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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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INFLUENCE OF VOLTAGE FLUCTUATIONS RELATED TO PLASMA TORCH WORKING CONDITIONS ON ZIRCONIA PARTICLE THERMAL TREATMENT

Volume 11, Numéro 2, 2007, pp. 161-174
DOI: 10.1615/HighTempMatProc.v11.i2.10
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RÉSUMÉ

The microstructure of plasma sprayed coatings is strongly linked to particle trajectories depending among other parameters on arc root fluctuations. The latters depend on the torch anode-nozzle shape and internal diameter, the plasma forming gas composition and flow rate, and the anode erosion.
Experiments were performed with yttria partially stabilized zirconia (8 wt% yttria) particles with a size distribution between 5 to 25 μm and either a PTF4 or a 3MB GE Sulzer-Metco torch. The PTF4 torch was fed with an Ar-Mb mixture and an arc current of 600 A, while the 3MB torch was fed with N2-H2 mixture with an arc current of 500 A. Particle mean temperatures and mean velocities were measured to evaluate the influence of voltage fluctuations on the treatment.
This study shows that the torch working parameters, except the arc current, have nearly the same effects on the arc voltage fluctuations for the both torches. The 3MB torch voltage fluctuations are more important than those for a PTF4 torch, but they are less affected by the variations of spray parameters. Furthermore, the fluctuations of particle temperatures and velocities versus the voltage fluctuations are not the same.

CITÉ PAR
  1. Goutier S., Noguès-Delbos E., Vardelle M., Fauchais P., Particle Temperature Fluctuations in Plasma Spraying, Journal of Thermal Spray Technology, 17, 5-6, 2008. Crossref

  2. Wu Chengkang, Pan Wenxia, Unsteadiness in non-transferred dc arc plasma generators, Theoretical and Applied Mechanics Letters, 1, 2, 2011. Crossref

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