Effect of interface behavior between particles on properties of pure Al powder compacts by spark plasma sintering

Citation
Gq. Xie et al., Effect of interface behavior between particles on properties of pure Al powder compacts by spark plasma sintering, MATER TRANS, 42(9), 2001, pp. 1846-1849
Citations number
11
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Material Science & Engineering
Journal title
MATERIALS TRANSACTIONS
ISSN journal
1345-9678 → ACNP
Volume
42
Issue
9
Year of publication
2001
Pages
1846 - 1849
Database
ISI
SICI code
1345-9678(200109)42:9<1846:EOIBBP>2.0.ZU;2-A
Abstract
Pure Al powder was sintered by spark plasma sintering (SPS) process at vari ous sintering temperatures and loading pressures. The density, electrical r esistivity, tensile properties and microstructure of powder compacts were i nvestigated, The powder compacts with the similar properties as base alumin um metal was obtained at sintering temperature above 873 K, loading pressur e above 23.5 MPa. For the powder compacts with the similar density but with the large difference in the electrical resistivity and tensile properties, the interfaces between Al powder particles were investigated using high re solution transmission electron microscopy (HRTEM) and energy dispersive X-r ay spectroscopy (EDS). Two types of interfaces, with metal/metal bonding an d metal/oxide film layer/metal bonding, were observed in Al powder compacts . The properties of powder compacts were mainly subject to the behavior of oxide film between the powder particles.