Effect of palladium on the mechanical properties of Cu–Al intermetallic compounds

Lim, Adeline B.Y.; Xin, Long; Shen, Lu; Chen, Xi; Ramanujan, R.V.; Gan, Chee Lip; Zhong, Cheng

doi:10.1016/j.jallcom.2014.12.119

Cited by 22 publications

(9 citation statements)

References 14 publications

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“…Such behaviour has been seen previously during processing of Al-33 at.-% Cu compounds. [1][2][3][4] However, arc-sprayed Al-Cu coatings produced by twin arc spraying contained unreacted Cu and Al as well as Cu 9 Al 4 , CuAl 2 and CuAl. 11 It can be seen that phase formation could not be controlled effectively during arc spraying process (unlike APS process).…”

Section: Resultsmentioning

confidence: 99%

“…8 Arc melted and remelted CuAl 2 exhibited hardness value up to 6 GPa (about 600 HV). 4 The hardness of CuAl 2 phase formed after annealing of cold roll bonded Al/Cu bimetal sheet at 500°C for 3 h was reported to be between 550 and 650 HV. 16 In the Cu-Al ball bonds annealed at 500°C for 100 h, CuAl 2 phase exhibited the hardness of about 3.94 GPa (about 400 HV).…”

Section: Mechanical Properties Of the Coatingsmentioning

confidence: 99%

“…Copper-aluminium intermetallics have received attentions in recent years due to good physical, mechanical and electrochemical properties as well as low materials costs. [1][2][3][4] In this regard, the phase structure, electrochemical and electrical properties of cast CuAl 2 have been investigated. [5][6][7][8] It has been shown that this compound exhibited good corrosion resistance and high hardness.…”

Section: Introductionmentioning

confidence: 99%

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Processing and properties of CuAl₂ intermetallic coatings

Abbasi

Verdian

2017

Surface Engineering

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CuAl 2 intermetallic powders were consolidated using an atmospheric plasma spraying process. Based on X-ray diffractometry results, no phase change occurred during thermal spraying. The investigation of optical micrographs showed that about 7% porosity was present in the microstructure of the coatings. The coatings showed hardness value up to 575 HV(50 g). The polarisation tests and electrochemical spectroscopy measurements were utilised for electrochemical investigation of the coatings in 1 M H 2 SO 4 and 3.5% NaCl media. In H 2 SO 4 environment, the coated and uncoated samples showed similar corrosion rates. However, the coating showed a lower corrosion rate than the substrate in NaCl solution by an order of magnitude. Corrosion of the steel substrate occurred in the NaCl solution, no corrosion was observed in the H 2 SO 4 .

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Section: Resultsmentioning

confidence: 99%

Section: Mechanical Properties Of the Coatingsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Processing and properties of CuAl₂ intermetallic coatings

Abbasi

Verdian

2017

Surface Engineering

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“…At the same time, the diffusion rate of Cu shown in Figure 5 is higher than that of Al. According to the EDS element analysis shown in Figure 5a, and binary alloy phase diagram of Cu/Al [18], intermetallic compounds, such as CuAl 2 , CuAl, Cu 4 Al 3 , Cu 3 Al, and Cu 9 Al 4 , may be formed [19]. However, the CuAl 2 phase is the compound which has the lowest stable energy.…”

Section: Analysis Of Interface Structure and Chemical Compositionmentioning

confidence: 99%

Study on Interface Structure of Cu/Al Clad Plates by Roll Casting

Chang

Xie

Mao

et al. 2018

Metals

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Large scale Atomic/Molecular dynamic Parallel Simulator (LAMMPS) molecular dynamics simulation software was used to simulate the copper and aluminum atom diffusion and changes of interface during heating and cooling process of copper and aluminum composite panels. The structures of the interface were characterized through scanning electron microscope (SEM), X-ray diffraction (XRD), and transmission electron microscope (TEM), and the mechanical properties were also tested. The simulation results show that the diffusion rate of copper atom is higher than that of aluminum atom, and that the CuAl2 radial distribution function of the interface at 300 K is consistent with that of pure CuAl2 at room temperature. At 930 K, t = 50 ps Cu atoms spread at a distance of approximately four Al lattice constants around the Al layer, and Al atoms spread to about half a lattice constant distance to the Cu layer. The experimental results show that the thickness of the interface in copper–aluminum composite plate is about 1 μm, and only one kind of CuAl2 with tetragonal phase structure is generated in the interface, which corresponds with the result of molecular dynamics simulation.

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“…These composites are incorporated with different metal elements, such as Al, Be, and Ni, in various proportions in order to improve the mechanical properties [2,3]. Al is the most widely used metal in the industry, therefore, Cu-Al alloys are one of the most typical alloys, which have been employed in many studies [4][5][6][7]. For instance, aluminum bronze is a kind of Cu-based alloys that is synthesized using different compositions of Al powder [8,9].…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Densification of Cu–Al Mixed Metal Powder during Axial Compaction

Wang

Liu

et al. 2018

Metals

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The densification mechanism of Cu–Al mixed metal powder during a double-action die compaction was investigated by numerical simulation. The finite element method and experiment were performed to compare the effect of the forming method, such as single-action die compaction and double-action die compaction, on the properties of compact. The results showed that the latter could significantly raise the densification rate and were in good agreement with Van Der Zwan–Siskens compaction equation. The effects of the different initial packing structures on the properties of the compact were studied. The results showed that a high-performance compact could be obtained using a dense initial packing structure at a given compaction pressure. Additionally, the effects of the Al content and compaction pressure on the relative density and stress distribution were analyzed. It was observed that, with an increase in the Al content at a given compaction pressure, the relative density of the compact increased, whereas the stress decreased. Furthermore, when the Al content was fixed, the relative density and stress increased with increasing compaction pressure. The relationship between the relative density and the compaction pressure under different friction conditions was characterized and fitted according to the Van Der Zwan–Siskens compaction equation. The influence mechanisms of die wall friction on the compaction behavior were investigated. It was revealed that friction is a key factor that causes the inhomogeneity of the powder flow and stress distribution. Finally, the effects of the dwell time and height–diameter ratio on the densification behavior were analyzed, and it was found that an increase in the dwell time promoted the densification process, whereas an increase of the height–diameter ratio could hinder the process.

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Effect of palladium on the mechanical properties of Cu–Al intermetallic compounds

Cited by 22 publications

References 14 publications

Processing and properties of CuAl₂ intermetallic coatings

Processing and properties of CuAl₂ intermetallic coatings

Study on Interface Structure of Cu/Al Clad Plates by Roll Casting

Numerical Simulation of Densification of Cu–Al Mixed Metal Powder during Axial Compaction

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Effect of palladium on the mechanical properties of Cu–Al intermetallic compounds

Cited by 22 publications

References 14 publications

Processing and properties of CuAl2 intermetallic coatings

Processing and properties of CuAl2 intermetallic coatings

Study on Interface Structure of Cu/Al Clad Plates by Roll Casting

Numerical Simulation of Densification of Cu–Al Mixed Metal Powder during Axial Compaction

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Product

Resources

About

Processing and properties of CuAl₂ intermetallic coatings

Processing and properties of CuAl₂ intermetallic coatings