The cementation technique for coating carbon fibres

Kulkarni, AG and Pai, BC and Balasubramanian, N (1979) The cementation technique for coating carbon fibres. Journal of Materials Science, 14. pp. 592-598. ISSN 0022-2461

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The cementation technique is used in a modified form where glacial acetic acid is added to the salt solution as an activating agent so that the displaced metal can wet the carbon fiber better. The feasibility of the technique is demonstrated on three types of carbon fibers. Copper, nickel and cobalt are deposited onto the carbon fiber from the corresponding salt solutions using four displacing agents, Zn, Mg, Al and Fe. To obtain uniform, continuous and adherent coatings, the following parameters are investigated and optimized: the metal ion solution concentration, the activation treatment of the fibers, temperature of the solution, time of deposition, effect of the reducing agent, and particle size of the reducing agent. The characterization of the coating is made on the basis of metallographic examination and tensile properties of the coated fibers. It is shown that by controlling the size of the reducing agent, acid concentration, solution concentration and temperature, uniform and adherent coatings can be obtained. The coating fibers are introduced into an aluminum matrix by an infiltration technique and are uniformly distributed in the composite

Item Type: Article
Additional Information: Copyright for this article belongs to Chapman and Hall Ltd.
Uncontrolled Keywords: Carbon fibres;Cementation;Metal coatings;Metal matrix composites;Metallizing;Acetic acid;Cobalt;Copper;Fiber strength;Nickel coatings;Wetting
Subjects: CHEMISTRY AND MATERIALS > Composite Materials
Depositing User: Ms. Alphones Mary
Date Deposited: 05 Jun 2006
Last Modified: 24 May 2010 04:12

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