Synthesis of high-purity polycrystalline Ti3AlC2 through pulse discharge sintering Ti/Al/TiC powders

Powders of Ti, Al and TiC were mixed as starting materials for the synthesis of ternary compound Ti3AlC2 at 1200-1400 deg C by using pulse discharge sintering (PDS) technique. The fully dense and almost single-phase polycrystalline Ti3AlC2 was obtained at 1300 deg C for 15 min, when the molar ratio...

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Bibliographic Details
Published inJournal of alloys and compounds Vol. 456; no. 1-2; pp. 456 - 460
Main Authors YONG ZOU, ZHENGMING SUN, HASHIMOTO, Hitoshi, TADA, Shuji
Format Journal Article
LanguageEnglish
Published Lausanne Elsevier 29.05.2008
Subjects
Cross-disciplinary physics: materials science; rheology
Exact sciences and technology
Materials science
Materials synthesis; materials processing
Physics
Reaction sintering
Grain size
Scanning electron microscopy
Synthesis
Single phase
Aluminium Titanium Carbides
Pulse discharge sintering
Polycrystals
XRD
Microstructure
Density
Ti3AlC2
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Summary:Powders of Ti, Al and TiC were mixed as starting materials for the synthesis of ternary compound Ti3AlC2 at 1200-1400 deg C by using pulse discharge sintering (PDS) technique. The fully dense and almost single-phase polycrystalline Ti3AlC2 was obtained at 1300 deg C for 15 min, when the molar ratio of the starting powder mixture was selected to be Ti:Al:TiC = 2:2:3. The typical microstructure of Ti3AlC2 was found to consist of plate-like grains with size of about 3-5 mum in width and 20-50 mum in length. The intermediate phases of Ti3Al, TiAl and Ti2AlC were found during the reactive sintering process and the reactions for the Ti3AlC2 phase formation were proposed.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2007.02.105