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

Publication de 4  numéros par an

ISSN Imprimer: 1093-3611

ISSN En ligne: 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

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A FLEXIBLE LOW PRESSURE PLASMA PROCESS FOR THE DEPOSITION OF COMPLEX THICK OXIDE COATINGS

Volume 13, Numéro 3-4, 2009, pp. 381-398
DOI: 10.1615/HighTempMatProc.v13.i3-4.110
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RÉSUMÉ

The deposition of complex oxide layers for Solid Oxide Fuel Cell membranes (SOFC) or Thermal Barrier Coating (TBC) in gas turbines is a current subject of investigation. A low pressure plasma reactor was developed to very quickly and easily deposit thick oxide coatings presenting various compositions. The reactor is equipped with an injection system which enables the introduction of nitrate salts dissolved in aqueous solution under a spray form into the reactor. The velocity and the diameter of the droplets of the spray were measured on line by using a particle dynamics analyser coupled with the plasma reactor. Droplet velocity of more than 30 m. s−1 was measured at the exit of the nozzle. Optical emission spectroscopy showed that the high vaporization of water from droplets observed by the particle dynamic analyser was a favorable feature for the production of OH° radicals due to the dissociation of H2O in the discharge. Infrared spectroscopy confirmed that O and OH° were responsible for the transformation of nitrates into solid oxide at low temperature. The morphologies of ZrO2-Y2O3 coatings (YSZ 4% mol of Y) and Ba3MgTa2O9 for TBC application obtained after optimizing plasma parameters have been characterized by scanning electron microscopy.

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