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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

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LIQUID JET AND PLASMA JET INTERACTION: A FIRST STEP IN THE STUDY OF FINE STRUCTURED COATINGS ELABORATION

巻 14, 発行 4, 2010, pp. 333-340
DOI: 10.1615/HighTempMatProc.v14.i4.30
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要約

Classical plasma spraying is nowadays industrially used to achieve thick layers, up to few millimeters, of a wide range of materials. However, new applications, such as solid oxide fuel cells require fine structured layers or very thin coatings, which can't be achieved by classical plasma spraying. Actually, ultrafine powders (d < 5μm) can't penetrate inside the plasma jet, the carrier gas being unable to give enough momentum to very small particles, without perturbing drastically the plasma jet. This paper presents a new process using a d. c. plasma torch where a liquid precursor is injected in order to obtain layers which thickness is between l00nm and 10μm together with a fine structure involving grains of about 1μm and below. That precursor consists of ceramic particles in suspension in a carrier liquid. The presented work is a first step of the spraying process elaboration. It is devoted to the study of the liquid injection in the plasma jet. Firstly, a liquid injector was designed and characterized in order to produce liquid droplets penetrating into the plasma core. Secondly, the interaction between the liquid and the plasma was studied through the injection process. For such an investigation, an emission spectroscopy system was used to determine the plasma temperature together with its composition, with and without water injection.

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