Microstructure and Wear Behavior of MMC Coatings Deposited by Plasma Transferred Arc Welding and Thermal Flame Spraying Processes

In this study, two erosion protection MMC coatings with WC particles were deposited by the plasma transferred arc (PTA) welding. One of the coatings with tungsten carbide WC in the NiBSi matrix (WC/NiBSi), and the second coating WC in NiCrBSi matrix (WC/NiCrBSi) was deposited by the flame spray proc...

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Bibliographic Details
Published in:Transactions of the Indian Institute of Metals 2020, Vol.73 (1), p.259-271
Main Authors: Maslarevic, A., Bakic, G. M., Djukic, M. B., Rajicic, B., Maksimovic, V., Pavkov, V.
Format: Article
Language:English
Subjects:
Arc deposition
Arc spraying
Chemistry and Materials Science
Corrosion and Coatings
Diamond pyramid hardness
Electron microscopes
Flame spraying
Materials Science
Metallic Materials
Microstructure
Particle impact
Plasma arc welding
Protective coatings
Substrates
Technical Paper
Tribology
Tungsten carbide
Wear
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Summary:In this study, two erosion protection MMC coatings with WC particles were deposited by the plasma transferred arc (PTA) welding. One of the coatings with tungsten carbide WC in the NiBSi matrix (WC/NiBSi), and the second coating WC in NiCrBSi matrix (WC/NiCrBSi) was deposited by the flame spray process on the same substrate material S235JR steel. Experiments were performed using a gas blast sand erosion test facility with high-velocity erodent particles impact (approximately 100 m/s) at different particle impact angles (20°–45°), with an objective to study erosion wear characteristics and mass loss of two MMC coatings. Microstructural characterization of MMC coatings was done by scanning electron microscope equipped with energy-dispersive X-ray spectroscopy, whereas X-ray diffraction analysis was used for identification of present phases. The hardness of coatings was determined by Vickers hardness measurements. WC/NiBSi obtained by the PTA process shows superior hardness and erosion properties.
ISSN:0972-2815
0975-1645
DOI:10.1007/s12666-019-01831-9