Effects of CeO2 addition on microstructure and cavitation erosion resistance of laser-processed Ni-WC composites

Yang, Rui; Tian, Ye; Huang, Nengliang; Lu, Pengfei; Chen, Hao; Li, Hua; Chen, Xiuyong

doi:10.1016/j.matlet.2021.131583

Cited by 3 publications

(2 citation statements)

References 10 publications

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“…Compared with substrate, the microhardness and wear resistance of the coatings were better. To date, many studies had shown that adding earth oxide into the coating could inhibit the formation of defects, improve the microstructure of the coating, and induce fine-grained strengthening and dispersion strengthening [41][42][43]. However, the underlying mechanisms of CeO 2 incorporation on TiAl/WC coating wear resistance remain incompletely elucidated.…”

Section: Introductionmentioning

confidence: 99%

Uncovering the Effect of CeO2 on the Microstructure and Properties of TiAl/WC Coatings on Titanium Alloy

Sui,

Weng,

Zhang

et al. 2024

Coatings

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It remains a popular question whether rare earth oxides encourage reinforcing phases to the uniform distribution in cermet coating to improve the mechanical properties. This study applied laser cladding to prepare the TiAl/WC/CeO2 MMC cermet coatings on the TC21 alloy substrate. The effects of CeO2 content on the phase composition, microstructure formation, evolution mechanism, and properties of cermet coatings were investigated. Results show that the incorporation of CeO2 did not change the phase of composite coating, but the shape of the TiC phase has a close relation to the CeO2 content. CeO2 enhanced the fluidity of the molten pool, which further encouraged the TiC/Ti2AlC core-shell reinforcement phase. With the increase in CeO2 content, the optimized coating contributed to homogenous microstructure distribution and fine grain size. Owing to the hard phases strengthening and dispersion strengthening effects of CeO2, the microhardness of the composite coatings was all significantly higher (almost 1.6 times) than that of the substrate. Importantly, the addition of CeO2 significantly improved the wear resistance of the composite coating. This work provides a certain reference value for the study of surface strengthening of key parts in the aerospace field.

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Section: Introductionmentioning

confidence: 99%

Uncovering the Effect of CeO2 on the Microstructure and Properties of TiAl/WC Coatings on Titanium Alloy

Sui,

Weng,

Zhang

et al. 2024

Coatings

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“…The focused high-energy laser beam acts on the local region of the alloy with an energy value of more than 10 6 T/cm 2 . In addition, the absorption rate of magnesia-based silicon carbide composite material with a long-wavelength laser is up to 80% [ 11 , 12 , 13 , 14 , 15 ], which can cause the material to melt and evaporate the instantly and achieve efficient processing. Because the focus spot is small, the heat-affected zone is small, which can meet the requirements of precision machining.…”

Section: Introductionmentioning

confidence: 99%

Mechanism Analysis of Nanosecond Pulse Laser Etching of SiCp/Mg Composites

Song

Zhang

et al. 2022

Materials

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Due to the introduction of silicon carbide reinforcement, the physical and cutting properties of SiCp/Mg composites are very different from those of metal composites. Nanosecond pulse laser processing is more efficient than traditional processing for SiCp/Mg composites. A low-power pulsed fiber laser was used to etch 3.0 mm thick SiCp/Mg composites. The effect of low laser power (0~50 W) on the morphology and heat-affected zone of the SiCp/Mg composite after etching was studied. The results show that when the laser power increases, the material accumulation at the ablation end of the machining surface becomes more and more serious. With the increase in power, the differences in ablation width and ablation depth on the surface of composite materials do not increase proportionally. When the laser power increases gradually, the width of the heat-affected zone increases in the direction of the perpendicular laser beam and reaches the maximum value at the etched end.

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Effect of variations in Ni-W molar ratio on the microstructure, mechanical properties and tribology of electrodeposited Ni-W/diamond composite coatings

2023

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Effects of CeO2 addition on microstructure and cavitation erosion resistance of laser-processed Ni-WC composites

Cited by 3 publications

References 10 publications

Uncovering the Effect of CeO2 on the Microstructure and Properties of TiAl/WC Coatings on Titanium Alloy

Uncovering the Effect of CeO2 on the Microstructure and Properties of TiAl/WC Coatings on Titanium Alloy

Mechanism Analysis of Nanosecond Pulse Laser Etching of SiCp/Mg Composites

Effect of variations in Ni-W molar ratio on the microstructure, mechanical properties and tribology of electrodeposited Ni-W/diamond composite coatings

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