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Oxidation of pure aluminium granules during in-situ melting

Saleh, Aslinda and Idris, Mohd Hasbullah (2015) Oxidation of pure aluminium granules during in-situ melting. In: 2nd International Materials, Industrial & Manufacturing Engineering Conference (MIMEC 2015), 4-6 February 2015, Bali Nusa Dua Convention Center, Bali, Indonesia.

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Abstract

Oxidation behaviour of in-situ melted pure aluminium was investigated. The granules were heated in ceramic investment casting moulds between 700 and 850oC, for the duration of 30 and 60 min in atmospheric air using high temperature muffle furnace. The product was visually inspected macroscopically for the geometry and appearance. Scanning electron microscope (SEM) together with energy dispersive x-ray spectroscopy (EDS) was employed to analyse the oxidation characteristics of the product. Macroscopically, the granules failed to melt and unable to produce a casting even when the temperature was increased to 850oC. The surface of the granule experienced oxidation and spalling. Both temperature and heating duration were found to influence geometry and appearance of the product and also oxidation behaviour. The oxide layer encapsulated the granule during investment casting of Al granules by in-situ melting technique was Al2O3

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: aluminium; oxidation; in-situ melting
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials
Divisions: Faculty of Mechanical and Manufacturing Engineering > Department of Manufacturing and Industrial Engineering
Depositing User: Mrs. Nurhayati Ali
Date Deposited: 31 May 2015 08:18
Last Modified: 31 May 2015 08:18
URI: http://eprints.uthm.edu.my/id/eprint/6847
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