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

Publicou 4 edições por ano

ISSN Imprimir: 1093-3611

ISSN On-line: 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

DYNAMICS OF PARTICLE DEFORMATION DURING PLASMA SPRAY COATING

Volume 13, Edição 3-4, 2009, pp. 247-265
DOI: 10.1615/HighTempMatProc.v13.i3-4.10
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RESUMO

Molten droplets during plasma spray process either fragment during impact or form intact, disk-like splats. Splat break-up produces coatings with low adhesion strength and high porosity. Fragmentation of splats can be caused by two entirely different mechanisms. If contact between the droplet and substrate is poor, the splat spreads into a thin sheet liquid and ruptures, producing a small central splat surrounded by a ring of debris. If contact is good and solidification is very rapid, a solid ring forms around the edges of the spreading droplet that obstructs the outward flowing liquid and destabilizes it, resulting in a splat with long peripheral fingers. If the solid layer grows by a significant amount during spreading, but not enough to destabilize the flow, it restrains the splat from spreading and becoming thin enough to rupture, and produces a disk shaped splat with no fragmentation. Numerical models of droplet impact can be used to simulate all three types of impact, with the rate of solidification varied by changing the value of thermal contact resistance between the splat and substrate. To predict which splat shape is likely for a given set of impact conditions, a dimensionless solidification parameter is defined, taking into account droplet diameter and velocity, substrate temperature, thermal contact resistance and thermo-physical properties of the splat and substrate. Examination of plasma-sprayed nickel, molybdenum, and zirconium droplets landing on glass, steel and Inconel substrates confirmed that the solidification parameter can be used to predict splat morphology.

CITADO POR
  1. Wang Langping, Jiang Wei, Yang Zhuo, Wang Xiaofeng, Lu Yang, Lv Wenquan, Joining mechanism between Al2O3–Ag–Cu–Ti composite coating and GCr15 substrate, Surface and Coatings Technology, 223, 2013. Crossref

  2. Zhang Yongang, Matthews Steven, Hyland Margaret, Role of solidification in the formation of plasma sprayed nickel splats through simulation and experimental observation, International Journal of Heat and Mass Transfer, 115, 2017. Crossref

  3. González N., Zapata J., Martínez V., Gadow R., García J., Riveiro Rodríguez Antonio, Manufacturing parameter analysis for alumina coating on steel substrate by automated image processing of isolated splats samples, PLOS ONE, 15, 10, 2020. Crossref

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