Microstructure and wear resistance of Fe-based WC coating by multi-track overlapping laser induction hybrid rapid cladding

Zhou, Shengfeng; Dai, Xiaoqin; Zheng, Haizhong

doi:10.1016/j.optlastec.2011.06.017

Cited by 119 publications

(31 citation statements)

References 24 publications

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“…The cross-sectional images of the laser-cladding samples in Figures 3 and 4 clearly show that the grain size decreased from the coating zone to the 316L stainless steel substrate zone, which became common when CeO 2 was added. Since the strength of a material is inversely dependent on its grain size [25] and hardness is directly proportional to strength [26], the hardness in the coating zone was higher than in other areas, especially when CeO 2 was added ( Figure 5). Figure 5.…”

Section: Hardness Measurementsmentioning

confidence: 99%

Effect of Rare Earth Oxides on Microstructure and Corrosion Behavior of Laser-Cladding Coating on 316L Stainless Steel

Wang

Chen

et al. 2019

Coatings

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The effect of rare earth oxides on the microstructure and corrosion behavior of laser-cladding coating on 316L stainless steel was investigated using hardness measurements, a polarization curve, electrochemical impedance spectroscopy (EIS), a salt spray test, X-ray diffraction, optical microscopy, and scanning electron microscopy (SEM). The results showed that the modification of rare earth oxides on the laser-cladding layer caused minor changes to its composition but refined the grains, leading to an increase in hardness. Electrochemical and salt spray studies indicated that the corrosion resistance of the 316L stainless steel could be improved by laser cladding, especially when rare earth oxides (i.e., CeO2 and La2O3) were added as a modifier.

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Section: Hardness Measurementsmentioning

confidence: 99%

Effect of Rare Earth Oxides on Microstructure and Corrosion Behavior of Laser-Cladding Coating on 316L Stainless Steel

Wang

Chen

et al. 2019

Coatings

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“…As a result, the eutectic is formed. It is well known that the microstructure mainly depends on the temperature gradient (G) and solidification rate (R) during the laser cladding process [17]. According to solidification theory, the G/R value has a significant effect on the microstructure morphology of cladding coating [18,19].…”

Section: Microstructure Of Laser Cladding Coatingmentioning

confidence: 99%

Investigation on microstructure and wear characteristic of laser cladding Fe-based alloy on wheel/rail materials

Ding

Wang

et al. 2015

Wear

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“…As shown in Table II, the control parameters used during the process of laser melting were: laser power of 800 and 1000 W; pulse frequency of 50 and 60 Hz; scan speed of 3 and 5 mm/s; pulse duration of 1 and 2 mm, focal distance of 2 mm below and 2 mm above the focus plane and air pressure of 1 and 2 kgf/mm 2 . Although some reports on the application of laser cladding to WC/Co alloy coatings have been published [4,5], further study is needed to determine how to produce an excellent WC/Co composite coating by choosing the proper laser parameters.…”

Section: Coating Depositionmentioning

confidence: 99%

“…The rapid development of hard coatings in recent years is largely due to the availability of advanced joining techniques that can provide previously unachievable properties [1][2][3]. These new properties have attracted substantial attention from numerous researchers and engineers and have various applications, in polymer materials, biomedical applications, electronic parts, automobiles, and other [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Microstructural Evolution and Wear Behavior of HVOF Spraying WC/Co Coatings Produced by Laser Cladding

Lian

Jean

2018

Acta Phys. Pol. A

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This study reports that laser-treated HVOF-spray coated surfaces of WC/Co composite were fabricated on 45 carbon substrates using laser treatment technology. The hardfacing coatings were applied by combining two different techniques of HVOF spraying and laser irradiation. Wear behavior of the coatings was systematically investigated, and microstructural evolution of the laser melted HVOF-sprayed coatings was characterized and compared with that of HVOF-sprayed coatings. Microstructural observation shows that both coatings exhibit similar phases, but there are differences in the formation of tungsten carbide, micro-hardness distribution, closely packed structures and wear behaviors of the coatings. Coatings with evenly distributed WC ceramic phases and a better bonding mechanism to the substrate alloy were obtained by laser-based HVOF spraying treatment. The results of this study indicate that the wear behaviors of the HVOF-sprayed WC/Co composite coatings prepared by laser irradiation are much better than those of the plain HVOF-sprayed coating. The wear volume loss of HVOF-sprayed WC/Co composite coating prepared by laser melting treatment is the lowest, only 50% of that of the HVOF-sprayed coating, thereby providing better wear resistant properties. Overall, the increase in wear resistance was attributed to the formation of dendritic-tungsten carbide, high micro-hardness distribution and to closely packed structures of the coatings.

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Microstructure and wear resistance of Fe-based WC coating by multi-track overlapping laser induction hybrid rapid cladding

Cited by 119 publications

References 24 publications

Effect of Rare Earth Oxides on Microstructure and Corrosion Behavior of Laser-Cladding Coating on 316L Stainless Steel

Effect of Rare Earth Oxides on Microstructure and Corrosion Behavior of Laser-Cladding Coating on 316L Stainless Steel

Investigation on microstructure and wear characteristic of laser cladding Fe-based alloy on wheel/rail materials

Microstructural Evolution and Wear Behavior of HVOF Spraying WC/Co Coatings Produced by Laser Cladding

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