Evolution in microstructure, wear, corrosion, and tribocorrosion behavior of Mo-containing high-entropy alloy coatings fabricated by laser cladding

Fu, Yu; Huang, Chen Hung; Du, Cuiwei; Li, Jun; Dai, Cuixia; Luo, Hong; Li, Yong

doi:10.1016/j.corsci.2021.109727

Cited by 103 publications

(27 citation statements)

References 55 publications

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“…The traditional manufacturing techniques, machining and casting, are generating a large amount of waste materials. Therefore, to achieve environmental sustainability researchers have begun to pay more attention to other methods, such as laser cladding, producing functional coatings with improved properties, while reducing the waste material and improving the costs associated [32][33][34][35][36][37]. The cold spray process has also been proposed as a sustainable, versatile method that can be used with various substrates for multiple applications.…”

Section: Methods For the Development Of Sustainable Coatingsmentioning

confidence: 99%

“…To investigate this, a CoCr 2 FeNiMo x coating was created through the laser cladding method, on a carbon steel substrate. It was observed that the coating provided improved mechanical properties and increased corrosion resistance [34]. A similar coating, also created by laser cladding, consisting of CoCr 2.5 FeNi 2 Tix, was created on a stainless steel substrate, obtaining increased corrosion resistance and improved hardness [35].…”

Section: Trends In Enhancing Coatings Performances On Cocr Alloys and Other Metallic Alloys (Including High-entropy Alloys)mentioning

confidence: 99%

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Sustainable Coatings on Metallic Alloys as a Nowadays Challenge

2021

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Starting with a description of the meaning of sustainable coating nowadays, this review presents a selection of methods for sustainable coatings manufacture using raw materials, saving energy and costs. This selection creates an introduction for the coatings performances of intensively investigated coated alloys and their multifunctionality. There are many examples and EU recommendations to be discussed, and we especially chose to introduce sustainable coatings with both industrial and medical functions, such as bioinspired films and coatings on high-entropy alloys, biodegradable metallic alloys, etc. A special focus is on nanotechnology and nanomaterials in green procedures, enhancing coatings’ multifunctionality, introducing green corrosion inhibitors, smart additives, and coatings based on superhydrophobicity. The conclusions and future perspectives of sustainable and multifunctional coatings, as expressions of sustainable advanced materials, are based on important motivations of such studies.

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Section: Methods For the Development Of Sustainable Coatingsmentioning

confidence: 99%

Section: Trends In Enhancing Coatings Performances On Cocr Alloys and Other Metallic Alloys (Including High-entropy Alloys)mentioning

confidence: 99%

Sustainable Coatings on Metallic Alloys as a Nowadays Challenge

2021

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“…The initial cladding coating has rough surface and small contact areas with the grinding ball, so the concave convex body needs to be ground flat. Therefore, during the running in process, the coefficient of friction (COF) will increase rapidly until it reaches the 'stable state' [30][31][32][33]. The average COF of the coatings with different Mo contents are 0.4546, 0.3832, 0.3391, 0.2824 and 0.2738, respectively.…”

Section: Friction and Wear Propertymentioning

confidence: 99%

Microstructure, wear and electrochemical behaviors of laser cladding Fe-based coatings with various molybdenum contents

Li¹,

Wang²,

Zhang³

et al. 2022

Mater. Res. Express

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Fe-based alloy coatings with different Mo contents were fabricated on 45 steel substrates by laser cladding. X-ray diffractometer (XRD), scanning electron microscopy (SEM) and energy dispersive spectrometer (EDS) were used to analyze the phase composition and microstructural evolution of the coatings. The effects of Mo addition on the wear and electrochemical behaviors of the coatings were analyzed by ball-on-disc wear tester and electrochemical workstation. The results showed that the addition of Mo could help refine grains and promote the transition of dendrites to equiaxed grains. With the increase of Mo content, the hard phases changed from Fe2B to Mo2FeB2. Mo and Cr tend to aggregate in the intercrystalline regions in the form of hard phases. When the Mo content was 4.8 wt.%, the hardness increased by 3.6 times compared with that of the substrate. The wear resistance of the coatings increased with the Mo addition. Mo played the role of fine grain strengthening and solid solution strengthening, which was beneficial for the improvement of the hardness and wear resistance. Polarization curves and electrochemical impedance spectroscopy test results revealed that the addition of Mo could improve the corrosion resistance of Fe-based coating.

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“…For example a layer of CrMnFeCoNi was made on the surface of Q235 steel by laser cladding [ 13 ]. Also, on the surface of Q235 steel a layer of CoCr 2 FeNiMo x was made to achieve high wear resistance [ 14 ]. However, the hardness of some HEAs is low and does not satisfy hardness and wear resistance requirements of agriculture knives [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

WC-High Entropy Alloy Reinforced Long Life Self-Grinding Silage Knife Prepared by Laser Cladding

Song

et al. 2022

Nanomaterials

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The working environment of agricultural knives is bad, which makes the knives wear out easily. A wear resistant layer of AlCoCrFeNi high entropy alloy (HEA) reinforced by tungsten carbide (WC) was prepared by laser cladding on one side of the cutting edge of a 65 Mn silage knife. Both the effects of WC addition on the microstructure and mechanical properties of AlCoCrFeNi (WC)x (x = 0, 0.1, 0.2 and 0.3 in mass percentage) alloys were investigated. All experimental alloys displayed a crystalline structure of simple body centered cubic (BCC). The hardness of the cladding layer increases with the increase of WC content, and the hardness value enhances from 740 HV0.2 to 1060 HV0.2. A self-grinding edge was formed during working for the cladded knives. The cutting quality can be improved and the service life of agricultural knives can be increased meanwhile. The weight loss rate of untreated knives was about 2.64 times that of the cladded knives after a 76 h field experiment.

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Evolution in microstructure, wear, corrosion, and tribocorrosion behavior of Mo-containing high-entropy alloy coatings fabricated by laser cladding

Cited by 103 publications

References 55 publications

Sustainable Coatings on Metallic Alloys as a Nowadays Challenge

Sustainable Coatings on Metallic Alloys as a Nowadays Challenge

Microstructure, wear and electrochemical behaviors of laser cladding Fe-based coatings with various molybdenum contents

WC-High Entropy Alloy Reinforced Long Life Self-Grinding Silage Knife Prepared by Laser Cladding

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