Autors: Kandeva, M. K., Zadorozhnaya, E., Kalitchin, Zh., Svoboda, P.
Title: Tribological Studies Of High Velocity Oxy-Fuel (HVOF) Superalloy Coatings
Keywords: HVOF coatings, tribology, abrasive wear

Abstract: High technology coatings layers from super alloys hardfaced by HVOF technology have very high wear resistance in extreme working conditions – adhesion, abrasion, corrosion cavitaion and vibrations. In the present work investigations have been carried out in wear of coating layers formed by HVOF in the conditions of dry friction on abrasive surface. The total number of studied samples is 12 powder compositions coated on nickel matrix (502P, 602P, 80M60) and tungsten matrix (6P50W, SX199, WC-12Co) at one and the same temperature of hardfacing. Form each of the powder are obtained coatings without preliminary heating and with preliminary heating of the substrate in a chamber at 650oC. New and interesting results are presented of the wear characteristics and the loads plus the friction path. The influence of the preliminary heating on the wear rate and the relative wear resistance and also the connection between abrasive wear and the hardface of the coatings.

References

    Issue

    Journal of the Balkan Tribological Association, vol. 24, issue 3, pp. 411-428, 2018, Bulgaria, SciBulCom Ltd., ISBN ISSN: 1310-4772

    Full text of the publication

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    Вид: публикация в международен форум, публикация в издание с импакт фактор, индексирана в Scopus и Web of Science