Designing of a powder compressing device with vibration and investigation of compressibility of MgO powders with this device

✍ Scribed by Recep Calin; Ramazan Citak

• Publisher: Elsevier Science
• Year: 2007
• Weight: 288 KB
• Volume: 28
• Category: Article
• ISSN: 0261-3069
• DOI: 10.1016/j.matdes.2006.10.012

✦ Synopsis

One of metal matrix composite (MMC) production methods is infiltration of liquid metal into preformed reinforcement. In this method, MMCs are produced by infiltration of liquid metal into preformed reinforcement using one of pressure, vacuum or pressureless (free) infiltration methods. For infiltration purposes, reinforcement materials in different figuration are preformed in desired shape and reinforcement volume ratio. In this study a vibration apparatus has been designed to compress the particulate reinforcement in a tube so that pressure or vacuum infiltration can be carried out. The compressibility of MgO powders with different sizes with this apparatus has also been investigated. It has been found that with this apparatus, it is possible to compress desired number of specimens uniformly at the same time and at the same ratio. It has also been determined that MgO powders can be compressed in different ratio due to particle sizes with this device. Compressing time of 3 min is enough to reach maximum compression ratio in MgO powders.