Formation, densification, and selected mechanical properties of hot pressed Al(4)SiC(4), Al(4)SiC(4) with 30 vol.% WC, and Al(4)SiC(4) with 30 vol.% TiC

TitleFormation, densification, and selected mechanical properties of hot pressed Al(4)SiC(4), Al(4)SiC(4) with 30 vol.% WC, and Al(4)SiC(4) with 30 vol.% TiC
Publication TypeJournal Article
Year of Publication2011
AuthorsGaballa O, Cook B, Russell A
Journal TitleCeramics International
Volume37
Pages3117-3121
Date Published12
Type of ArticleArticle
ISBN Number0272-8842
Accession NumberWOS:000296397400022
Keywordsalpha-al4sic4, Aluminum silicon carbide, aluminum-silicon-carbide, carbides, carbothermal reduction, ceramics, densification, hot pressing, microstructure, oxidation, powders, resistance, tib2, tungsten carbide
Abstract

Powders of Al(4)C(3) and SiC were combined by high-energy milling to produce Al(4)SiC(4), Al(4)SiC(4) + 30 vol.% TiC, and Al(4)SiC(4) + 30 vol.% WC. Five different temperatures were used to hot press the constituents. XRD, SEM, relative density, and hardness measurements showed that formation of single-phase Al(4)SiC(4) occurred at 1450 degrees C and full densification (99%) was achieved at 1500 degrees C. Both of these temperatures are lower than previously reported. Adding TiC and WC increases hardness, while WC improves densification (99.5%). Published by Elsevier Ltd and Techna Group S.r.l

DOI10.1016/j.ceramint.2011.05.050
Alternate JournalCeram. Int.