Interpenetrating Al2O3-TiAl3 alloys produced by reactive infiltration

Authors
Wagner, F Garcia, DE Krupp, A Claussen, N
Citation
F. Wagner et al., Interpenetrating Al2O3-TiAl3 alloys produced by reactive infiltration, J EUR CERAM, 19(13-14), 1999, pp. 2449-2453
Citations number
16
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
ISSN journal
09552219 → ACNP
Volume
19
Issue
13-14
Year of publication
1999
Pages
2449 - 2453
Database
ISI
SICI code
0955-2219(1999)19:13-14<2449:IAAPBR>2.0.ZU;2-K
Abstract
Dense alumina-TiAl3 composites with interpenetrating networks have been fab ricated by reactive gas-pressure infiltration and squeeze casting of Al int o sintered porous preforms containing 30 vol% TiO2 and 70 vol% Al2O3. Stren gth of up to 543 +/- 21 MPa with corresponding fracture toughness of 8.6 +/ - 0.4 MPa root m and hardness of HV10=565 +/- 27 have been obtained. The pr esent paper discusses processing parameters such as particle size of oxide precursor and preform porosity which control microstructural development an d mechanical properties of the composites. (C) 1999 Elsevier Science Ltd. A ll rights reserved.