Cover Picture: The Role of Oxidation During Compaction on the Expansion and Stability of Al Foams Made Via a PM Route (Adv. Eng. Mater. 6/2006)

✍ Scribed by S. Asavavisithchai; A. R. Kennedy

• Publisher: John Wiley and Sons
• Year: 2006
• Tongue: English
• Weight: 147 KB
• Volume: 8
• Category: Article
• ISSN: 1438-1656
• DOI: 10.1002/adem.200690011

✦ Synopsis

The foam expansion and collapse behaviour for hot compacted Al‐TiH~2~ precursors has been shown to be driven by the oxidation of the Al powder and the premature loss of gas from the TiH~2~ foaming agent during the compaction process. At 550 °C, oxidation is rapid, and gas loss from the hydride is extensive leading to poor expansion.