Effects of process parameters on nonaqueous gelcasting for copper powder |
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| Authors: | Karima Bekouche Zhao-li Wang Cheng-Chang Jia Bo-wen Liu Yi Tang |
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| Affiliation: | Institute of Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China |
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| Abstract: | An approach to fabricate sintered copper with high green strength and high sintered densityusing nonaqueousgelcasting technol-ogyis presented in this study. The effects of various gelcasting processing parameters such as monomer content, monomer/crosslinker ratio, initiator content, dispersant dosage, and temperature on the flexural strength of dried green bodies and the relative density of sintered bodies were studied to obtain better microstructures and properties. The appropriate process parameters obtained for copper gelcasting are as follows: monomer content, 20vol%-30vol% (based on the total volume of reagents); monomer/crosslinker ratio, 10:1 to 20:1; initiator content, 3vol%-4vol% (based on the volume of the monomer); dispersant dosage, 1.5wt%-2.5wt% (based on the mass of the copper powder); and reaction temperature, 65-75°C. |
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| Keywords: | copper powder gelcasting monomer process parameters flexural strength density |
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