Microstructure and tribological properties of Ni-based claddings on Cu substrates

Dehm, Gerhard; Medres, B.; Shepeleva, L.; Scheu, Christina; Bamberger, Μ.; Mordike, B. L.; Mordike, Susanne; Ryk, G.; Halperin, G.; Etsion, I.

doi:10.1016/s0043-1648(98)00347-0

Cited by 49 publications

(18 citation statements)

References 4 publications

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“…It was then preplaced on the surface of cp Cu with thickness of 0.1 mm. The preplaced layer on cp Cu can avoid its high reflectivity [9,21,28] and improve laser absorption. The specimen was placed on an electric heat plate for preheating to 200 C hence reducing residual stress [29] and improving laser absorption.…”

Section: Specimens Preparationmentioning

confidence: 99%

Laser fabrication of W-reinforced Cu layers: I. Corrosion behavior in 3.5% NaCl solution and synthetic acid rain

Wong¹,

Kwok²,

Man

et al. 2016

Materials Chemistry and Physics

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Section: Specimens Preparationmentioning

confidence: 99%

Laser fabrication of W-reinforced Cu layers: I. Corrosion behavior in 3.5% NaCl solution and synthetic acid rain

Wong¹,

Kwok²,

Man

et al. 2016

Materials Chemistry and Physics

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“…In the past decades, laser cladding is used more and more to fabricate coatings to improve the wear resistance and other properties [8,9,10,11,12,13]. Dehma et al [14] fabricated a Ni-based cladding coating on Cu substrates. Yan et al [15] prepared a Co-based/TiC/CaF 2 self-lubricating composite coating on Cr–Zr–Cu mould.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Properties of Ni–Co Composite Cladding Coating on Mould Copper Plate

Liu

Gao

et al. 2019

Materials

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In this study, a Ni–Co composite coating was fabricated successively on a copper substrate by laser, and the microstructure and properties of the composite coating were studied. Our results show that the elements from Ni and Co alloy powder were uniformly distributed in the binding region, which obtained a good metallurgical bonding with the substrate. The microhardness of Co-based coatings was 646 HV0.1, which was approximately 7.6 times greater than the hardness of Cu substrate. The Ni-based coating hardness was a little lower than that of the Co-based coating, which was approximately 7.0 times higher than the hardness of Cu substrate. The Co-based coating was comprised of reinforced phases, such as Co, Ni–Cr–Co–Mo, M7C3 and {Fe, Ni}. The wear volume of Co-based coatings was approximately 0.164 mm3 after the sliding wear test at 60 min, which was only 4% of the substrate’s wear volume. Meanwhile, the heat shock resistance experiment was carried out at 800 °C for 75 times before the Ni–Co composite coating was peeled off. It was shown that this Ni–Co composite coating had good wear resistance and high temperature properties, which is helpful to improve the service life of a mould copper plate. It not only saves the economic cost of steel plants, but also improves the quality of slabs and products.

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“…The high thermal and electrical conductivity of copper and its alloys makes them interesting materials for applications in the metallurgical and electrical industries, e.g., in crystallizer used for continuous casting and rolling, commutators of electric motors and blast furnace tuyere [ 1 , 2 ]. However, low strength and poor slide wear resistance shorten the service life of copper alloys’ parts.…”

Section: Introductionmentioning

confidence: 99%

Microstructures Evolution and Micromechanics Features of Ni-Cr-Si Coatings Deposited on Copper by Laser Cladding

Zhang

2018

Materials

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Three Ni-Cr-Si coatings were synthesized on the surface of copper by laser cladding. The microstructures of the coatings were characterized by optical microscopy (OM), X-ray diffraction (XRD), and scanning electron microscopy (SEM) with an energy dispersive spectrometer (EDS). According to the analysis results of phase compositions, Gibbs free energy change and microstructures, the phases of three coatings appeared were Cr3Si+γ-Ni+Cuss (Coating 1, Ni-26Cr-29Si), Cr6Ni16Si7+Ni2Si+Cuss (Coating 2, Ni-10Cr-30Si) and Cr3Ni5Si2+Cr2Ni3+Cuss (Coating 3, Ni-29Cr-16Si). The crystal growth in the solidification process was analyzed with a modified model, which is a combination of Kurz-Giovanola-Trivedi (KGT) and Lipton-Kurz-Trivedi (LKT) models. The dendrite tip undercooling in Coating 2 was higher than those of Coating 1 and Coating 3. Well-developed dendrites were found in Coating 2. A modification of Hunt’s model was adopted to describe the morphological differences in the three coatings. The results show that Coating 1 was in the equiaxed dendrite region, while Coatings 2 and 3 were in the columnar dendrite region. The average friction coefficients of the three coatings were 0.45, 0.5 and 0.4, respectively. Obvious plastic deformation could be found in the subsurface zone of Coatings 2 and 3.

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Microstructure and tribological properties of Ni-based claddings on Cu substrates

Cited by 49 publications

References 4 publications

Laser fabrication of W-reinforced Cu layers: I. Corrosion behavior in 3.5% NaCl solution and synthetic acid rain

Laser fabrication of W-reinforced Cu layers: I. Corrosion behavior in 3.5% NaCl solution and synthetic acid rain

Microstructure and Properties of Ni–Co Composite Cladding Coating on Mould Copper Plate

Microstructures Evolution and Micromechanics Features of Ni-Cr-Si Coatings Deposited on Copper by Laser Cladding

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