Advertisement

Journal of Materials Science

, Volume 26, Issue 4, pp 951–956 | Cite as

Laser cladding of zirconium on magnesium for improved corrosion properties

  • R. Subramanian
  • S. Sircar
  • J. Mazumder
Papers

Abstract

Laser cladding of Mg-2 wt% Zr, and Mg-5wt% Zr powder mixture onto magnesium was carried out. The microstructure of the laser clad was studied. From the microstructural study, the epitaxial regrowth of the clad region on the underlying substrate was observed. Martensite plates of different size were observed in transmission electron microscope for Mg-2wt% Zr and Mg-5wt% Zr laser clad. The corrosion properties of the laser clad were evaluated in sea-water (3.5% NaCl). The position of the laser claddings in the galvanic series of metals in sea-water, the anodic polarization characteristics of the laser claddings and the protective nature and the stability of the passivating film formed have been determined. The formation of pitting on the surface of the laser clad subjected to corrosion has been reported. The corrosion properties of the laser claddings have been compared with that of the commercially used magnesium alloy AZ91 B.

Keywords

Zirconium Martensite Magnesium Alloy Powder Mixture Passivating Film 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    S. K. Das andC. F. Chang, “Rapidly Solidified Crystalline Alloys”, edited by S. K. Daset al., (The Metals Society of AIME, Warrendale, PA, 1985) pp. 137–156.Google Scholar
  2. 2.
    C. F. Chang, S. K. Das, andD. Raybould, “Rapidly Solidified Materials”, edited by P. W. Lee, R. S. Carbonara (American Society for Metals, Metals Park, OH, 1986) pp. 129–135.Google Scholar
  3. 3.
    C. F. Chang, S. K. Das, D. Raybould andA. Brown,Met. Powd. Rep. 41 (1986) pp. 302–308.Google Scholar
  4. 4.
    F. Hehmann andH. Jones,Proceedings of London Conference (Institute of Metals, November 1980) pp. 83–96.Google Scholar
  5. 5.
    T. Z. Kattamis, in “Lasers in Metallurgy”, edited by K. Mukherjee and J. Mazumder (The Metals Society of AIME, Warrendale, PA, 1981) pp. 1–10.Google Scholar
  6. 6.
    R. K. H. Kalimullin andYu. Ya. Kozhenvnikov,Met. Sci. Heat Treatment 27 (1985) 272–274.CrossRefGoogle Scholar

Copyright information

© Chapman and Hall Ltd 1990

Authors and Affiliations

  • R. Subramanian
    • 1
  • S. Sircar
    • 1
  • J. Mazumder
    • 1
  1. 1.Laser Aided Materials Processing Laboratory, Department of Mechanical and Industrial EngineeringUniversity of Illinois at Urbana-ChampaignUrbanaUSA

Personalised recommendations