화학공학소재연구정보센터
Powder Technology, Vol.377, 70-79, 2021
Fabrication of titanium components by low-pressure powder injection moulding using hydride-dehydride titanium powder
The injection moulding of metal powder is one of the newest processes for producing titanium components. In this research, challenges of fabrication titanium component by lowpressure powder injection moulding (LPIM) were studied. A hydride-dehydride titanium powder was kneaded with paraffin wax based binder system in 53 vol% powder loading. Powder-binder was injection moulded using low pressure injection moulding machine to prepare the green part. This process was followed by debinding and sintering. The injection results showed that feedstock with high powder loading was not appropriate for LPIM. The suitable parameters of solvent debinding were obtained from soaking the samples in n-hexane at 60 degrees C temperature. The open channels were observed in solvent debound components which can help remove the binder in subsequent stages. The hardness and density of the sintered part were 490 HV and 4.11 g/cm(3), respectively. Coarse alpha plates and alpha/beta colonies were observed in the microstructure. (C) 2020 Elsevier B.V. All rights reserved.