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Plasma diagnostic and microstructural study of WCN coatings growth by pulsed vacuum arc discharge
Author(s) -
RestrepoParra Elisabeth,
Escobar Daniel,
Ospina Rogelio,
Quintero Jorge Hernán,
Londoño Ricardo M.
Publication year - 2018
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/ctpp.201600062
Subject(s) - materials science , plasma , tungsten carbide , tungsten , electric arc , argon , nitride , analytical chemistry (journal) , electron temperature , spectroscopy , plasma arc welding , laser induced breakdown spectroscopy , plasma diagnostics , emission spectrum , atomic physics , spectral line , composite material , metallurgy , electrode , chemistry , physics , quantum mechanics , layer (electronics) , chromatography , welding , astronomy
In this work, we present a study of the plasma evolution during tungsten carbon nitride (WCN) coatings production using the repetitive pulsed arc technique. For the coatings production, a tungsten carbide (WC) target, and a mixture of argon and nitrogen as the filled gas were used. The study was carried out for discharges generated with one, two, three, and four pulses. The WCN coatings were characterized by X‐ray diffraction (XRD) to identify the phases present in this material. The plasma was experimentally studied by optical emission spectroscopy (OES). A correlation was found between the spectral lines behavior and the material composition evolution. As the number of pulses increased, the intensity of the spectral lines also increased, especially in the case of the atomic lines of nitrogen, NI. The results were analysed to obtain information regarding the reactions in the plasma, as well as the electron temperature and density.