Microstructure and property of Ni60CuMoW composite coating treated prepared with magnetic field and laser cladding process

Liu Hongxi; Ji Shengwei; Jiang Yehua; Zhang Xiaowei; Wang Chuanqi

doi:10.3788/HPLPB20122412.2901

Volume 24 Issue 12

Nov. 2012

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Article Navigation > High Power Laser and Particle Beams > 2012 > 24(12): 2901-2905

Liu Hongxi, Ji Shengwei, Jiang Yehua, et al. Microstructure and property of Ni60CuMoW composite coating treated prepared with magnetic field and laser cladding process[J]. High Power Laser and Particle Beams, 2012, 24: 2901-2905. doi: 10.3788/HPLPB20122412.2901

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Liu Hongxi, Ji Shengwei, Jiang Yehua, et al. Microstructure and property of Ni60CuMoW composite coating treated prepared with magnetic field and laser cladding process[J]. High Power Laser and Particle Beams, 2012, 24: 2901-2905. doi: 10.3788/HPLPB20122412.2901

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Microstructure and property of Ni60CuMoW composite coating treated prepared with magnetic field and laser cladding process

doi: 10.3788/HPLPB20122412.2901

1.
School of Materials Science and Engineering,Kunming University of Science and Technology,Kunming 650093,China

Received Date: 2012-01-30
Rev Recd Date: 2012-03-20
Publish Date: 2012-11-05

Abstract

Abstract

In order to obtain fine grain structure and improve laser cladding coating quality, Ni60CuMoW composite coating was fabricated by magnetic field assisted laser cladding technique on Q235 steel surface. The microstructure and phase composition of the cladding composite coating were analyzed by scanning electron microscopy (SEM), X-ray diffraction (XRD) and energy dispersive spectrometer (EDS). The cross-section hardness and abrasion performance of the cladding composite coating were measured by Vickers hardness tester and friction and wear device. The corrosion behaviors of the composite coatings were characterized through electrochemical test system. The results show that the phase of the laser cladding composite coatings is mainly composed of -（Ni, Cu）solid solution, silicides and borides. The Cr3Si grain is fine, uniform and compact. The average hardness of the composite coating is 913HV0.5, which is 1.5 times higher than that of the coating without magnetic field. The weight loss of laser cladding composite coating is only about 36% the coating without magnetic field. The corrosion potential increases about 100 mV, and corrosion current density decreases by 70%. The wear behaviors and corrosion resistance of the laser cladding composite coatings are significantly improved.
- laser cladding,
- composite coatings,
- magnetic field,
- microstructure,
- mechanical property

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