Ceramics reinforced metal base composite coatings produced by CO2 laser cladding

Xichen Yang; Yu Wang; Nan Yang

doi:10.1117/12.765458

1 February 2008 Ceramics reinforced metal base composite coatings produced by CO₂ laser cladding

Xichen Yang, Yu Wang, Nan Yang

Proceedings Volume 6825, Lasers in Material Processing and Manufacturing III; 68250D (2008) https://doi.org/10.1117/12.765458
Event: Photonics Asia 2007, 2007, Beijing, China

Abstract

Due to the excellent performance in high strength, anti-temperature and anti-wear, ceramics reinforced metal base composite material was used in some important fields of aircraft, aerospace, automobile and defense. The traditional bulk metal base composite materials are the expensive cost, which is limited in its industrial application. Development of laser coating of ceramics reinforced metal base composite is very interesting in economy. This paper is focused on three laser cladding ceramics coatings of SiC particle /Al matrix , Al₂O₃ powder/ Al matrix and WC + Co/mild steel matrix. Powder particle sizes are of 10-60μm. Chemical contents of aluminum matrix are of 3.8-4.0% Cu, 1.2-1.8% Mg, 0.3-0.99% Mn and balance Al. 5KW CO₂ laser, 5 axes CNC table, JKF-6 type powder feeder and co-axis feeder nozzle are used in laser cladding. Microstructure and performance of laser composite coatings have been respectively examined with OM,SEM and X-ray diffraction. Its results are as follows : Microstructures of 3C-,6H- and 5H- SiC particles + Al + Al₄SiC₄ + Si in SiC/Al composite, hexagonal α-Al₂O₃ + cubic γ-Al₂O₃ + f.c.c Al in Al₂O₃ powder/ Al composite and original WC particles + separated WC particles + eutectic WC + γ-Co solid solution + W₂C particles in WC + Co/steel coatings are respectively recognized. New microstructures of 5H-SiC in SiC/Al composite, cubic γ-Al₂O₃ in Al₂O₃ composite and W₂C in WC + Co/ steel composite by laser cladding have been respectively observed.

Citation Download Citation

Xichen Yang, Yu Wang, and Nan Yang "Ceramics reinforced metal base composite coatings produced by CO₂ laser cladding", Proc. SPIE 6825, Lasers in Material Processing and Manufacturing III, 68250D (1 February 2008); https://doi.org/10.1117/12.765458

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