Mechanical Properties and Cavitation Erosion Behavior of CeO2-Modified Dual-scale WC-10Co-4Cr Coating Prepared by HVOF

Liu, Ji; Chen, Tongzhou; Duan, Haitao; Yuan, Chengqing; Bai, Xiuqin

doi:10.1007/s11666-022-01442-9

Cited by 10 publications

(2 citation statements)

References 30 publications

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“…The surface morphologies of the bare and CeO 2 -modified WC-10Co4Cr powders are presented in Figure 2. Both powder particles exhibit a spherical or nearly spherical shape and possess a size distribution that is close to normal, which is consistent with previous studies [27]. Further examination of EDS shows that in addition to W, Co metal binders are almost uniformly distributed in both powers.…”

Section: The Microstructure Of the Powders And Coatingssupporting

confidence: 90%

Microstructure and Wear Performance of CeO2-Modified Micro-Nano Structured WC-CoCr Coatings Sprayed with HVOF

et al. 2023

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Rare earth elements have been widely utilized in material manufacturing to enhance properties in various ways. In order to obtain the WC-10Co4Cr coating with uniform distribution of rare earths, CeO2-modified powder was prepared by mixing 1 wt.% nano-sized CeO2 during the initial ball-milling of the powder fabrication process. Bare and CeO2-modified WC-10Co4Cr coatings were deposited via high velocity oxygen fuel spraying to investigate the impact of CeO2 modification on the coating’s microstructure, mechanical properties and abrasive wear performance. The results show that the addition of CeO2 increased the interface energy, inhibiting the formation of the Co3W3C phase during the powder sintering process, as well as the W2C phase and CoCr alloy during the high-velocity oxy-fuel (HVOF) process. This led to a significantly decreased porosity and higher concentration of undissolved Cr-rich areas. The microhardness and fracture toughness of the CeO2-modified coating were 1230 HV0.3 and 5.77 MPam1/2, respectively. The abrasive wear resistance of the CeO2-modified coating was only 70.9% of that of the unmodified coating. Due to the weak cohesive strength between WC and Cr, Cr-rich areas were preferentially removed, resulting in an increased wear rate in the CeO2-modified coating.

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Section: The Microstructure Of the Powders And Coatingssupporting

confidence: 90%

Microstructure and Wear Performance of CeO2-Modified Micro-Nano Structured WC-CoCr Coatings Sprayed with HVOF

et al. 2023

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“…REOs can also enhance the hardness and wear resistance of the material by protecting the easily oxidized reinforced phase particles in the coating. For example, CeO 2 and La 2 O 3 can effectively inhibit the decarburization and oxidation of WC during coating deposition [144,145], and the coating has the highest WC retention. The synergistic effect of WC and RE has a positive effect on improving the wear resistance of the coating through fine grain and phase strengthening (carbide).…”

Section: Mechanisms Of Reos On Tribological Propertiesmentioning

confidence: 99%

Effects of Rare Earths on Microstructure and Wear Resistance in Metal Additive Manufacturing: A Review

Xiang,

Wang,

Zheng

et al. 2024

Coatings

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Rare earth elements (REEs) doping technology can effectively control the microstructure and improve the quality and performance of materials. This paper summarizes the research progress of REEs in metal additive manufacturing (MAM) in recent years and briefly introduces the effects of REEs on the molten pool fluidity, purified structure, and interfacial bonding between the molten cladding layer and substrate. It focuses on the mechanism of the role of REEs in the refinement and homogenization of microstructures, including grain growth, columnar to equiaxed transition (CET), and elemental segregation. The reasons for the influence of REEs on the homogenization of the structure and elemental segregation are analyzed. The effects of REE type, content, and dimension on hardness and wear resistance are investigated. Finally, tribological applications of REEs in biological and high-temperature environments are summarized, and the impact of REEs-modified alloys is summarized and prospected.

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Effect of HVOF–sprayed nanostructured WC–10Co–4Cr coating on sliding wear and tensile–tensile fatigue properties of TC6 titanium alloy

Si,

Li,

Zhao

et al. 2024

International Journal of Refractory Metals and Hard Materials

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Mechanical Properties and Cavitation Erosion Behavior of CeO2-Modified Dual-scale WC-10Co-4Cr Coating Prepared by HVOF

Cited by 10 publications

References 30 publications

Microstructure and Wear Performance of CeO2-Modified Micro-Nano Structured WC-CoCr Coatings Sprayed with HVOF

Microstructure and Wear Performance of CeO2-Modified Micro-Nano Structured WC-CoCr Coatings Sprayed with HVOF

Effects of Rare Earths on Microstructure and Wear Resistance in Metal Additive Manufacturing: A Review

Effect of HVOF–sprayed nanostructured WC–10Co–4Cr coating on sliding wear and tensile–tensile fatigue properties of TC6 titanium alloy

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