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HomeMaterials Science ForumMaterials Science Forum Vol. 751Erosion Characteristics of HVOF Developed...

Erosion Characteristics of HVOF Developed Cr₃C₂-NiCr and WC-Co Coatings

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Abstract:

Erosion behavior of the high velocity oxy fuel (HVOF) deposited Cr₃C₂-NiCr and WC-Co coatings on boiler tube steels was evaluated. The solid particle erosion study was conducted, using an air jet erosion test rig at a velocity of 26 m/s and impingement angles of 30⁰ and 90⁰, on uncoated as well as HVOF spray coated boiler tube steels at 250°C. The coatings are significantly harder than the substrate steel and less porous. Scanning electron microscopy (SEM) technique was used to analyze the eroded surface. Mass loss of the coatings was found higher than the boiler tube steel.

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Periodical:

Materials Science Forum (Volume 751)

Pages:

71-79

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.751.71

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Online since:

March 2013

Authors:

Hazoor Singh, Buta Singh Sidhu

Keywords:

Erosion, HVOF Coating, Scanning Electron Microscope (SEM)

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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