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FABRICATION OFIN SITUFe-Ti-BCOMPOSITE COATING BY LASER CLADDING

Author

Listed:
  • BAOSHUAI DU

    (Shandong Electric Power Research Institute, Shandong Electric Power Corporation, Jinan 250002, China)

Abstract

Laser cladding was applied to depositin situFe-Ti-Bcomposite coatings on mild carbon steel with precursor of ferrotitanium, ferroboron and pureFealloy powders. The composite coatings were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and electron probe microanalysis (EPMA). Wear resistance of the laser-claddedFe-Ti-Bcoatings was evaluated under dry sliding condition at room temperature using block-on-ring wear tester. Results indicate thatin situreinforcements ofTiB2andFe2Bcan be synthesized in theFe-Ti-Bcoatings. The amount ofTiB2increases with the increase of content of ferrotitanium and ferroboron in the precursor. Reinforcements are formed through the liquid-precipitation route following the solidification path of theFe-Ti-Bsystem. Hardness and wear properties of the coatings improved significantly in comparison to the as-received substrate due to the presence of hard reinforcements.

Suggested Citation

  • Baoshuai Du, 2013. "FABRICATION OFIN SITUFe-Ti-BCOMPOSITE COATING BY LASER CLADDING," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 20(03n04), pages 1-8.
    • Handle: RePEc:wsi:srlxxx:v:20:y:2013:i:03n04:n:s0218625x13500340
    DOI: 10.1142/S0218625X13500340
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