Microstructural and Tribological Behavior of Thermal Spray CrMnFeCoNi High Entropy Alloy Coatings

Patel, Payank; Alidokht, Sima A.; Sharifi, Navid; Roy, Amit; Harrington, Kelly M.; Stoyanov, Pantcho; Chromik, Richard R.; Moreau, Christian

doi:10.1007/s11666-022-01350-y

Cited by 41 publications

(12 citation statements)

References 56 publications

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“…However, most of the authors reported attractive results such as high strength and hardness [ 22 , 23 , 43 , 44 , 45 ], high-temperature oxidation resistance [ 46 , 47 , 48 , 49 , 50 ], high corrosion resistance [ 51 , 52 , 53 , 54 ], high temperature wear resistance [ 21 , 27 , 41 , 50 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 ], unique electrical and magnetic properties [ 68 , 69 , 70 , 71 ] and higher biocompatibility [ 72 , 73 , 74 , 75 ]. Owing to these superior combinations of mechanical and thermal properties, high-entropy coatings (HECs) have been proposed as a prominent solution to mitigate high-temperature tribological issues [ 41 , 56 , 64 , 67 , 76 , 77 , 78 , 79 , 80 , 81 ].…”

Section: High-entropy Alloys (Heas) and Coatings (Hecs)mentioning

confidence: 99%

“…The improvement of wear resistance by increasing H 2 flow rate and annealing is attributed to the enhancement of cohesive strength among splats and the increase in oxides. In contrast, Patel et al [ 81 ] developed CrMnFeCoNi coatings by means of HVOF with subsequent annealing heat treatment. The authors concluded that both as sprayed (AS) and annealed (HT) HE coatings exhibited major FCC single solid solution phase and minor formation of oxides as shown Figure 17 .…”

Section: Tribological Performance Of High-entropy Coatings (Hecs)mentioning

confidence: 99%

“… Cross-sectional microstructural images of as sprayed ( a – c ) and heat-treated ( d – f ) coatings [ 81 ]. …”

Section: Figurementioning

confidence: 99%

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Tribological Performance of High-Entropy Coatings (HECs): A Review

et al. 2022

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Surface coatings that operate effectively at elevated temperatures provide compatibility with critical service conditions as well as improved tribological performance of the components. High-entropy coatings (HECs), including metallic, ceramics, and composites, have gained attention all over the world and developed rapidly over the past 18 years, due to their excellent mechanical and tribological properties. High-entropy alloys (HEAs) are defined as alloys containing five or more principal elements in equal or close to equal atomic percentage. Owing to the high configurational entropy compared to conventional alloys, HEAs are usually composed of a simple solid solution phase, such as the BCC and FCC phases, instead of complex, brittle intermetallic phases. Several researchers have investigated the mechanical, oxidation, corrosion and wear properties of high-entropy oxides, carbides, borides, and silicates using various coating and testing techniques. More recently, the friction and wear characteristics of high-entropy coatings (HECs) have gained interest within various industrial sectors, mainly due to their favourable mechanical and tribological properties at high temperatures. In this review article, the authors identified the research studies and developments in high-entropy coatings (HECs) fabricated on various substrate materials using different synthesis methods. In addition, the current understanding of the HECs characteristics is critically reviewed, including the fabrication routes of targets/feedstock, synthesis methods utilized in various research studies, microstructural and tribological behaviour from room temperature to high temperatures.

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Section: High-entropy Alloys (Heas) and Coatings (Hecs)mentioning

confidence: 99%

Section: Tribological Performance Of High-entropy Coatings (Hecs)mentioning

confidence: 99%

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Tribological Performance of High-Entropy Coatings (HECs): A Review

et al. 2022

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“…Different surface treatments of equipment subject to wear can significantly increase the service life of tillage machines and reduce production costs. Researchers working on this topic [4][5][6][7][8][9][10][11][12][13][14][15][16][17] have improved surface performance by coating metal alloy powders using thermal spray technology. Thermal spray coatings are a well-developed and flexible surface engineering technique in which metallic and ceramic materials are sprayed onto the substrate surface in a molten or semi-molten state by kinetic energy [6].…”

Section: Introductionmentioning

confidence: 99%

Determination of wear resistance of nickel-carbide alloy coating by atmospheric plasma spray technique on 30MnB5 alloy steel used in cultivator blades

Dilay

2023

Mater. Res. Express

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The wear that occurs during tillage in agricultural machinery shortens the material’s life and increases costs. This study investigated the microstructure and morphology of cultivator blades coated with atmospheric plasma spray (APS) process and tested under real field conditions using OM, SEM, EDX, and XRD techniques. Abrasion tests were conducted in an area of 110 hectares and under two different soil moisture conditions. Material properties were investigated using hardness and surface roughness tests. The coating process was successful both mechanically and metallurgically by applying Ni-WC ceramic-metal (cermet) powder on the surface of 30MnB5 steel substrate with APS. The oxide and carbide structures detected on the coating surface by XRD studies resulted in a 1.5 times higher coating hardness. Due to the hard carbide phases in the coating matrix, the grooves on the wear surfaces were shallow and narrow compared to the substrate sample. The surface roughness values of the coated sample were approximately two times higher than the substrate sample. Due to the microstructure and high hardness, the coated specimen experienced three times less abrasion in both humidity conditions. The APS method can be successfully applied to the machined parts of tillage machines. In the near future, the cost of agricultural production can be reduced, and the environment can benefit from this method. In conclusion, this study presents a feasible approach to improving the wear resistance of Ni-WC ceramic-metal alloy by plasma spray coating under real field conditions.

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“…The successful deposition of HEA coatings by high-velocity oxy-fuel spraying [3,4], atmospheric plasma spraying [5,6] and detonation spraying [7] has been reported. It is important to note that, in all those works, the HEA coatings were thermally sprayed using pre-alloyed powders produced by ball milling or gas atomization.…”

Section: Introductionmentioning

confidence: 99%

A Feasibility Study of High-Entropy Alloy Coating Deposition by Detonation Spraying Combined with Laser Melting

et al. 2022

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In this work, a new two-stage approach to the deposition of high-entropy alloy coatings is proposed. At the first stage, a composite precursor coating is formed by detonation spraying of the metal powder mixtures. At the second stage, the precursor coating is re-melted by a laser, and the formation of multi-component solid solution phases can be expected upon solidification. The feasibility of the proposed approach was validated using three different mixtures of Fe, Ni, Cu, Co and Al powders. It was shown that detonation spraying allows forming composite coatings with a uniform distribution of the lamellae of different metals. The results of the structural analysis of the laser-treated coatings suggest that complete alloying occurred in the melt and face-centered cubic solid solutions formed in the coatings upon cooling.

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Microstructural and Tribological Behavior of Thermal Spray CrMnFeCoNi High Entropy Alloy Coatings

Cited by 41 publications

References 56 publications

Tribological Performance of High-Entropy Coatings (HECs): A Review

Tribological Performance of High-Entropy Coatings (HECs): A Review

Determination of wear resistance of nickel-carbide alloy coating by atmospheric plasma spray technique on 30MnB5 alloy steel used in cultivator blades

A Feasibility Study of High-Entropy Alloy Coating Deposition by Detonation Spraying Combined with Laser Melting

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