COCTE-INPE-MCTIC-GOV-BR
Affiliation1 Instituto Nacional de Pesquisas Espaciais (INPE)
2 Instituto Nacional de Pesquisas Espaciais (INPE)
3 Instituto Nacional de Pesquisas Espaciais (INPE)
4 Universidade de São Paulo (USP)
5 Universidade do Vale do Paraíba (UNIVAP)
6 Universida Nacional de Bogota
Author e-Mail Address1 vladimir.airoldi@inpe.br
2 karina.nass@inpe.br
3 evaldo.corat@inpe.br
Conference NameInternational Conference on Metallurgical Coatings and Thin Films (ICMCTF), 46
Conference LocationSan Diego, CA
Date19-24 May
History (UTC)2019-05-24 14:16:23 :: simone -> administrator :: 2019
2020-01-06 11:42:14 :: administrator -> simone :: 2019
3. Content and structure
Is the master or a copy?is the master
Content Stagecompleted
Transferable1
Content TypeExternal Contribution
KeywordsDLC films
DC pulsed PECVD
additional cathode
argon ignitor
mechanical and trybological properties
AbstractAs reported for many years, hydrogenated DLC films (a-C:H) have been a choice of a protective coatings for many applications due to their set of superior mechanical, chemical, tribological and biological properties such as: high hardness, high wear resistance, low coefficient of friction, high chemical inertness, good biocompatibility, bactericide, etc.. However, in order to improve the adhesion between the DLC and the different metals substrates a huge modification of a Pulsed DC PECVD technique has been obtained introducing an additional cathode working as electron and ion confinement. With these modifications pressure as low as 10-3 mbar allow operating in collisionless regime improving not only the adhesion but also a set of DLC proprieties cited above. So, in this work we present studies concerning more improvement properties of the DLC films as a function of confinement of electrons and ions parameters in a plasma discharge by using argon as an ignitor gas for the interlayer precursor and keeping it during all the process of DLC deposition. In this case the best conditions of collisonless operation was reached at pressure as low as 3.10-4 mbar. Basically, due to the condition of operating in very low pressure, this technique allows to grow the DLC film with very good uniformity and higher hardness, higher adhesion, lower coefficient of friction, less porosity and, also, provide to be able to get a DLC deposition in the form of multilayer, like thicker films, promoting less residual stress. So, studies at the first time, of DLC with superior properties has been carried out from PECVD technique. More specifically, studies of the DLC film properties as a function of the argon buffer gas density and as a function of bias voltage has been done. Raman scattering spectroscopy, Rockwell indentation, nano indentation, FEG, and trybological analyses are discussed. Also, the operating parameters of this modified PECVD system are well controlled, so that a scaling up studies will also be presented as an important part of this work.
AreaFISMAT
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Languageen
User Groupsimone
Reader Groupadministrator
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Visibilityshown
Update Permissionnot transferred
5. Allied materials
Next Higher Units8JMKD3MGPCW/3ESR3H2
Host Collectionurlib.net/www/2017/11.22.19.04
6. Notes
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