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

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ISSN Печать: 1093-3611

ISSN Онлайн: 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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TRANSPORT AND CHEMICAL RATE PHENOMENA IN PLASMA SPRAYS

Том 1, Выпуск 3, 1997, pp. 295-313
DOI: 10.1615/HighTempMatProc.v1.i3.20
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Краткое описание

This paper is focused on the understanding of plasma-particle and particle-substrate interactions during plasma spraying. Rough estimates by using averaged values of the appropriate transport properties make it possible to determine the relative magnitudes of heat transfer, evaporation, mass transfer and chemical reaction when 30 μm iron particles are entrained in a plasma jet, operating in ambient atmosphere.
When particles impinge on the substrate, they undergo severe deformation and rapid cooling. Particle spreading and morphology changes as well as solidification rate, control the nature of the particle-substrate interactions and thus the coating microstructure. The temperature of the substrate surface plays a major role in splat formation and splat shape. It is postulated that maintaining the substrate medium above a certain "transition" temperature ensures that the splat during formation remains in the liquid phase. When the substrate is below this temperature, the droplet begins to freeze after impact, part of the liquid mass splinters away and spreading of the droplet away from the point of impact is irregular. After impact of a metal droplet with the substrate, the principal mode of oxidation is by gas-solid reaction which follows a parabolic diffusion law.

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