Interpenetrating Al2O3-TiAl3 alloys produced by reactive infiltration

Dense alumina-TiAl3 composites with interpenetrating networks were fabricated by reactive gas-pressure infiltration and squeeze casting of Al into sintered porous preforms containing 30 vol% TiO2 and 70 vol% Al2O3. Strength of up to about 543 MPa with corresponding fracture toughness of 8.6 MPa.m1/2...

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Bibliographic Details
Published inJournal of the European Ceramic Society Vol. 19; no. 13-14; pp. 2449 - 2453
Main Authors WAGNER, F, GARCIA, D. E, KRUPP, A, CLAUSSEN, N
Format Conference Proceeding Journal Article
LanguageEnglish
Published Oxford Elsevier 01.01.1999
Subjects
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
Exact sciences and technology
Metals. Metallurgy
Miscellaneous
Powder metallurgy. Composite materials
Production techniques
Technical ceramics
Technology
Aluminium base alloys
Intermetallic compound
Mechanical properties
Experimental study
Oxide ceramics
Composite material
Reaction sintering
Interpenetrating network
Titanium Alloys
Infiltration
Manufacturing
Microstructure
Alumina
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Summary:Dense alumina-TiAl3 composites with interpenetrating networks were fabricated by reactive gas-pressure infiltration and squeeze casting of Al into sintered porous preforms containing 30 vol% TiO2 and 70 vol% Al2O3. Strength of up to about 543 MPa with corresponding fracture toughness of 8.6 MPa.m1/2 and hardness 565 were obtained. The processing parameters such as particle size of oxide precursor and preform porosity which control microstructural development and mechanical properties of the composites are discussed. 16 refs.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:0955-2219
1873-619X
DOI:10.1016/s0955-2219(99)00133-8