ZrC reinforced refractory-high-entropy-alloy coatings: compositional design, synthesis, interstitials, and microstructure evolution effects on wear, corrosion and oxidation behaviors+

Shang, Xiaojuan; Bo, Shoushi; Guo, Yaxiong; Liu, Qibin

doi:10.1016/j.apsusc.2021.150466

Cited by 26 publications

(8 citation statements)

References 43 publications

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“…For example, the Al 6.25 Mo 6.25 Ti 29.2 Zr 29.2 Nb 29.2 coating had a stable and wide passivation zone with a low passivation current density in 3.5 wt.% NaCl solution, accelerating the formation of a protective passivation film on the surface of the coating, thus avoiding the attack of chloride ions on the coating. 147 It was further proven that the corrosion resistance of the coating exceeded that of the bulk Al 6.25 Mo 6.25 Ti 29.2 Zr 29.2 Nb 29.2 HEA because of the more uniform element distribution. 147 Bachani et al 98 found that the dense surface structure created favorable conditions for the VNbMoTaWAl coating to avoid pitting corrosion in 0.5 M H 2 SO 4 solution, with a 1772 mV passivation range.…”

Section: Corrosion Research and Mechanism Of Hea Coatingsmentioning

confidence: 97%

“…147 It was further proven that the corrosion resistance of the coating exceeded that of the bulk Al 6.25 Mo 6.25 Ti 29.2 Zr 29.2 Nb 29.2 HEA because of the more uniform element distribution. 147 Bachani et al 98 found that the dense surface structure created favorable conditions for the VNbMoTaWAl coating to avoid pitting corrosion in 0.5 M H 2 SO 4 solution, with a 1772 mV passivation range. Moreover, a large charge transfer resistance made the amorphous Ti 1.5 ZrTa 0.5 Nb 0.5 Hf 0.5 coatings exhibit uniform corrosion resistance in a simulated biological environment.…”

Section: Corrosion Research and Mechanism Of Hea Coatingsmentioning

confidence: 97%

“…Additionally, the mixing enthalpy and elastic modulus of the coating and substrate should be considered because large differences will lead to the failure of the coating/substrate interface, resulting in the acceleration of corrosion behavior. 147 HEA composite coatings.-The appearance of HEA composite coatings broadens the application of HEA coatings for industrial manufacturing. Usually, HEA composite coatings with reinforced phase particles (e.g., TiC, 154 TiN, 76 WC, 83 etc.)…”

Section: Corrosion Research and Mechanism Of Hea Coatingsmentioning

confidence: 99%

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Review—Corrosion-Resistant High-Entropy Alloy Coatings: A Review

Cheng¹,

Pan²,

Fu³

et al. 2021

J. Electrochem. Soc.

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For a long time, the corrosion problem of materials has been an essential factor in restricting high-tech and national economic development. As an effective means of corrosion protection, surface coatings have drawn extensive attention in the field of material corrosion. Performance improvement and a new composition system of high-entropy alloys (HEAs) have made HEA coatings a research hotspot. HEA coatings inherit the “four core effects” of bulk HEAs, especially high entropy and sluggish diffusion, making high-quality coatings exhibit outstanding corrosion resistance. At present, many reports have focused on the performance of HEA coatings in the field of severe corrosion environments. This article reviews the process parameters and different element contents on the corrosion resistance of HEA coatings in recent years. This paper describes the advantages and excellent corrosion resistance of HEA coatings, including the preparation methods and classification of HEA coatings. Moreover, exploration of the corrosion behavior and the mechanism of HEA coatings are described, and the influence of passivation behavior and microstructure change on the corrosion resistance of HEA coatings are discussed. Finally, the prospect of research on corrosion-resistant HEA coatings is proposed, and possible future research directions and ideas are suggested.

