Effect of TiB2 Additives on Wear Behavior of NiCrBSi-Based Plasma-Sprayed Coatings

Authors

  • Oleksandr UMANSKYI Frantzevich Institute for Problems of Material Science
  • Maryna STOROZHENKO Kyiv National Aviation University
  • Irina HUSSAINOVA
  • Oleksandr TERENTJEV
  • Andrey KOVALCHENKO
  • Maksim ANTONOV

DOI:

https://doi.org/10.5755/j01.ms.22.1.7307

Keywords:

self-fluxing alloy, titanium diboride, plasma-sprayed coating, wear resistance

Abstract

The influence of titanium diboride additives on microstructure and wear-resistance of NiCrBSi thermally sprayed coatings deposited on a steel substrate has been studied. NiCrBSi-based composite powders with 10, 20, 40 wt.% TiB2 particles content were produced. The structure of NiCrSiB-TiB2 coatings consists of TiB2 and CrB grains distributed in Ni-based matrix. The wear-resistance of NiCrSiB-TiB2 plasma sprayed coatings in dry sliding conditions against the same coating using pin-on-disk tester. It was determined that the amount of titanium diboride particles in  NiCrBSi-based coatings influences essentially on the wear  resistance and wear mechanism. The NiCrBSi-based plasma sprayed coatings containing 20 wt. % of TiB2 possess the highest wear resistance due to the realization of mechano-oxidational wear mechanism.

DOI: http://dx.doi.org/10.5755/j01.ms.22.1.7307

Author Biographies

  • Oleksandr UMANSKYI, Frantzevich Institute for Problems of Material Science
    Professor, Chief of  Material Science and Surface Engineering Department
  • Maryna STOROZHENKO, Kyiv National Aviation University
    PhD, associate professor of Airport Technologies Department,
    Airspace Institute of National Aviation University

Downloads

Published

2016-01-20

Issue

Vol. 22 No. 1 (2016)

Section

METALS, ALLOYS, COATINGS

License

 

The copyrights for articles in this journal are retained by the author(s), with first publication rights granted to the journal. By virtue of their appearance in this open-access journal, articles are free to use with proper attribution in educational and other non-commercial settings.