Obtaining Metal-Ceramic Layers by Laser Cladding using Alumina Powder Mixtures

  • S. Mihai National Institute for Laser, Plasma and Radiation Physics, Center for Advanced Laser Technologies, Ilfov, Romania
  • D. Chioibasu National Institute for Laser, Plasma and Radiation Physics, Center for Advanced Laser Technologies, Ilfov, Romania
  • A. C. Popescu National Institute for Laser, Plasma and Radiation Physics, Center for Advanced Laser Technologies, Ilfov, Romania
  • S. Craciun National University of Science and Technology POLITEHNICA Bucharest, Faculty of Industrial Engineering and Robotics, Bucharest, Romania
  • V. Geanta National University of Science and Technology POLITEHNICA Bucharest, Faculty of Science and Engineering of Materials, Bucharest, Romania
  • R. Stefanoiu National University of Science and Technology POLITEHNICA Bucharest, Faculty of Science and Engineering of Materials, Bucharest, Romania
  • I. Voiculescu National University of Science and Technology POLITEHNICA Bucharest, Faculty of Industrial Engineering and Robotics, Bucharest, Romania
DOI: https://doi.org/10.35219/awet.2024.02
Keywords: Laser cladding, ceramic, alumina, powder mixtures, microstructure

Abstract

This paper presents a comparative analysis of the metal-ceramic powders mixtures behaviour deposited onto 304 stainless steel (SS304) substrate by laser procedure. Using Inconel 718 (In718) alloy as a matrix material that has a lower melting range in comparison with the austenitic stainless steel, a more reduced overheating phenomenon of the cladding layer has been achieved for the same values ​​of the laser deposition parameters. On the other hand, due to the greater fluidity of the In718 alloy, comparing to the SS304 material, an increase of the cladded layer width has been observed at the macro and microstructure analysis. Moreover, an improvement of the adhesion phenomenon between the cladded layer and the substrate was found when spherical alumina (Al2O3) particles have been used. The comparative analysis of the results in case of metal matrix composite (MMC), which was developed by mixing different percentages of Al2O3, SS304 or In718, has revealed that the laser power of 500W and cladding speed of 10mm/s are the optimal process parameters.

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Published
2024-12-13
How to Cite
Issue
Vol 35 (2024)
Section
Articles

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