PROPERTIES OF VERY FINE ALUMINUM BORIDE AND BOROCARBIDE POWDERS AND ALSO HOT-PRESSED MATERIALS BASED ON THEM

Authors
KHARLAMOV AI KIRILLOVA NV ZAITSEVA ZA
Citation
Ai. Kharlamov et al., PROPERTIES OF VERY FINE ALUMINUM BORIDE AND BOROCARBIDE POWDERS AND ALSO HOT-PRESSED MATERIALS BASED ON THEM, Powder metallurgy and metal ceramics, 34(5-6), 1995, pp. 229-238
Citations number
16
Categorie Soggetti
Material Science, Ceramics","Metallurgy & Metallurigical Engineering
Journal title
Powder metallurgy and metal ceramics → ACNP
ISSN journal
10681302
Volume
34
Issue
5-6
Year of publication
1995
Pages
229 - 238
Database
ISI
SICI code
1068-1302(1995)34:5-6<229:POVFAB>2.0.ZU;2-G
Abstract
Using very fine (< 2 mu m) AlB2, alpha-AlB12, Al3B48C2 and Al8B4C7 pow ders synthesized from simple substances a study is made of the oxidati on of aluminum borides and borocarbides in air and liquid reagents. Th eir microhardness and electrical conductivity are measured using hot-p ressed specimens. In order of decreasing reducibility the boron-contai ning aluminum phases are placed as follows: AlB2-Al8B4C7-B-AlB12-Al3B4 8C2. In AlB12 and Al3B48C2 specimens after high-temperature annealing their electrical conductivity increases and the effect of Mott conduct ivity is revealed.