Injection Molding of β-TCP Powder

Abstract

Injection molding of β-TCP powder was studied. Rod like test pieces (φ6×50l) were produced by the injection molding using three powder-binder compound: (I) β-TCP and several organic binders; (II) β-TCP, alumina (3-9wt%) and several organic binders; (III) β-TCP, zirconia (3-9wt%) and several organic binders. After the binder extraction process, the test pieces were heated up to 1000°C-1400°C at a rate of 100°C/h. The relative densities and bending strength of the sintered test pieces (I) (relative density: 99%, bending strength: 130MPa, sintering temperature: 1200°C) in the absence alumina or zirconia were higher than that of the sintered test pieces (II, III) in the presence of alumina or zirconia.