Limit for Controlling Stabilization of Cu Powder Prepared from Cu2o-H2O System

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Ultrafine dispersed copper powders were prepared from copper (I) oxide (Cu2O) slurry by a wet chemical reduction with hydrazine as a reductant. Palladium chloride (PdCl2) was used as a nucleator along with its polymer stabilizer, polyvinylpyrrolidone (PVP). Sodium pyrophosphate (Na4O7P2) was added as a surfactant. It was found that the use of Cu2O and Na4O7P2 exhibit very strong impact on dispersity of the prepared Cu powders. In this study, we indicate the critical conditions at which the particles aggregation still occurs even though the powders produced at high zeta potential resulted from an appropriate addition of Na4O7P2.

Info:

Periodical:

Materials Science Forum (Volumes 558-559)

Edited by:

S.-J.L. Kang, M.Y. Huh, N.M. Hwang, H. Homma, K. Ushioda and Y. Ikuhara

Pages:

741-746

Citation:

H. T. Hai et al., "Limit for Controlling Stabilization of Cu Powder Prepared from Cu2o-H2O System", Materials Science Forum, Vols. 558-559, pp. 741-746, 2007

Online since:

October 2007

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$38.00

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DOI: https://doi.org/10.1016/0026-0657(93)91684-p

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