Analysis of debinding behaviour and optimisation of binder composition for CuSn10 alloy via material extrusion printing

Material extrusion printing technology offers a reliable approach to low-cost additive manufacturing of metal materials. In this study, the debinding behaviour and binder composition of CuSn10 parts by material extrusion printing were investigated. The results showed that the binders were completely removed after the green parts were subjected to solvent debinding for 24 h and thermal debinding for 3 h. As the paraffin content rose, the feedstocks exhibited a reduction in viscosity accompanied by enhanced fluidity. The samples with 65 wt.% paraffin had the highest density, hardness and elongation of 7.677 g/cm 3 , 51.4 HB and 45.8%. The tensile strength reached the maximum value of 263.6 MPa with 70 wt.% paraffin.