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Section: Corrosion Research and Mechanism Of Hea Coatingsmentioning

confidence: 97%

Section: Corrosion Research and Mechanism Of Hea Coatingsmentioning

confidence: 97%

Section: Corrosion Research and Mechanism Of Hea Coatingsmentioning

confidence: 99%

See 1 more Smart Citation

Review—Corrosion-Resistant High-Entropy Alloy Coatings: A Review

Cheng¹,

Pan²,

Fu³

et al. 2021

J. Electrochem. Soc.

View full text Add to dashboard Cite

show abstract

“…To report the influence of C on the anti-corrosion of LC-HEACs, Shang et al [56] prepared Al 6.25 -Mo 6.25 -Ti 29.2 -Zr 29.2 -Nb 29.2 + xC at % (x = 0, 0.4, 0.8) LC-HEACs on the surface of pure titanium alloy. The distribution of the elements in the HEA coatings becomes more uniform with the proper addition of C, which significantly increases the coatings' anti-corrosion ability.…”

Section: Carbonmentioning

confidence: 99%

Corrosion of Laser Cladding High-Entropy Alloy Coatings: A Review

et al. 2022

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Material corrosion is a common phenomenon. Severe corrosion not only causes material failure, but may also lead to unexpected catastrophic accidents. Therefore, reducing the loss caused by corrosion has become a problem faced by countries around the world. As a surface modification technology, laser cladding (LC) can be used to prepare coatings that can achieve metallurgical bonding with the substrate. High-entropy alloys (HEAs) are a new material with superior anti-corrosion ability. Therefore, HEA coatings prepared by LC have become a research hotspot to improve the anti-corrosive ability of material surfaces. In this work, the effects of LC process parameters, post-processing, and the HEA material system on the anti-corrosion ability of HEA coatings and their mechanisms are reviewed. Among them, the LC process parameters influence the anti-corrosion ability by affecting the macroscopic quality, dilution rate, and uniformity of the coatings. The post-processing enhances the anti-corrosion ability of the coatings by improving the internal defects and refining the grain structure. The anti-corrosion ability of the coatings can be improved by appropriately adding transition metal elements such as Ni, Cr, Co, and rare earth elements such as Ce and Y. However, the lattice distortion, diversification of phase composition, and uneven distribution caused by excess elements will weaken the corrosion protection of the coatings. We reviewed the impact of corrosion medium on the anti-corrosion ability of coatings, in which the temperature and pH value of the corrosion medium affect the quality of the passive film on the surface of the coatings, thereby affecting the anti-corrosion ability of the coatings. Finally, to provide references for future research, the development trend of preparing HEA coatings by LC technology is prospected.

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“…At the same time, the choice of laser cladding powder is wide, which can accurately control the realization of selective cladding and reduce the waste of materials. The rapid heating and cooling process of the laser cladding process refines the coating grains [33,34] and forms a dense structure, which can effectively improve the mechanical properties of the coating such as strength, hardness, and wear resistance. Therefore, as a surface modification technology, laser cladding has been widely used in improving the surface wear resistance, corrosion resistance, and biocompatibility of biomedical materials and reducing the content of biotoxic ions.…”

Section: Introductionmentioning

confidence: 99%

Effect of Nb Content on Phase Transformation and Comprehensive Properties of TiNb Alloy Coating

Zheng

2023

Coatings

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As a β phase transformation promoting element of titanium alloy, the Nb element can induce different phase transformations of the alloy, improving the comprehensive properties of the alloy. However, the research on the effect of Nb content on the properties of TiNb alloy coating during laser cladding is not comprehensive. Herein, TixNb (x = 32.5~62.5 wt.%) alloy coatings were prepared by laser cladding technology, and their mechanical properties, corrosion resistance, and biocompatibility were analyzed. The results show that the Nb element promotes the precipitation of different phase components in the phase transformation-induced coating of titanium alloy. The grain refinement during the laser cladding process effectively improves the microhardness of the TiNb alloy coating. At the same time, the wear resistance of the α″ + β dual-phase Ti32.5Nb alloy is enhanced. In addition, with the increase in Nb content, the coating exhibits better corrosion resistance. In vitro cell experiments showed that the TiNb alloy coating had excellent biocompatibility compared to the TC4 substrate. Therefore, the laser-clad TiNb alloy coating has high comprehensive performance and has reference value in the field of biological implantation.

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ZrC reinforced refractory-high-entropy-alloy coatings: compositional design, synthesis, interstitials, and microstructure evolution effects on wear, corrosion and oxidation behaviors+

Cited by 26 publications

References 43 publications

Review—Corrosion-Resistant High-Entropy Alloy Coatings: A Review

Review—Corrosion-Resistant High-Entropy Alloy Coatings: A Review

Corrosion of Laser Cladding High-Entropy Alloy Coatings: A Review

Effect of Nb Content on Phase Transformation and Comprehensive Properties of TiNb Alloy Coating

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