Influence of Laser Power on the Microstructure and Anti-Wear Performance of Laser Hybrid Plasma Spraying NiCr-Cr₃C₂ Coatings

Abstract:

The NiCr-Cr₃C₂ coatings were deposited on 38CrMoAl substrate by a laser hybrid plasma spraying (LHPS) technology in this study. The coatings’ microstructures and anti-wear performances with different laser power were characterized using an optical microscope, a scanning electron microscope, and the SRV test. The test results indicated that the laser power has great effect on the microstructure and performances of the LHPS coatings. And when the laser power is at the appropriate value, it can make the coating have more compact and homogeneous microstructure, exhibit less pores or micro-cracks, and the higher bonding strength and more excellent anti-wear performance of the coating are achieved.

• Periodical: Advanced Materials Research (Volume 1015)
• Pages: 119-123
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1015.119
• Online since: August 2014
• Authors: Shu Qing Li*, Shun Hua Liu, Qi Lian Li, Yu Ping Duan
• Keywords: Anti-Wear Performance, Laser Power, Laser-Hybrid Plasma Spraying

References

[1] Sang Ok Chwa, Akira Ohmori. Thermal diffusivity and erosion resistance of ZrO2-8wt. %Y2O3 coatings prepared by a plasma laser hybrid spraying technique. Thin Solid Films, 2002(415): 160-166.

DOI: 10.1016/s0040-6090(02)00533-3

[2] Sang Ok Chwa, Akira Ohmori. Microstructures of ZrO2-8wt. %Y2O3 coatings prepared by a plasma laser hybrid spraying technique. Surface & Coatings Technology, 2002(153): 304-312.

DOI: 10.1016/s0257-8972(01)01686-3

[3] J.H. Ouyang, S. Sasaki. Microstructure and tribological characteristics of ZrO2-Y2O3 ceramic coatings deposited by laser-assisted plasma hybrid spraying. Tribology International, 2002 (35): 255-264.

DOI: 10.1016/s0301-679x(02)00005-1

[4] L. Dubourg , R.S. Lima, C. Moreaub. Properties of alumina–titania coatings prepared by laser-assisted air plasma spraying. Surface & Coatings Technology, 2007 (201): 6278–6284.

DOI: 10.1016/j.surfcoat.2006.11.026

[5] Hitoshi Hiraga, Takashi Inoue, Hirofumi Shimura, Akira Matsynawa. Caviation erosion mechanism of NiTi coatings made by laser plasma hybrid spraying. WEAR, 1999 (231): 272-278.

DOI: 10.1016/s0043-1648(99)00133-7

[6] Hitoshi Hiraga, Takashi Inoue, Akira Matsynawa, Hirofumi Shimura. Effect of laser irradiation condition on bonding strength in laser plasma hybrid spraying. Surface & Coatings Technology, 2001 (138): 284-290.

DOI: 10.1016/s0257-8972(01)00985-9

[7] Hitoshi Hiraga, Takashi Inoue, Shigeharu Kamado, Yo Kojimab, Akira Matsunawac, Hirofumi Shimura. Fabrication of NiTi intermetallic compound coating made by laser hybrid spraying of mechanically alloyed powders. Surface & Coatings Technology, 2001(139): 93-100.

DOI: 10.1016/s0257-8972(01)00994-x