Effects of process parameters on nonaqueous gelcasting for copper powder  

作　　者：Karima Bekouche Zhao-li Wang Cheng-Chang Jia Bo-wen Liu Yi Tang 

机构地区：[1]Institute of Advanced Materials and Technology, University of Science and Technology Beijing

出　　处：《International Journal of Minerals,Metallurgy and Materials》2016年第5期542-547,共6页矿物冶金与材料学报（英文版）

基　　金：financially supported by the National Science Foundation of China (Grant No. 51274041)

摘　　要：An approach to fabricate sintered copper with high green strength and high sintered density using nonaqueous gelcasting technol- ogy is 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℃.An approach to fabricate sintered copper with high green strength and high sintered density using nonaqueous gelcasting technol- ogy is 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℃.

关 键 词：copper powder GELCASTING MONOMER process parameters flexural strength DENSITY 

分 类 号：TF12[冶金工程—粉末冶金]