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Effect of binder composition on debinding and sintering processes of injection molded Fe–8Ni mixed powders

Published online by Cambridge University Press:  31 January 2011

Junjiro Takekawa
Affiliation:
Department of Electron Materials, Faculty of Science & Technology, Ishinomaki Senshu University, 1 Shinmito Minamisakai, Ishinomaki 986–80, Japan
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Abstract

The debinding process of injection-molded compacts of Fe–8Ni mixed powders, containing binders of different ratios of polymers to wax, was investigated. The effect of binder compositions and debinding conditions on the sinterability of the compacts were also studied. Distortions produced in the debinding processes of the compacts were minimized for the case where a ratio of polymer to the total binder contents was 0.35. In the case of the compacts debound in air, sintered densities increased by increasing the debinding temperature up to 350 °C, then decreased sharply for higher debinding temperatures. In the compacts debound in N2, sintered densities were almost independent of the debinding temperature. The sinterability of the compacts debound in N2 was inferior to that debound in air.

Type
Articles
Copyright
Copyright © Materials Research Society 1996

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