Production of al-si alloy feedstocks using the solvent hot mixing method

2018 5th Global Conference on Polymer and Composite Materials

材料科学;化学

Ni, J.Q.^1 ; Han, K.Q.^1 ; Yu, M.H.^1

State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai

201620, China^1

关键词: Al-Si alloy;    Alloy powder;    Carnauba wax;    Ceramic component;    Mixing method;    Mixing process;    Net shape processing;    Powder injection molding;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/369/1/012001/pdf
DOI  :  10.1088/1757-899X/369/1/012001

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Powder injection molding is a promising low-cost technique for net shape processing of metal and ceramic components. This study aimed to investigate a new method for preparing aluminium (Al) - silicon (Si) alloy feedstock using the solvent hot mixing process. For this purpose, micron-sized Al-Si (20 wt. %) alloy powder was mixed with a binder consisting of 55 wt. % carnauba wax, 45 wt. % high-density polyethylene, and 3 wt. % stearic acid in a hot xylene bath. The scanning electron microscopy technique, thermogravimetric analysis, density measurement and torque measurements were used to verify the homogeneity of the feedstock. Moreover, the feedstock was chosen to perform the molding, debinding cycle and sintering. An Al-Si (20 wt. %) alloy part was successfully produced using this new method.