Fabrication of micro structure with complicated shape by temperature controlled semi-solid mold isostatic powder compaction

Fujio Tsumori, Syunsuke Ikeuchi

Research output: Contribution to journalArticle

Abstract

New powder compaction process using a Bingham semi-solid/fluid mold was developed to fabricate micro pans. In the present work, a powder material was filled as slurry in a solid wax mold, dried and compressed by conventional pressing methods, such as isostatic pressing or die compaction. It is important to use slurry for filling because dry powder is hard to fill in the micro cavity. It is also essential to control the process temperature to treat micro parts. The wax mold was heated during compaction and became semi-solid state, which could acts as a pressurized medium for isostatic compaction. Since the compacted micro parts were very fragile, the mold's temperature was controlled to higher than its melting point during unloading, to avoid breakage of the compacts. To demonstrate effectiveness of the present process, some micro compacts of alumina are shown as examples.

Original languageEnglish
Pages (from-to)885-888
Number of pages4
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume53
Issue number11
DOIs
Publication statusPublished - Nov 1 2006
Externally publishedYes

Fingerprint

Powders
Compaction
Fabrication
Microstructure
Waxes
Temperature
Aluminum Oxide
Unloading
Melting point
Alumina
Fluids

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Metals and Alloys

Cite this

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