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Room temperature and 600 °C erosion behaviour of various chromium carbide composite coatings
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- Venkatesh, Lakshmi Narayanan (author)
- International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), Balapur, Hyderabad 500005, India; Department of Metallurgical Engineering & Materials Science, IIT Bombay, Powai, Mumbai 400076, India
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- Venkataraman, B. (author)
- Defence Metallurgical Research Laboratory (DMRL), Kanchanbagh, Hyderabad 500058, India
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- Tak, Manish (author)
- International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), Balapur, Hyderabad 500005, India
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- (creator_code:org_t)
- Elsevier BV, 2019
- 2019
- English.
- In: Wear. - : Elsevier BV. - 0043-1648 .- 1873-2577. ; 422-423, s. 44-53
- Journal article (peer-reviewed)
Abstract
Subject headings
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- In this study, the erosion behaviour of laser clad chromium carbide-Ni rich alloy composite coatings with a wide range of carbide contents at room temperature and 600 °C were investigated. The variation in carbide content of the coatings was due to dilution from the substrate and the high cooling rate in the laser cladding process preventing re-solidification of the molten carbides. Erosion rate was observed to be a function of carbide content alone and was significantly higher at 600 °C as compared to room temperature. Erosion wear ratio (E90/E30) was also dependent on carbide content but decreased at higher temperature and higher carbide contents. A comparison of erosion behaviour with detonation and plasma sprayed counterparts showed the superior performance of laser clad coatings at 600 °C. The poor erosion performance of the detonation and plasma sprayed coatings was due to weak splat bonding. Thick oxide layer formed on the steel substrate after pre-oxidation resulted in its poor erosion performance.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Bearbetnings-, yt- och fogningsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Manufacturing, Surface and Joining Technology (hsv//eng)
Keyword
- Laser processing
- Thermal spray coatings
- Solid particle erosion
- Metal matrix composites
- Hardness
- Manufacturing and materials engineering
- Produktions- och materialteknik
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- ref (subject category)
- art (subject category)
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