Effect of high-speed laser cladding on microstructure and corrosion resistance of CoCrFeNiMo0.2 high-entropy alloy

Ma, Xufeng; Sun, Yueming; Cheng, Wangjun; Chong, Zhenzeng; Huang, Liufei; Meng, Acong; Jiang, Liheng

doi:10.1007/s11771-022-5162-y

Cited by 12 publications

(4 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The study on the protection of materials by corrosion products has been conducted. Ma et al [23] investigated the high-speed laser cladding coating CoCrFeNiMo, which protects the substrate through self-passivation. Ke et al [24] studied the TiB 2 -SiC coating that forms a high-temperature oxide protective film against lava corrosion.…”

Section: Introductionmentioning

confidence: 99%

Corrosion-resistant behavior and structural optimization of Ti/Cr, Ti/Cu, Cr/Cu, Ti/Cr/Cu multimetallic layer coatings in simulated seawater

Xu,

Cai,

Lian

et al. 2024

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

This article is based on the sacrificial anode cathodic protection principle and the optimization method of multilayer structure. According to the standard electrode potential of metals, starting from the corrosion-resistant passive film formed by the metal itself, Ti/Cr, Ti/Cu, Cr/Cu, and Ti/Cr/Cu coatings were prepared on a 316L stainless steel substrate using magnetron sputtering technology. The corrosion performance of the coatings was studied to explore the interaction patterns between them.The results showed that in artificial seawater, the Cr/Cu, Ti/Cu, and Ti/Cr metal bilayer film coatings exhibited an increasing impedance arc radius and widening phase angle plateau in the electrochemical impedance spectroscopy. In the polarization curve, the self-corrosion current, the self-corrosion potential and polarization resistance are all better than the substrate. In the static immersion test, the weight loss rate of the metal multi-layer film gradually decreased, with all samples showing a lower weight loss rate in the second week compared to the first week, ranging from 27% to 52%. By further designing the microstructure of the coating to mitigate the contradiction between hardness and toughness, and reduce the generation of pores, the corrosion performance of the new Ti/Cr/Cu coating is significantly improved. The coating can repair surface defects of the material, fill in micro and nano gaps, and enhance the cathodic protection effect of sacrificial anodes.

show abstract

Section: Introductionmentioning

confidence: 99%

Corrosion-resistant behavior and structural optimization of Ti/Cr, Ti/Cu, Cr/Cu, Ti/Cr/Cu multimetallic layer coatings in simulated seawater

Xu,

Cai,

Lian

et al. 2024

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

show abstract

“…A CoCrFeNiMo high-entropy alloy is an alloy system that possesses comprehensive properties [24]. Ma et al [25] prepared the CoCrFeNiMo 0.2 coating through high-speed laser cladding and compared the microstructure and properties with the traditional laser cladding coating. The results showed that the high-speed laser cladding coating had a fine microstructure and better corrosion resistance.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Microstructure and Properties of CoCrFeNiMo High-Entropy Alloy Coating Prepared through High-Speed Laser Cladding

Zhang

Wang

et al. 2023

Coatings

View full text Add to dashboard Cite

High-speed laser cladding was introduced to prepare a CoCrFeNiMo high-entropy alloy (HEA) coating. The microstructure, composition distribution, micromechanical properties, and corrosion resistance of the CoCrFeNiMo coating were characterized. As a result, the coating exhibited a dual FCC- and BCC-phase structure, and the grain size of the coating prepared through high-speed laser cladding was only 2~5 μm. The upper and lower parts of the coating were composed of equiaxed cellular crystals and slender columnar crystals, respectively. The interdendritic structure was a Mo-rich phase that was distributed in a network-like pattern. The nanoindentation tests revealed that the interdendritic BCC phase had high hardness and an elastic modulus as well as excellent resistance to deformation, while the intradendritic FCC phase possessed superior crack propagation resistance. In addition, the two phases could generate cooperative elastic deformation during the elastic deformation stage. The electrochemical performance of the coating was tested in 3.5 wt% NaCl solution, and the corrosion potential Ecorr and corrosion current density Icorr of the coating were −0.362 V and 3.69 × 10−6 A/cm2, respectively. The high-speed laser cladding CoCrFeNiMo HEA coating had excellent corrosion resistance thanks to the presence of the easily passivating element Mo and grain refinement.

show abstract

“…At present, cladding technologies include argon arc cladding [3], induction cladding [4,5], plasma cladding [6][7][8], laser cladding [9][10][11], etc. Plasma cladding and laser cladding are more widely used in industry due to their convenient operation, high energy density, and excellent coating quality.…”

Section: Introductionmentioning

confidence: 99%

“…Mu et al successfully prepared CoCrFeNiMo coatings with exceptional friction resistance using plasma cladding [25]. Ma et al prepared CoCrFeNiMo coatings using laser cladding, and compared the comprehensive properties of coatings with a different cladding speed [9]. Therefore, the preparation of a CoCrFeNiMo HEA coating on the surface of Q235 steel using cladding technology not only retains the advantages of high toughness and plasticity of Q235 steel, but also greatly improves its surface hardness, wear resistance, and corrosion resistance, which is of positive significance for the industrial application of this high entropy alloy.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Fe30Co20Cr20Ni20Mo3.5 High Entropy Alloy Coatings Prepared Using Plasma Cladding, High-Speed Laser Cladding, and Deep Laser Cladding

Li,

et al. 2023

Coatings

View full text Add to dashboard Cite

Three kinds of Fe30Ni20Co20Cr20Mo3.5 high entropy alloy (HEA) coatings were prepared on the surface of a Q235 steel plate using plasma cladding and laser cladding. The microstructure, crystal structure, element distribution, microhardness, wear resistance, and corrosion resistance of the coatings were studied. The grain size of the high-speed laser cladding coating (HLC) was the smallest. The crystal structures of the plasma cladding coating (PC) and HLC were single face-centered cubic (FCC), while that of the deep laser cladding coating (DLC) was body-centered cubic (BCC). DLC had the best microhardness and wear resistance. The microhardness of PC, HLC, and DLC increased by 70%, 108%, and 109%, respectively, and the average friction coefficient decreased by 33%, 44%, and 51%, respectively, compared to Q235. HLC had the best corrosion resistance, with an annual corrosion rate of 0.66925 mm/a. The annual corrosion rate of PC and HLC was only 40% of Q235. The polarization curves of PC and HLC had obvious passivation regions with a width of up to 2 V. The corrosion types of PC were pitting corrosion and intergranular corrosion, that of HLC was general corrosion, and that of DLC was severe pitting corrosion.

show abstract

Effect of high-speed laser cladding on microstructure and corrosion resistance of CoCrFeNiMo0.2 high-entropy alloy

Cited by 12 publications

References 27 publications

Corrosion-resistant behavior and structural optimization of Ti/Cr, Ti/Cu, Cr/Cu, Ti/Cr/Cu multimetallic layer coatings in simulated seawater

Corrosion-resistant behavior and structural optimization of Ti/Cr, Ti/Cu, Cr/Cu, Ti/Cr/Cu multimetallic layer coatings in simulated seawater

Investigation of the Microstructure and Properties of CoCrFeNiMo High-Entropy Alloy Coating Prepared through High-Speed Laser Cladding

Comparison of Fe30Co20Cr20Ni20Mo3.5 High Entropy Alloy Coatings Prepared Using Plasma Cladding, High-Speed Laser Cladding, and Deep Laser Cladding

Contact Info

Product

Resources

About