Abstract
Today, intricate problems of surface treatment can be solved through precision cladding using advanced laser technology. Metallic and carbide coatings have been produced with high-power lasers for years, and current investigations show that laser cladding is also a promising technique for the production of dense and precisely localized ceramic layers. In the present work, powders based on Al2O3 and ZrO2 were used to clad aluminum and titanium light alloys. The compact layers are up to 1 mm thick and show a nonporous cast structure as well as a homogeneous network of vertical cracks. The high adhesive strength is due to several chemical and mechanical bonding mechanisms and can exceed that of plasmasprayed coatings. Compared to thermal spray techniques, the material deposition is strictly focused onto small functional areas of the workpiece. Thus, being a precision technique, laser cladding is not recommended for large-area coatings. Examples of applications are turbine components and filigree parts of pump casings.
Similar content being viewed by others
References
J. Drozak, Properties of Particles and Adhesion at Thermal Spraying of Metal and Ceramic, VDI-Fortschrittberichte, Reihe 5 (No. 361), VDI-Verlag, 1994 (in German)
H.-D. Steffens, Z. Babiak, and M. Gramlich, Production of Thick Thermal Barrier Coatings of ZrO2-Y2O3 with Optimized Lifetime, Proc. of DLR-Workshop “Gradientenwerkstoffe,” 11.11, Köln, 1993 (in German)
R. Agethen and E. Lugscheider, Adhesion Strength of Thermal Sprayed Coatings, VDI-Bericht No. 702, VDI-Verlag, 1988, p 197–213 (in German)
S.Z. Lee and K.-H. Zum Gahr, Surface Treatments of Al2O3-Ceramics by CO2-Lasers, Materialwiss. und Werkstofftechn., Vol 23, 1992. p 117–123
P.C. Tsai, H.L. Tsai, and D.C. Tu, Effect of Processing Parameters on Laser Glazing of Plasma Sprayed YSZ, in Proc. of LAMP ’92, Nagaoka, June 1992, p 877–882
R. Sivakumar and B.L. Mordike, Laser Melting of Plasma Sprayed Ceramic Coatings, Surf. Eng., Vol 4 (No. 2), 1988, p 127–140
B. Grünenwald, Beam Combining for Laser Surface Treatment with Additional Material, Final Report, Dresden, Stuttgart, March 1995 (in German)
S. Nowotny, A. Müller, and A. Techel, Mechanical Properties of Laser Claddings of WC-Reinforced Hard Alloys, DVS-Berichte, Vol 175, 1996, p 155–159 (in German)
E. Ramous, L. Giordano, and A. Tiziani, Laser Cladding of Ceramic and Metallic Coatings on Steel, Proc. of Surface Engineering with High Energy Beams, 2nd International Seminar, Lisboa, 1989
E. Lugscheider, H. Bolender, K. Hochmuth, and G. Herziger, One-Step Powder Cladding of Oxide Ceramics onto Metal Substrates with CO2-Laser Radiation, DVS-Berichte, Vol 163, 1994, p 213–218
Y.T. Pei, J.H. Ouyang, and T.C. Lei, Laser Cladding of ZrO2-(Ni-Alloy) Composite Coating, Surf. Coat. Technol., Vol 81, 1996, p 131–135
R. Gassmann and M.F. Modest, Laser Cladding of PSZ on Titanium, Nickel, and Steel Alloys, Proc. of ICALEO 1994, 17–20.10, 1994, p 125–133
S.M. Lang, C.L. Fillmore, and L.H. Maxwell, J. Nat. Bur. Standards, Vol 4 (No. 84), 1952, p 301
J. Beczkowiak, X. Laufenburg, and H. Keller, Al2O3/TiO2 Coatings: An Alternative to Cr2O3?, DVS-Berichte, Vol 175, 1996, p 68–71 (in German)
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Nowotny, S., Richter, A. & Tangermann, K. Surface protection of light metals by one-step laser cladding with oxide ceramics. J Therm Spray Tech 8, 258–262 (1999). https://doi.org/10.1361/105996399770350476
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1361/105996399770350476