Effects of trace Te on the anti-welding property of Cu-30CrTe alloy contact material

Miao, B. F.; Xie, Jinglin; He, Jianping; Liu, Guoxun; Wang, Wenbin; Wang, Xiaojun

doi:10.1109/deiv.2012.6412484

Cited by 7 publications

(2 citation statements)

References 11 publications

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“…Cu can be used in contact applications either as the pure metal (applications where arcing and welding are not severe), or in the form of alloys or compounds made by powder metallurgy. Therefore, dierent types of Cubased composite electrical contact materials have been developed [14,15]. Cu-based electrical contact materials are used in a variety of applications, such as arcing contacts in oil switches, current carrying contacts, vacuum interrupter, oil-circuit breakers, arcing tips, contactors, vacuum switches, automotive starters, instruments, fuel pumps, welding machines, industrial truck motors, automotive heaters, antenna motors and generators [11].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Milling Speed on Particle Size and Morphology of Cu25W Composite Powder

Biyik

Aydın

2015

Acta Phys. Pol. A

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In this study, the eect of milling speed on particle size and morphology of Cu25W composite powder produced by high-energy ball milling was investigated. For this aim, commercial elemental copper and tungsten powders were milled in a planetary-type ball mill for dierent milling durations. Ball-to-powder weight ratio was selected as 10:1. Three dierent milling speeds, namely 200, 300, and 400 rpm were used throughout the tests. In order to avoid agglomeration and to decrease the tendency of cold welding among powder particles, stearic acid in amount of 2 wt.% was used as a process control agent. The morphological and microstructural evolution of the milled powders was evaluated by scanning electron microscopy. In addition, the variation of particle size and powder morphology as a function of milling duration was determined. As a result of this eort, the milling duration was found to have strong eect on the structural evolution of the powder, and the optimum particle size as a function of milling speed was determined.

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Section: Introductionmentioning

confidence: 99%

The Effect of Milling Speed on Particle Size and Morphology of Cu25W Composite Powder

Biyik

Aydın

2015

Acta Phys. Pol. A

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“…Hence, different types of copperbased composite electrical contact materials have been developed in order to meet the requirements for various applications [15,16]. Copper-based electrical contact materials are used in a variety of applications, such as arcing contacts in oil switches, current carrying contacts, vacuum interrupter, oil-circuit breakers, arcing tips, contactors, vacuum switches, automotive starters, instruments, fuel pumps, welding machines, industrial truck motors, automotive heaters, antenna motors and generators, etc.…”

Section: Introductionmentioning

confidence: 99%

The effect of the amount of process control agent on the properties of Cu25W composite powder

Biyik

Aydın

2014

WIT Transactions on the Built Environment

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This study is based upon the optimization of production parameters of Cu25W electrical contact material. Commercial elemental copper (Cu) and tungsten (W) powders were synthesized to produce Cu25W composite powder by mechanical alloying technique at various amounts of stearic acid via using a planetary type ball mill. The effect of amount of stearic acid on production of Cu25W composite powder was evaluated. In order to achieve true alloying among powder particles, it is necessary to establish a balance between cold welding and fracturing. Hence, different types of process control agents (PCA) were used to reduce excessive cold welding. Here, the effect of various amounts of stearic acid, namely 0, 0.5, 1, 2 and 3 wt.% on morphology and some properties of Cu25W composite powder were studied. The microstructural evolution of the milled powders was characterized by using scanning electron microscopy. The test results showed that the morphology and particle size distribution of the milled powders were changed considerably depending upon the variable amount of PCA. In addition, holding the same milling duration, different microhardness values were obtained for various amounts of PCA.

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Arc erosion resistance of CuCrMo films deposited via magnetron sputtering

Miao

Qian

et al. 2021

Mater. Res. Express

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Copper-chromium (CuCr) alloys are widely used as electrical contact materials, and their arc erosion resistance can be improved by reducing the sizes of the Cu and Cr phases or by adding Mo. In this study, supersaturation solid solutions of CuCr and CuCrMo films were prepared via magnetron sputtering. After annealing at 773 K, the CuCr and CuCrMo films are composed of a small Cu-rich face-centred cubic phase and a Cr-rich body-centred cubic phase. Meanwhile, the addition of Mo reduces the diffusion rate during annealing. The lattice distortion of the CuCrMo thin film exceeds that of the CuCr film, and the elastic modulus and hardness increase. Compared with those of the CuCr film, the erosion area of the CuCrMo film is larger, and the depth of the erosion pit is lower. The arc erosion experiment proved that CuCrMo films exhibit satisfactory arc erosion resistance.

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Effects of trace Te on the anti-welding property of Cu-30CrTe alloy contact material

Cited by 7 publications

References 11 publications

The Effect of Milling Speed on Particle Size and Morphology of Cu25W Composite Powder

The Effect of Milling Speed on Particle Size and Morphology of Cu25W Composite Powder

The effect of the amount of process control agent on the properties of Cu25W composite powder

Arc erosion resistance of CuCrMo films deposited via magnetron sputtering

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