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Title: Effect of CeO{sub 2} addition on the properties of FeAl based alloy produced by mechanical alloying technique

Iron aluminides based on FeAl is notable for their low materials cost, ease of fabrication and good corrosion, suffixation and oxidation resistance. However, the application based on these unique properties still require the development of Fe-Al based alloy since it shows some drawbacks such as a lack of high temperature strength and low ductility. To improve the mechanical properties of FeAl based alloy, ceria (CeO{sub 2}) will be added to this compound. FeAl based alloy produced by the mechanical alloying (MA) technique. The developed specimens then assessed with respect to oxidation behaviour in high temperature, scale microstructure and hardness. The surface morphologies of the alloy evaluated and observed using scanning electron microscopy (SEM) with an energy dispersive X-ray spectroscopy (EDX). The phase structures of oxide scale formed on them were identified by X-ray diffraction (XRD). The results found that the FeAl intermetallic compound containing CeO{sub 2} 0.5 wt.% is less pores and CeO{sub 2} 1.0 wt.% is more homogen in powder and solid form, higher hardness and increase in their resistance to oxidation behaviour in high temperature compared with another percentage of CeO{sub 2}.
Authors:
; ; ; ; ;  [1]
  1. Research Center for Physics, Indonesian Institute of Sciences (LIPI) Gd. 440, Kawasan Puspiptek Serpong Tangerang 15314 Banten (Indonesia)
Publication Date:
OSTI Identifier:
22218084
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1555; Journal Issue: 1; Conference: LCTAP 2012: International conference on theoretical and applied physics, Kalimantan (Indonesia), 19-20 Oct 2012; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALUMINIUM ALLOYS; CERIUM OXIDES; CHEMICAL ANALYSIS; COMPARATIVE EVALUATIONS; CORROSION; CORROSION RESISTANCE; CRYSTAL STRUCTURE; DUCTILITY; HARDNESS; INTERMETALLIC COMPOUNDS; IRON; IRON ALLOYS; MICROSTRUCTURE; MORPHOLOGY; OXIDATION; POWDERS; SCANNING ELECTRON MICROSCOPY; SURFACES; X-RAY DIFFRACTION; X-RAY SPECTROSCOPY