Synthesis and Microstructure of Iridium Coatings on Carbon Fibers Full article
Journal |
Carbon
ISSN: 0008-6223 , E-ISSN: 1873-3891 |
||||||||
---|---|---|---|---|---|---|---|---|---|
Output data | Year: 2013, Volume: 56, Pages: 243-254 Pages count : 12 DOI: 10.1016/j.carbon.2013.01.006 | ||||||||
Tags | Atomic force microscopy; Carbon fibers; Chemical bonds; Coatings; Extended X ray absorption fine structure spectroscopy; Metallorganic chemical vapor deposition; Microstructure; Model structures; Van der Waals forces; X ray diffraction | ||||||||
Authors |
|
||||||||
Affiliations |
|
Funding (3)
1 | The Ministry of Education and Science of the Russian Federation | 14.518.11.7022 |
2 | Russian Foundation for Basic Research | 12-03-01039 (01201258422) |
3 | Russian Foundation for Basic Research | 12-03-01154 |
Abstract:
Uniform, adherent, and non-bridging iridium coatings were applied to polyacrylonitrile-derived (ex-PAN) carbon fibers using low temperature metal organic chemical vapor deposition (MOCVD) from iridium (III) acetylacetonate. Composition, morphology, texture and topography of the iridium coated carbon fibers depending on MOCVD parameters have been studied by scanning electron microscopy/energy dispersive spectroscopy, atomic force microscopy, X-ray diffraction and extended X-ray absorption fine structure (EXAFS). For the MOCVD parameters studied, metallic iridium is the main phase of the coating. Together with iridium, a carbon-containing phase can be also present in the coating. The interatomic distances, corresponded coordination numbers and structural/microstructural parameters were established. The dependence of the microstructure of the Ir-coated carbon fibers on MOCVD parameters and possible structural models are discussed in detail. EXAFS showed that the Ir–O chemical bond on the boundary between the carbon fiber and the iridium coating is either absent or its contribution is too small to be detected by this method. Iridium appears to be bound to carbon fiber only by van der Waals forces. The data obtained by all methods are in a good agreement.
Cite:
Baklanova N.I.
, Morozova N.B.
, Kriventsov V.V.
, Titov A.T.
Synthesis and Microstructure of Iridium Coatings on Carbon Fibers
Carbon. 2013. V.56. P.243-254. DOI: 10.1016/j.carbon.2013.01.006 WOS Scopus РИНЦ
Synthesis and Microstructure of Iridium Coatings on Carbon Fibers
Carbon. 2013. V.56. P.243-254. DOI: 10.1016/j.carbon.2013.01.006 WOS Scopus РИНЦ
Dates:
Submitted: | Nov 2, 2012 |
Accepted: | Jan 6, 2013 |
Published online: | Jan 15, 2013 |
Published print: | May 1, 2013 |
Identifiers:
Web of science | WOS:000317700200029 |
Scopus | 2-s2.0-84875221720 |
Elibrary | 20438832 |
Chemical Abstracts | 2013:172213 |
Chemical Abstracts (print) | 158:425513 |
OpenAlex | W2026762525 |