Comparison of effective parameters for copper powder production via electrorefining and electrowinning cells and improvement using DOE methods

Akbarzadeh, Ebrahim; Shakib, Sayyed Esmaeil

doi:10.1007/s12613-011-0504-z

Cited by 9 publications

(3 citation statements)

References 21 publications

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“…Powder metallurgy is usually employed to produce small sized copper-based parts that are used in electrical switches, contacter components, connectors, heatsinks, and brushes and is widely used in electronic packaging industry [15,[27][28][29][30][31]. It is highly possible to produce components from Cu-Ti alloys through a powder metallurgical route.…”

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confidence: 99%

Characterization of Cu–Ti powder metallurgical materials

Karakulak

2017

Int J Miner Metall Mater

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Powder metallurgical Cu-Ti alloys with different titanium additions produced by hot pressing were characterizied by optical microscopy, scanning electron microscopy, X-ray diffraction analysis, and hardness, wear and bending tests. The addition of titanium to copper caused the formation of different intermetallic layers around the titanium particles. The titanium content of the intermetallics decreased from the center of the particle to the copper matrix. The hardness, wear resistance and bending strength of the materials increased with increasing Ti content, whereas strain in bending test decreased. Worn surface analyses showed that different wear mechanisms were active during the wear tests of specimens with different chemical compositions. Changes in properties of materials with titanium addition were explained by high hardness of different Cu-Ti intermetallic phases.

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confidence: 99%

Characterization of Cu–Ti powder metallurgical materials

Karakulak

2017

Int J Miner Metall Mater

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“…The main and interaction effects have been analyzed by Taguchi design of experiment to find out the effect of carbon fiber, load and speed of sliding and their percentage contribution on wear parameters of Al/Csf composite. The similar studies on wear properties using the design of experiment method were conducted with interesting and applicable results [13,14]. Friction and wear behavior of the developed composites was discussed.…”

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confidence: 94%

Orthogonal experimental design applied for wear characterization of aluminum/Csf metal composite fabricated by the thixomixing method

2015

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High silicon content aluminum alloy (hypereutectic) possess good tribological characteristics with low coefficients of friction, when embedded with short carbon fiber (Csf), making this composite a good material choice where good wear and high strength properties are required in light weight components..There is no previously published information available, to the knowledge of the authors, regarding the influence of wear parameters and their interactions on the tribological behavior of Csf reinforced metal matrix composites. In this study a Taguchi design of experiment (DoE) was conducted to optimize and analyze the effects of the wear parameters on the tribological properties of Al/Csf metal matrix composite.A novel thixomixing method which was used to process the metal within the semisolid state was employed to embed short carbon fibers homogenously into the metal matrix. The influences of the sliding speed, applied load and volume fraction, of Csf on the specific wear rate and coefficient of friction were examined, with each of these input parameters tested at three levels(0, 4.2, 8.1 %vol.). The results were indicated that Al/Csf composite had better tribological properties than Al alloy due to which contains carbon as solid lubricant. According to the statistical analysis, the influence of volume fraction of carbon fiber on wear parameters was ranked first; so the load and sliding speed are at the following rankings. The contribution percentage for each parameter was determined by the analysis of variance. The relatively good interfacial adherence of carbon fiber and matrix alloy were demonstrated. The coherent and adherent graphite-rich layer on the worn surface was characterized using scanning electron microscopy (SEM).

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“…the solution to this problem may be related to modification of the electrolyte composition or the physical parameters of the electrodeposition process. in the scientific literature, the influence of current density, electrolyte composition, and concentration [13][14][15][16] on the efficiency of the electrolysis process has been considered. it is also well known, that the temperature and mixing of the solution also affect the kinetics of chemical and electrochemical reactions, which is confirmed by a literature review [14].…”

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confidence: 99%

Archives of Metallurgy and Materials

2022

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ElEctrochEmical mEthod of coppEr powdEr SynthESiS on rotating ElEctrodE in thE prESEncE of SurfactantSthis paper presents a method of synthesizing copper powders by electrochemical method with the use of a rotating working electrode. the influence of the rotation speed of the working electrode, the current density, the concentration of copper ions, and the addition of ethylene glycol on the shape, size, and size distribution of the obtained powders were investigated. Properties of the synthesized powders were characterized by scanning electron microscopy (SEM) and X-ray powder diffractometry (XRD). it has been shown that it is possible to obtain copper powders with a size of 1 µm by an electrochemical method using the rotary cathode, in sulphate bath with addition of ethylene glycol as a surfactant. increasing current density causes a decrease in the average size of the obtained powder particles. the addition of 2.5% of ethylene glycol prevents the formation of dendritic powders. the change in the concentration of copper ions in the range from 0.01 to 0.15 mol/dm 3 in the electrolyte did not show any significant effect on the size of obtained particles. however, higher concentrations of copper limiting the presence of dendritic-shape particles. changing the speed of rotation of the electrode affects both the size and the shape of synthesized copper powder. For the rotational speed of the electrode of 115 rpm, the obtained powders have a size distribution in the range of 0-3 µm and an average particle size of 1 µm. the particles had a polygonal shape with an agglomeration tendency.

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Comparison of effective parameters for copper powder production via electrorefining and electrowinning cells and improvement using DOE methods

Cited by 9 publications

References 21 publications

Characterization of Cu–Ti powder metallurgical materials

Characterization of Cu–Ti powder metallurgical materials

Orthogonal experimental design applied for wear characterization of aluminum/Csf metal composite fabricated by the thixomixing method

Archives of Metallurgy and Materials

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