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Fine Copper Powders Production
Defect and Diffusion Forum, 2021The 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
Natalia E. Agarova +3 more
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Two-Layer Copper-Based Powder Electrocontact
Inorganic Materials: Applied Research, 2021The influence of various schemes of pressure treatment (pressing, rolling) and modes of heat treatment of powder mixtures on the service properties and adhesion strength of the working and current-carrying layers of electrical contacts with a conductivity of at least 75 % of the copper conductivity was investigated.
A. G. Meilakh +3 more
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Soviet Powder Metallurgy and Metal Ceramics, 1981
For the first time in the Soviet Union pilot-plant batches of copper powder have been produced by the method of atomization of melts with water under high pressure. The powder produced is characterized by increased apparent density and flowability. The best compressibility (2–6 tons/cm2) is exhibited by the powder after annealing.
A. N. Karibyan +8 more
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For the first time in the Soviet Union pilot-plant batches of copper powder have been produced by the method of atomization of melts with water under high pressure. The powder produced is characterized by increased apparent density and flowability. The best compressibility (2–6 tons/cm2) is exhibited by the powder after annealing.
A. N. Karibyan +8 more
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Flowability of Electrolytic Copper Powder
Materials Science Forum, 2005The surface structure of powder particles, which allows free flow of copper powder, was examined. It has been shown that a sufficiently dense surface structure which permits free flow will be obtained if apparent density is higher than 2.2 – 2.3 g/cm3.
Pavlović, Miomir +4 more
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Copper Powder Metallurgy Products
1990Abstract This article briefly reviews the subject of copper-base powder-metallurgy (P/M) products in terms of powder production methods (atomization, oxide reduction, electrolysis, and hydrometallurgy) and the product properties/consolidation practices of the major applications.
Erhard Klar, David F. Berry
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Copper plating of SmCo5 powder
Soviet Powder Metallurgy and Metal Ceramics, 19761. A study was made of the effects of process parameters in the deposition of copper on SmCo5 powder particles by the contact method upon the yield of copper into the coating. 2. It was established that the copper content of the powder is strongly affected by the pH of the working cupric chloride solution and its concentration; the ...
E. M. Aleksandrov +3 more
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Electroless tinning of copper powders
Soviet Powder Metallurgy and Metal Ceramics, 1979A study was made of the tinning of copper powders from solutions. Under optimum conditions (duration 10–15 min, temperature 40°C) the process enables a tinned copper powder to be obtained of any desired tin content.
V. G. Mel'nikov +3 more
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Ultrasonic irradiation of copper powder
Chemistry of Materials, 1989Ultrasonic irradiation enhances the reactivity of metal surfaces. Because of this, the sonochemical activation of various metals has become a routine synthetic technique. The mechanisms of heterogeneous sonochemistry, however, remain largely unexplored.
Kenneth S. Suslick +2 more
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Hot-Forged Copper Powder Compacts
Powder Metallurgy, 1976The effects of powder size, preform density, sintering treatment, preheat temperature, ..forging rate, and forging load on the properties and structure of hotforged copper compacts have been investigated. The most important effect is produced by the die temperature, irrespective of the preheat temperature, because of the chilling of the Cu preform ...
R. W. Evans, G. M. McColvin
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Iron-copper metal powder filters
Soviet Powder Metallurgy and Metal Ceramics, 19631. The testing of various methods of activating sintering of porous iron showed that the best permeability is obtained by alloying iron with copper. An addition of about 10% of copper improves the permeability 2–3 times (sintering temperature 1100–1150°C, duration 2 h). 2. The study was concerned with special features of mixing, pressing,
R. A. Andrievskii, M. A. Dmitrieva
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