Preparation of High-Purity Ultrafine Copper Powder in Mass-Production by Chemical Reduction Method: Taguchi Robust Design Optimization

Peng, Yu-Hsien; Lee, Ching-Hwa; Popuri, Srinivasa R.; Kumar, K. Nithesh

doi:10.1007/s11106-016-9818-8

Cited by 3 publications

(2 citation statements)

References 26 publications

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“…Figure 2b,c are SEM photographs of copper-coated SiC prepared by the direct hydration method and the glucose pre-reduction method, respectively. The reaction process of the two plating processes is different; while the reaction process of the hydrazine hydrate direct reduction method is shown in the Formula (1), and the reaction process of the glucose pre-reduction method is shown in the Formulas (2)-(4) [21][22][23]. As shown in Figure 2b, the copper particles formed by the hydrazine hydrate direct reduction method are agglomerated together while the distribution is loosely on the surface of the SiC particles.…”

Section: Materials Characterizationmentioning

confidence: 99%

Microstructures and Mechanical Properties of Cu-Coated SiC Particles Reinforced AZ61 Alloy Composites

2019

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The pure Cu coating was plated on the surface of silicon carbide particles (SiCP) by two different methods, hydrazine hydrate direct reduction method and hydrazine with glucose pre-reduction method. The hydrazine with glucose pre-reduction method is more suitable for Cu plating on the surface of SiCP in terms of morphology and microstructure. AZ61 composites reinforced with different volume fractions (3~15%) uncoated and Cu-coated SiCP were prepared by powder metallurgy followed by hot extrusion. The effect of Cu coating on the morphology of SiCP/AZ61 composite was analyzed by optical microscope (OM), scanning electron microscopy (SEM), energy dispersive spectrometer (EDS), electronic probe micro-analyzer (EPMA) and X-ray diffractometer (XRD). The properties of the composite were characterized by Brinell hardness tester and mechanical testing machine. The effects of Cu coating on the micro-hardness, tensile strength and elongation of SiCP/AZ61 composite were analyzed. The tensile strength of AZ61 composite reinforced with Cu-coated SiCP increased by 3.5~6.3% and the elongation increased by 7.4~35.0% compared with AZ61 composite reinforced with uncoated SiCP. Therefore, the Cu coating can ameliorate the microstructure and properties of the SiCP/AZ61 composite effectively, reduce the defect rate in the composite, and improve the hardness, relative density, tensile strength, elongation of the composite.

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Section: Materials Characterizationmentioning

confidence: 99%

Microstructures and Mechanical Properties of Cu-Coated SiC Particles Reinforced AZ61 Alloy Composites

2019

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“…Fine copper powder is produced by different methods: in the inert gas atmosphere, by means of electric blasting, through application of ammonia and sulfur acid solution, by the method of electrolysis and air classification [2][3][4][5][6][7][8][9][10]. One of the most commonly used methods is electrolysis from sulfuric acid solution, using which it is possible to produce the powder within a wide range of sizing: from 5 to 250 µm.…”

Section: Introductionmentioning

confidence: 99%

Fine Copper Powders Production

Agarova¹,

Yakovleva²,

Voinkov³

et al. 2021

DDF

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The article is devoted to the description of a method for producing electrolytic copper powder with an average particle size of 3 to 10 μm. In order to increase the proportion of the finely dispersed fraction during the electrolysis process, the composition of the electrolyte was changed. In particular, the content of chloride ions was increased from 6 to 53 mg/dm3. After the growth of the powder in industrial baths, its subsequent drying and sieving on vibrating screens, samples were obtained with a fraction of 5 μm content in the range from 3 to 38 %. Additionally, air classification of powders was carried out at various speeds of the classifier rotor from 800 to 2000 rpm. Based on the results of the study, the optimal ranges of the specific surface area and the size of the initial powder particles before classification, as well as the composition of the electrolyte and the operating modes of the classifier, were determined.

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Does the format of design information affect hazard recognition performance in construction hazard prevention through design reviews?

2020

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Preparation of High-Purity Ultrafine Copper Powder in Mass-Production by Chemical Reduction Method: Taguchi Robust Design Optimization

Cited by 3 publications

References 26 publications

Microstructures and Mechanical Properties of Cu-Coated SiC Particles Reinforced AZ61 Alloy Composites

Microstructures and Mechanical Properties of Cu-Coated SiC Particles Reinforced AZ61 Alloy Composites

Fine Copper Powders Production

Does the format of design information affect hazard recognition performance in construction hazard prevention through design reviews?

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