Copper coating on graphite particles (for dispersion in cast aluminum alloys)

Pai, BC and Rohatgi, PK (1975) Copper coating on graphite particles (for dispersion in cast aluminum alloys). Materials Science and Engineering, 21 . pp. 161-167.

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Abstract

Experiments were carried out to determine the optimal coating conditions for obtaining 2-5 micron thick continuous coatings of copper on 2-200 micron diam graphite particles using aqueous and supersaturated copper sulfate solutions by cementation processes. Both methods required activation of the graphite particles through heating at 380 C for 1 h in conjunction with addition of 0.2 vol % glacial acetic acid to improve graphite wettability. For the aqueous solution method, best results were attained with 0.2 M CuSO4.5H2O at 25 C. For the supersaturated solution method, best coatings were obtained with a CuSO4.5H2O/water ratio of 7 at the beginning of the reaction. Copper-coated graphite particles were successfully dispersed in Al-base alloys to obtain cast graphite aluminum alloys.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to Elsevier Publishers Ltd.
Uncontrolled Keywords: Aluminum alloys;Cast alloys;Copper;Graphite;metal coatings; Metal matrix composites;Acetic acid;aqueous solutions; Cemetation;Sulfates;Supersaturation
Subjects: CHEMISTRY AND MATERIALS > Composite Materials
Division/Department: Materials Science Division, Materials Science Division
Depositing User: M/S ICAST NAL
Date Deposited: 31 Jan 2007
Last Modified: 24 May 2010 09:54
URI: http://nal-ir.nal.res.in/id/eprint/3879

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