- A new Aqueous Injection Molding Method of Fabricating W-Cu Pseudo-alloy Part
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Jeong-Keun Lee
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J Korean Powder Metall Inst. 2006;13(1):57-61.
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DOI: https://doi.org/10.4150/KPMI.2006.13.1.057
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 Abstract
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- The present work illustrates the use of water-soluble cupric salts as ingredients of binder for injection molding of W-10 wt% Cu. Parts produced are dense, homogeneous and have good surface finish, compared to those produced using conventional binder system. This new binder system provides also process-simplification benefit. CuCl_2;and;Cu(NO_3)_2 with the purity of 98% was selected for this study. Rapid sintering process involving thermal decomposing was successful in densification for 1h. Final density that is about 93% of theoretical value could be obtained, and are distinguishable from conventionally processed W-Cu composites.
- On Apparent Density and Flow Rate Measurement at Elevated Temperature for Powder Mixes Intended for Warm Compacting
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Jeong-Keun Lee, Soon-Wook Kim
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J Korean Powder Metall Inst. 2006;13(1):52-56.
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DOI: https://doi.org/10.4150/KPMI.2006.13.1.052
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Abstract
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- The aim of this work was to establish an optimal condition for determination of apparent density and flow rate for warm compacting powder. For this purpose it was evaluated uncertainty on them according to ISO Guide to the Expression of Uncertainty in Measurement. This evaluation example would be useful even in powder fluidity measurement at room temperature.
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