Fabrication of Titanium-Matrix Composite with 40 wt% Hydroxyapatite by Powder Injection Molding

Arifin, Amir and Gunawan, Gunawan and Barlin, Barlin (2021) Fabrication of Titanium-Matrix Composite with 40 wt% Hydroxyapatite by Powder Injection Molding. Lecture Notes in Mechanical Engineering. ISSN 2195-4364

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In this work, the performance of composites feedstock HA/Ti for metal injection molding is investigated by rheological characterization with powder loading 65%. Titanium and Hydroxyapatite (HA) powder are mixed with a composite binder, which consists of Palm Stearin (PS) and Polyethylene (PE). The rheology properties are investigated by Shimadzu CFT-500D rheometer. Thermal debinding is utilized for removing the binder system under argon gas. The sintering process is performed under argon conditions at temperature 1200 °C for 2 h. The feedstock 60 wt%Ti and 40 wt%HA show pseudopalstic behaviour which is indicating suitable for MIM application. On the sintered part, Ca:P ratio of HA has changed based on the standard value of HA(1.67) as an indication decomposition of HA. Cracks have been observed on part of composite HA/Ti by SEM due to differences in thermal expansion of the two materials and not a good diffusion between HA and Ti. For further work, modification in the composition of mixture and sintering parameters are required to reach an optimal result.

Item Type: Article
Subjects: T Technology > TS Manufactures > TS200-770 Metal manufactures. Metalworking > TS205.H33413 Metal-work.
Divisions: 03-Faculty of Engineering > 21201-Mechanical Engineering (S1)
Depositing User: Amir Arifin
Date Deposited: 18 Apr 2023 12:56
Last Modified: 18 Apr 2023 12:56
URI: http://repository.unsri.ac.id/id/eprint/97020

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