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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

年間 4 号発行

ISSN 印刷: 1093-3611

ISSN オンライン: 1940-4360

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 0.4 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.1 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00005 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.07 SJR: 0.198 SNIP: 0.48 CiteScore™:: 1.1 H-Index: 20

Indexed in

Alumina coatings from aluminium electrodeposited in molten salts

巻 5, 発行 4, 2001, 20 pages
DOI: 10.1615/HighTempMatProc.v5.i4.100
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要約

In this study, a new process has been performed to generate a ceramic alumina coating on a metallic surface with the purpose of improving its mechanical and corrosion resistance at high temperatures.
The alumina coating was obtained by dry oxidation of an aluminium layer which had been deposited on the metallic substrate (i.e.: structural steel) by electrolysis from a molten salts bath.
The used electrolytic melt was a ternary mixture AlCl3-NaCl-KCl heated at a temperature below 200°C. The oxidising operation was a thermal treatment carried out under a dry oxygen atmosphere at a temperature of 550°C.
This double procedure was original because it created alumina coatings strongly linked to their substrates in contrast to the coatings obtained by classical deposition processes like sputtering, physical vapour deposition or chemical vapour deposition.
This strong bonding was due to a diffusion phenomenon between aluminium and iron which occurs by cathodic aluminium electrodeposition The electrolytic conditions of deposition on steel were responsible for the structure of the coating and for the formation of the interdiffusion layer Al-Fe. The presence of this layer was proved by GDL-OES (glow discharge luminescence-optical emission spectroscopy) analysis.

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