Hydrogen Reduction and Sintering Behavior of Al2O3/CuO Powder Mixtures Prepared from Different Raw Powders

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The reduction behavior of Al2O3/CuO powder mixtures, prepared from Al2O3/CuO or Al2O3/Cu-nitrate, was investigated by using thermogravimetry and hygrometry. Also, the influence of powder characteristics on the microstructure and properties of hot-pressed composites is analyzed. It was found that the hydrogen reduction process of nano-sized oxide particles and properties of sintered composites strongly depends on their distribution and size in composite powder. The formation mechanisms of nano-sized Cu dispersions are discussed based on the powder characteristics and reduction kinetics. In addition, the dependence of the microstructure and mechanical properties of hot-pressed composites on powder characteristics is discussed in terms of the initial size and distribution of Cu particles.

Info:

Periodical:

Key Engineering Materials (Volumes 317-318)

Edited by:

T. Ohji, T. Sekino and K. Niihara

Pages:

181-184

DOI:

10.4028/www.scientific.net/KEM.317-318.181

Citation:

S. T. Oh and S. J. Yoon, "Hydrogen Reduction and Sintering Behavior of Al2O3/CuO Powder Mixtures Prepared from Different Raw Powders", Key Engineering Materials, Vols. 317-318, pp. 181-184, 2006

Online since:

August 2006

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Price:

$35.00

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