Impact of CeO2 modification on the quality and wear performance of Al2O3/SiC reinforced metal-based coatings

Zheng, Changjiang; Huang, Kepeng; Mi, Tongtong; Li, Mingke; Li, Songze; Yi, Xuemei

doi:10.1016/j.matchar.2024.113641

Cited by 6 publications

(4 citation statements)

References 44 publications

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“…Before the addition of CeO 2 , the grains at the bottom of the cladding layer are coarse, including large planar grains and columnar crystals. The addition of CeO 2 results in significant grain refinement [20,21]. With the increase in CeO 2 content, the grains at the bottom of the cladding layer are refined first and then coarsened.…”

Section: Microscopic Morphologymentioning

confidence: 99%

“…The underlying reasons for this phenomenon are multifaceted: Firstly, the uniformity of the microstructure within the cladding layer emerges as a pivotal factor influencing cracking [20]. The excessive addition of CeO 2 to form refractory compounds diminishes the fluidity of the molten pool, exacerbating organizational stresses [21], thus precipitating crack formation. Secondly, during the solidification phase, the excess of rare-earth elements accelerates the absorption rate of the cladding material, thereby enhancing energy within the molten pool and facilitating the release of more WC particles [23].…”

Section: Hardness Analysismentioning

confidence: 99%

“…The results show that the addition of CeO 2 can improve the hardness of the coating. The reason for the higher hardness of the S1 and S2 samples is that the addition of a low content of CeO 2 makes the microstructure of the cladding layer denser and the grains gradually smaller [21]. The grain refinement and solid solution strengthening effect improve the strength and microhardness of the cladding layer [26].…”

Section: Hardness Analysismentioning

confidence: 99%

See 2 more Smart Citations

Effect of CeO2 Content on Microstructure and Wear Resistance of Laser-Cladded Ni-Based Composite Coating

Zhang,

Shi,

Lin

et al. 2024

Lubricants

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In order to improve the wear resistance of 45 steel, in this study, WC/Ni60 composite coatings with different CeO2 additions (0, 1, 2, and 3 wt%) were prepared on 45 steel by the laser cladding technique; the experimental analysis was carried out by means of scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), X-ray diffraction (XRD), a Vickers hardness tester, and a friction and wear tester. The results show that CeO2 had little effect on the phase composition of the coatings; however, with the increase in CeO2 content, the CeO2 played a key role in refining the grains of the coating, thus reducing the generation of cracks. In addition, CeO2 could effectively strengthen the internal structure of the coating and improve its microhardness and wear resistance. Particularly noteworthy is the observed reduction in both the friction coefficient and mass loss of the coating when the CeO2 addition reached 2%. This suggests an enhancement in the tribological performance of the coating at this concentration.

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Section: Microscopic Morphologymentioning

confidence: 99%

Section: Hardness Analysismentioning

confidence: 99%

Section: Hardness Analysismentioning

confidence: 99%

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Effect of CeO2 Content on Microstructure and Wear Resistance of Laser-Cladded Ni-Based Composite Coating

Zhang,

Shi,

Lin

et al. 2024

Lubricants

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“…The results indicated that the grain size was refined, and the mechanical properties of the composite coating have been greatly improved after the modification of nano-CeO 2 . Zheng et al [39] employed Al 2 O 3 /SiC as reinforcement particles in the development of Ni62 composite coatings with various mass fractions of CeO 2 on 65 Mn steel by laser cladding. Their study demonstrates that incorporating an appropriate amount of CeO 2 can significantly improve the surface quality and wear resistance of the coating.…”

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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Laser cladding Ni60 @ WC/ Cu encapsulated rough MoS2 self-lubricating wear resistant composite coating and ultrasound-assisted optimization

Zheng,

Huang,

et al. 2024

Ceramics International

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Impact of CeO2 modification on the quality and wear performance of Al2O3/SiC reinforced metal-based coatings

Cited by 6 publications

References 44 publications

Effect of CeO2 Content on Microstructure and Wear Resistance of Laser-Cladded Ni-Based Composite Coating

Effect of CeO2 Content on Microstructure and Wear Resistance of Laser-Cladded Ni-Based Composite Coating

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

Laser cladding Ni60 @ WC/ Cu encapsulated rough MoS2 self-lubricating wear resistant composite coating and ultrasound-assisted optimization

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