Obtaining superhard coatings of cubic tungsten carbide under high-speed plasma spraying

Alexander Sivkov, Artur Nassyrbayev, Dmitriy Nikitin, Alexander Tsimmerman, Yuliya Vympina, Iliyas Rahmatullin, Natalya Shanenkova

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Cubic tungsten carbide WCl-x is one of the most poorly studied phases of the W-C system due to the difficulty of obtaining WCl-xby most known methods and its instability under heating. This makes it difficult to obtain WCl-xin bulk form and measure its physical and mechanical properties. In this work, cubic tungsten carbide was synthesized in the form of a coating by the plasma dynamic method. The process was implemented under highspeed spraying of an electric discharge W-C plasma on copper and titanium substrates. As a result, the coating has a sandwich structure Cu-WC1-x-Cutsubstratc) or (TiC+WCl-x)-Ti- (WCl-x+TiC)-Ti(substrate) with a thickness of the WCl-xlayer up to 10 μm, Direct measurements of WCl-xmechanical properties were carried out for the first time. The maximum values of nanohardness and Young's modulus of the WCl-xlayer are Hv = 31.0±0.8 and E = 310±12 GPa respectively.

Original languageEnglish
Title of host publicationProceedings - 2020 7th International Congress on Energy Fluxes and Radiation Effects, EFRE 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages831-835
Number of pages5
ISBN (Electronic)9781728126869
DOIs
Publication statusPublished - 14 Sep 2020
Event7th International Congress on Energy Fluxes and Radiation Effects, EFRE 2020 - Virtual, Tomsk, Russian Federation
Duration: 14 Sep 202026 Sep 2020

Publication series

NameProceedings - 2020 7th International Congress on Energy Fluxes and Radiation Effects, EFRE 2020

Conference

Conference7th International Congress on Energy Fluxes and Radiation Effects, EFRE 2020
CountryRussian Federation
CityVirtual, Tomsk
Period14.9.2026.9.20

Keywords

  • Cubic tungsten carbide
  • Electric discharge plasma
  • High-speed spraying
  • Plasma dynamic synthesis

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology

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