Microstructure and properties of a wear resistant Al-25Si-4Cu-1Mg coating prepared by supersonic plasma spraying

Dong, Tian-shun; Liu, Ming; Yang, Feng; Li, Guolu; Li, Xiaobing

doi:10.1007/s12613-019-1950-2

Cited by 9 publications

(3 citation statements)

References 14 publications

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“…Moreover, the Al-Si alloys are highly recyclable, making them more costeffective [16]. As a result, they are widely used in various industries, including automotive, aerospace, structural, shipbuilding, and packaging, for a variety of applications, such as engine cylinders, cylinder heads, compressor scrolls, aircraft stabilisers, crankcases, intake manifolds, cylinder blocks, cellular phone and domestic kitchen components, and more [17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Thermochemical modelling and mechanical property of the Al-7.6Si-xZr alloy

Biswas

Das

et al. 2023

Materials Science and Technology

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This study utilised the gravity casting method to modify hypoeutectic Al-7.6Si alloys with Zr at varying weight percentages (0.1%, 0.2%, and 0.3%). The unmodified alloy typically consists of a needle or platelike eutectic silicon within the dendritic α-Al phase. The addition of Zr increases the liquidus temperature of the alloy and results in the formation of ZrSi and ZrSi2 compounds, which act as nucleation sites for both the eutectic Si and α-Al grains. As a result, the needle or platelike eutectic silicon transforms into a fibrous structure with a more uniform distribution, and the α-Al phase becomes finer and globular. These microstructural changes lead to improved bulk hardness, ductility, and mechanical properties of the alloy.

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Section: Introductionmentioning

confidence: 99%

Thermochemical modelling and mechanical property of the Al-7.6Si-xZr alloy

Biswas

Das

et al. 2023

Materials Science and Technology

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“…Steel/copper clad metals are widely studied because they have applications ranging from functional coatings in the electrical and electronics industries, to adhesion promoting coatings, intermediate coatings for improving brightness and leveling effects in decorative/corrosion-protective coating systems, and purely decorative uses as a top coating [3,4]. Electroplating and electroless plating [2,5], cladding [6,7], cold sprayed coating [8][9][10], and casting [11] approaches have been widely used to produce copper-clad steel. Composite materials are more difficult to produce than single materials because of the diversity of their material properties.…”

Section: Introductionmentioning

confidence: 99%

Corrosion Behavior of Copper Bearing Steels and the Derived In-Situ Coating

Yan²,

Wang

et al. 2021

Metals

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Using a period immersion wet/dry cyclic corrosion test, in-situ copper-coated steels prepared by corroding copper-bearing steels were investigated in this study. The steel with a higher copper content (>3%) has a higher initial corrosion rate due to its obvious two-phase microstructure. The corrosion rates of all copper bearing steels tend to be stable after a certain time of corrosion. A copper-rich layer is formed between the matrix and the rust layer, which is due to the diffusion of copper from the rust layer to the metal surface. The copper’s stability under this corrosion condition led to the formation of a thin copper-rich film, which was uncovered after removing the rust by choosing appropriate descaling reagents. The copper coating was generated from the matrix itself during the corrosion process at 25 °C, which provided a new approach for producing in-situ composite materials without any bonding defect. It is found that the corrosion rate, corrosion time, and copper content in steel all affect the formation of copper-rich layer. In addition to the noble copper surface, the electrochemical corrosion test results show that the corrosion resistance of copper-coated steel has been significantly improved.

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“…Reinforcing powders are rapidly melted by a high energy density laser beam and then form coatings with good metallurgical bonding to a substrate, thus the materials surface properties are improved. Supersonic plasma spraying coating preparation can be conveniently and inexpensively operated, but the bonding strength of the coating is poor [14]. Electroplating can prepare thin coatings for surface modification, but industrial waste water produces environmental pollution [15].…”

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confidence: 99%

Microstructure, microhardness and corrosion resistance of laser cladding Al2O3@Ni composite coating on 304 stainless steel

2021

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The microstructure, microhardness and corrosion resistance of laser cladding Al 2 O 3 @Ni composite coating were investigated. The Al 2 O 3 @Ni core-shell metalceramic powders synthesized via electroless plating method were used as laser cladding materials. According to the results of scanning electron microscopy and energy dispersive spectrometer, the microstructure of the Al 2 O 3 @Ni composite coating gradually transitioned from columnar crystal to cellular crystal and equiaxed crystal along the bottom to the surface. Furthermore, the Ni particles and Al 2 O 3 particles separated when laser heating, then formed Ni metallurgical bonding layer and Al 2 O 3 ceramic layer, respectively. The microhardness of Al 2 O 3 @Ni composite coating was up to 917.0 HV, which was about 5.7 times that of 304 stainless steel. In addition, immersion and electrochemical tests revealed that Al 2 O 3 @Ni composite coating exhibited excellent corrosion resistance compared with 304 stainless steel. The corrosion current density of the Al 2 O 3 @Ni composite coating (36.493 lA cm -2 ) was about 67.0% lower than that of 304 stainless steel (110.592 lA cm -2 ). Meanwhile, the corrosion mechanism of Al 2 O 3 @Ni composite coating was revealed. Dense Al 2 O 3 @Ni composite coating can inhibit the penetration of Cland H ? , making the corrosion reaction difficult to occur. Instruction 304 stainless steel is extensively used in chemical plants, food processing and mechanical engineering due to a combination of excellent corrosion resistance, good processing performance and low cost [1, 2]. In most corrosive conditions, 304 stainless steel proves excellent corrosion resistance, because passive film forms on the surface, which can provide important protective properties [3]. However, many

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Microstructure and properties of a wear resistant Al-25Si-4Cu-1Mg coating prepared by supersonic plasma spraying

Cited by 9 publications

References 14 publications

Thermochemical modelling and mechanical property of the Al-7.6Si-xZr alloy

Thermochemical modelling and mechanical property of the Al-7.6Si-xZr alloy

Corrosion Behavior of Copper Bearing Steels and the Derived In-Situ Coating

Microstructure, microhardness and corrosion resistance of laser cladding Al2O3@Ni composite coating on 304 stainless steel

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