Publication detail

Tribological studies of high velocity oxy-fuel (HVOF) superalloy coatings

KANDEVA, M. ZADOROZHNAYA, E. KALITCHIN, ZH. SVOBODA, P.

Original Title

Tribological studies of high velocity oxy-fuel (HVOF) superalloy coatings

Type

journal article - other

Language

English

Original Abstract

High technology coatings layers on super alloys hardfaced by HVOF technology have very high wear resistance under extreme working conditions - adhesion, abrasion, corrosion cavitaion and vibrations. In the present work investigations have been carried out on wear of coating layers formed by HVOF under 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. From each of the powders are obtained coatings without preliminary heating and with preliminary heating of the substrate in a chamber at 650oC. New and interesting results are presented on 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 is tested and also the connection between abrasive wear and the hardface of the coatings.

Keywords

HVOF coatings, tribology, wearing off

Authors

KANDEVA, M.; ZADOROZHNAYA, E.; KALITCHIN, ZH.; SVOBODA, P.

Released

30. 10. 2018

Publisher

Scibulcom Ltd.

ISBN

1310-4772

Periodical

Journal of the Balkan Tribological Association

Year of study

24

Number

3

State

Republic of Bulgaria

Pages from

411

Pages to

428

Pages count

18

BibTex

@article{BUT150750,
  author="KANDEVA, M. and ZADOROZHNAYA, E. and KALITCHIN, ZH. and SVOBODA, P.",
  title="Tribological studies of high velocity oxy-fuel (HVOF) superalloy coatings",
  journal="Journal of the Balkan Tribological Association",
  year="2018",
  volume="24",
  number="3",
  pages="411--428",
  issn="1310-4772"
}