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

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

Research output: Contribution to journalArticlepeer-review

17 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 languageEnglish (US)
Pages (from-to)829-839
Number of pages11
JournalMaterials and Manufacturing Processes
Volume13
Issue number6
DOIs
StatePublished - 1998

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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