FABRICATION OF MICRO GEARS BY MICRO-POWDER INJECTION–COMPRESSION MOLDING

Jin Man Jang, Wonsik Lee (), Seong-Ho Son, Se-Hyun Ko and Il-Ho Kim
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Jin Man Jang: Advanced Materials Division, Korea Institute of Industrial Technology, Incheon Metropolitan City 406-840, Korea
Wonsik Lee: Advanced Materials Division, Korea Institute of Industrial Technology, Incheon Metropolitan City 406-840, Korea
Seong-Ho Son: Production Technology Division, Korea Institute of Industrial Technology, Incheon Metropolitan City 406-840, Korea
Se-Hyun Ko: Advanced Materials Division, Korea Institute of Industrial Technology, Incheon Metropolitan City 406-840, Korea
Il-Ho Kim: Advanced Materials Division, Korea Institute of Industrial Technology, Incheon Metropolitan City 406-840, Korea

Surface Review and Letters (SRL), 2010, vol. 17, issue 02, 235-240

Abstract: Micro-spur gears were fabricated by powder injection–compression molding and micro-two-step gears were produced through stacking and sintering of the green parts. Shrinkage of micro-gears by sintering was larger in teeth and with increase of compression pressure, shrinkage was decreased due to increase of density in green parts. Surface roughness of sintered body was reduced to a few hundreds of nanometers by ultrasonic micro-polishing. The joining of green bodies by stacking and sintering was achieved using the pressurized sintering and insert of feedstock powders between both green bodies.

Keywords: Micro-powder injection molding; feedstock; micro-gear; diffusion bonding (search for similar items in EconPapers)
Date: 2010
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DOI: 10.1142/S0218625X10013941

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