Investigation on swinging arc plasma-cladded Ni60A coating on copper surface

Zhang, Chao; Li, Dan; Hu, Rong; Lv, Jinjin; Zhang, Kun; Li, Guangshi; Lu, Xionggang

doi:10.1016/j.matlet.2021.130883

Cited by 18 publications

(10 citation statements)

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“…The chemical composition of Ni60A alloy powder is shown in Table 1. Coating preparation was carried out on a numerical control plasma cladding machine (PTA-400A) [18,19]. The cladding process parameters were as follows: preheating temperature 700°C, current 140 A, cladding speed 180 mm min −1 , powder feeding speed 30 g min −1 , swing speed 2500 mm min −1 and swing width 15 mm.…”

Section: Methodsmentioning

confidence: 99%

“…In our previous research, our group has developed plasma cladding coupled with induction preheating technology [18] and swing arc plasma cladding technology [19] for copper surface strengthening. These technologies have high efficiency and can prepare Ni-Cr-B-Si (Ni60A) coatings with excellent performance on copper.…”

Section: Introductionmentioning

confidence: 99%

“…In this study, based on previous research results [18,19], the microstructure and wear behaviour of Ni60A coating prepared by plasma cladding on copper were further analyzed layer by layer. The wear mechanism in different regions was discussed, aiming to further clarify the characteristics of Ni60A coating.…”

Section: Introductionmentioning

confidence: 99%

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Layer-by-layer analysis: Tribological behaviour of Ni60A coating on copper substrate prepared by plasma cladding

Zhang

Wang

et al. 2022

Materials Science and Technology

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To further clarify the characteristics of plasma-cladded Ni60A coating on copper, the microstructure and wear behavior were analyzed layer by layer. Along the depth direction, the coating can be divided into three regions according to the difference of microstructure: upper, middle and bottom. The phase composition in different regions was the same (including γ-(Cu, Fe, Ni), Cr23C6, CrB and Ni3Si), and there was no obvious difference in the volume fraction of strengthening phases (Cr23C6 and CrB). Due to the stronger load-bearing capacity of larger-size strengthening phases, the wear resistance of middle region was slightly higher than that of upper region. However, the high copper content in bottom region led to a decrease in hardness and resistance to plastic shear, which significantly reduced the wear resistance (2.3 times lower than upper region). Chemical composition had a greater impact on the wear resistance than size and distribution uniformity of strengthening phases.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Layer-by-layer analysis: Tribological behaviour of Ni60A coating on copper substrate prepared by plasma cladding

Zhang

Wang

et al. 2022

Materials Science and Technology

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“…Surface coating technology is an important method to improve the performance of copper surfaces, including thermal spraying, laser cladding, plasma cladding, and electroplating. [3][4][5] Among them, electroplating has the unique advantages of low cost, flexible operation, and convenient production process. [6] At present, Ni-Co alloys are commonly used as electroplating materials on copper surfaces due to their high hardness, corrosion resistance, and wear resistance.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Heat Treatment‐Induced Wear Transition in Electroplated Ni–Co Coating on Copper

Zhang

et al. 2022

Adv Eng Mater

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Herein, the effect of heat treatment on the high‐temperature wear resistance of Ni–Co electroplating coating on copper surface is systematically investigated. Results show that the oxide layer formed on the surface of coating during heat treatment induces the wear mechanism transition of coating. Under the condition without oxide layer formation (heat treatment at 400 °C), the coating suffers severe adhesive wear due to the low hardness caused by grain growth. After heat treatment at 600 °C, the formation of CoO and Co3O4 oxide layers on the surface of coating improves wear resistance, and the wear mechanism changes to oxidative wear and adhesive wear. The density of the oxide layer determines the degree of adhesive wear. As the heat treatment temperature increases (900 °C), the formation of a denser NiCo2O4 oxide layer with higher hardness further inhibits the adhesive wear mechanism of the coating. Until more than 6 h, the formation of scale‐shaped NiCo2O4 and 3CoO·NiO oxide layers significantly improves the wear resistance of the coating and completely eliminates adhesive wear. The wear mechanism is transformed into oxidative wear.

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