Effect of Carbon on the Electrical Properties of Copper Oxide-Based Bulk Composites

Kalinin, Yu. E.; Kashirin, M. A.; Makagonov, V. A.; Pankov, S. Yu.; Ситников, А. В.

doi:10.1134/s1063783418040133

Cited by 3 publications

(3 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Copper matrix composites are commonly used as current-carrying friction materials, and the copper matrix of the three-dimensional network structure satisfies the requirements of electrical conductivity, enhances the phase lubrication, and improves the friction and wear performance [6,7,8,9]. Since the gas oxide generated after oxidation does not affect the subsequent conduction, and can prevent the oxidation of copper [10], sp2 hybrid carbon materials, such as graphite [11], carbon fiber [12], or carbon nanotube [13] are common reinforcing phases.…”

Section: Introductionmentioning

confidence: 99%

Effect of Carbon Content on Friction and Wear Properties of Copper Matrix Composites at High Speed Current-Carrying

Yang

Zhang

et al. 2019

Materials

View full text Add to dashboard Cite

The copper matrix composites were prepared by spark plasma sintering (SPS). The current-carrying friction and wear tests were carried out on a self-made HST-100 high-speed current-carrying friction and wear tester, and the effect of the graphite content on the current-carrying friction and wear properties of the composite material was studied. The results show that with an increase in graphite content, the average friction coefficient and wear rate of the two materials decreased significantly, the fluctuation amplitude of the friction coefficient was also significantly reduced, and the average friction coefficient of copper-coated graphite composite with graphite content of 10 wt.% was 0.100; when the graphite content was the same and more than 5.0 wt.%, the average friction coefficient and wear rate of copper–graphite composites were slightly higher than copper–copper-coated graphite composites; the current-carrying efficiency and current-carrying stability of the copper matrix composite were obviously higher than that of copper material; there was a mechanical wear area and arc erosion area on the wear surface of the composites, with the increase in graphite content, the adherence and the tear of the mechanical wear area weakened, the rolling, plastic deformation increased, and the surface roughness decreased obviously. The surface roughness of the wear surface of copper–copper-coated graphite composites with graphite content of 10 wt.% was 3.17 μm. The forms of arc erosion included melting and splashing, and were mainly distributed in the friction exit area.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of Carbon Content on Friction and Wear Properties of Copper Matrix Composites at High Speed Current-Carrying

Yang

Zhang

et al. 2019

Materials

View full text Add to dashboard Cite

show abstract

“…The dependence of the thermoelectric power factor P on the carbon filler content for the CuO -C 60 significantly different from the dependence of the CuO -CNF composites (Fig. 2) and CuO-based composites, described in [8].…”

Section: Resultsmentioning

confidence: 54%

Effect of Carbon on the Thermoelectrical Properties of Copper Oxide-Based Composites

Kalinin¹,

Kashirin²,

Makagonov³

2019

dteees

View full text Add to dashboard Cite

The effect of carbon filler on the electrical resistance, thermopower and thermoelectric power factor of copper oxide-based composites has been studied. It is established, that thermoelectrical properties of investigated composites are determinated by interaction between filler and matrix materials at phase boundaries. This interraction leads to changes in the energy spectrum of charge carriers. It is found that in composites CuO -CNF (carbon nanofibers) the dependences of the electrical resistivity and the thermopower on the filler concentration are characteristic by s -like curves that are typical for percolation systems. While using fullerene as filler material the dependences of the electrical resistivity and the thermopower on the filler concentration cannot be explain within percolation theory.

show abstract

“…where C is the volume concentration of pores. Due to the fact that copper oxide is a semiconductor structure [17], the calculation is given for a temperature of 1000 K. In this case, depending on the method of preparation, copper monoxide can have both p-and n-type conductivity.…”

Section: Methods For Calculating Transition Resistancementioning

confidence: 99%

Analysis of the Transient Contact Resistance of Composite Copper-Graphite Material Obtained Using Plasma Spraying Technology

Derevyankin

Frolov

2021

MSF

View full text Add to dashboard Cite

The article is devoted to the analysis of the internal structure and properties of a copper-graphite coating applied to a copper electrode. The article provides a calculation of the transient contact resistance of electrodes with a coating obtained using plasma spraying technology. Copper-graphite powder with high arc resistance was used as a spraying substance. Coated electrodes were tested for erosion resistance by an arc at currents of several kiloamperes. The aim of the work is to determine the effect of the composition and internal structure of the coating on the transient processes in the contact gap.

show abstract

Effect of Carbon on the Electrical Properties of Copper Oxide-Based Bulk Composites

Cited by 3 publications

References 21 publications

Effect of Carbon Content on Friction and Wear Properties of Copper Matrix Composites at High Speed Current-Carrying

Effect of Carbon Content on Friction and Wear Properties of Copper Matrix Composites at High Speed Current-Carrying

Effect of Carbon on the Thermoelectrical Properties of Copper Oxide-Based Composites

Analysis of the Transient Contact Resistance of Composite Copper-Graphite Material Obtained Using Plasma Spraying Technology

Contact Info

Product

Resources

About