Laser glazing of plasma sprayed Ni-Cr-Al-Y alloy

T. A. Mahank; J. Singh; A. K. Kulkarni

doi:10.1080/10426919808935308

Laser glazing of plasma sprayed Ni-Cr-Al-Y alloy

T. A. Mahank, J. Singh, A. K. Kulkarni

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

Laser surface melting provides a unique opportunity to increase the density of the relatively porous microstructure found in plasma sprayed (PS) coatings. In the current investigation a plasma sprayed Ni-Cr-Al-Y alloy was surface melted using a CO₂ laser. Melted track width was found to be strongly influenced by laser power and weakly influenced by traverse speed over the range investigated. The microstructure of the laser glazed area was examined by various techniques including optical microscopy, scanning electron microscopy (SEM), electron probe microanalysis (EPMA), and energy dispersive x-ray analysis (EDAX). Refined microstructure was observed in the laser glazed region, and under high laser power (800 W) mixing of the coating with the substrate created metallurgical bonding.

Original language	English (US)
Pages (from-to)	829-839
Number of pages	11
Journal	Materials and Manufacturing Processes
Volume	13
Issue number	6
DOIs	https://doi.org/10.1080/10426919808935308
State	Published - 1998

All Science Journal Classification (ASJC) codes

General Materials Science
Mechanics of Materials
Mechanical Engineering
Industrial and Manufacturing Engineering

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10.1080/10426919808935308

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title = "Laser glazing of plasma sprayed Ni-Cr-Al-Y alloy",

abstract = "Laser surface melting provides a unique opportunity to increase the density of the relatively porous microstructure found in plasma sprayed (PS) coatings. In the current investigation a plasma sprayed Ni-Cr-Al-Y alloy was surface melted using a CO2 laser. Melted track width was found to be strongly influenced by laser power and weakly influenced by traverse speed over the range investigated. The microstructure of the laser glazed area was examined by various techniques including optical microscopy, scanning electron microscopy (SEM), electron probe microanalysis (EPMA), and energy dispersive x-ray analysis (EDAX). Refined microstructure was observed in the laser glazed region, and under high laser power (800 W) mixing of the coating with the substrate created metallurgical bonding.",

author = "Mahank, {T. A.} and J. Singh and Kulkarni, {A. K.}",

note = "Funding Information: The authors would like to thank the Applied Research Laboratory at The Pennsylvania State University for providing the laser facility, and the National Aeronautics and Space Administration (NASA) for providing the GSRP Fellowship supporting this work.",

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doi = "10.1080/10426919808935308",

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AU - Mahank, T. A.

AU - Singh, J.

AU - Kulkarni, A. K.

N1 - Funding Information: The authors would like to thank the Applied Research Laboratory at The Pennsylvania State University for providing the laser facility, and the National Aeronautics and Space Administration (NASA) for providing the GSRP Fellowship supporting this work.

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Y1 - 1998

N2 - Laser surface melting provides a unique opportunity to increase the density of the relatively porous microstructure found in plasma sprayed (PS) coatings. In the current investigation a plasma sprayed Ni-Cr-Al-Y alloy was surface melted using a CO2 laser. Melted track width was found to be strongly influenced by laser power and weakly influenced by traverse speed over the range investigated. The microstructure of the laser glazed area was examined by various techniques including optical microscopy, scanning electron microscopy (SEM), electron probe microanalysis (EPMA), and energy dispersive x-ray analysis (EDAX). Refined microstructure was observed in the laser glazed region, and under high laser power (800 W) mixing of the coating with the substrate created metallurgical bonding.

AB - Laser surface melting provides a unique opportunity to increase the density of the relatively porous microstructure found in plasma sprayed (PS) coatings. In the current investigation a plasma sprayed Ni-Cr-Al-Y alloy was surface melted using a CO2 laser. Melted track width was found to be strongly influenced by laser power and weakly influenced by traverse speed over the range investigated. The microstructure of the laser glazed area was examined by various techniques including optical microscopy, scanning electron microscopy (SEM), electron probe microanalysis (EPMA), and energy dispersive x-ray analysis (EDAX). Refined microstructure was observed in the laser glazed region, and under high laser power (800 W) mixing of the coating with the substrate created metallurgical bonding.

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Laser glazing of plasma sprayed Ni-Cr-Al-Y alloy

Abstract

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