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Preparation of cast aluminum alloy-mica particle composites (1980)

Bhat, R. T. ; Deonath, MR. ; Rohatgi, P. K.

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Publication Date: 2011-08-17

Description: A method for making aluminum-mica particle composites is presented in which mica particles are stirred in molten aluminum alloys followed by casting in permanent molds. Magnesium is added either as an alloying element or in the form of pieces to the surface of the alloy melts to disperse up to 3 wt% mica powders in the melts and to obtain high recoveries of mica in the castings. The mechanical properties of the aluminum alloy-mica composite decrease with increasing mica content; however, even at 2.2% it has a tensile strength of 14.22 kg/sq mm with 1.1% elongation, a compression strength of 42.61 kg/sq mm, and an impact strength of 0.30 kgm/sq cm. Cryogenic and self-lubricating bearing are mentioned applications.

Keywords: COMPOSITE MATERIALS

Type: Journal of Materials Science; 15; May 1980

Format: text

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