Presintered titanium-hydroxyapatite composite fabricated via pim route

Nurul Nadiah Mahmud; Abu Bakar Sulong; Bhupendra Sharma; Kei Ameyama

doi:10.3390/met11020318

Presintered titanium-hydroxyapatite composite fabricated via pim route

Nurul Nadiah Mahmud, Abu Bakar Sulong, Bhupendra Sharma, Kei Ameyama

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

Ti6Al4V-HA composites have been recognized for their potential for biomedical implanta-tion purposes. In the present study, Ti6Al4V-HA composites were fabricated by Powder Injection Molding (PIM) route. Ti6Al4V-HA feedstock at a ratio of 87:13 vol.% was prepared by using a binder system consisting of palm stearin (PS) and polyethylene (PE). The Critical Powder Volume Percentage (CPVP) value for Ti6Al4V-HA was 68 vol.%. Ti6Al4V-HA feedstock was developed at 66 vol.% powder loading. Ti6Al4V-HA feedstock showed pseudoplastic behaviour with a low viscosity and low activation energy of flow and was successfully injected into a tensile bar shape. The debinding process involved a solvent and thermal debinding operation. The debonded parts were sintered at 1300^◦C, and the influence of the presintering stage on the physical and mechanical properties of the sintered parts was investigated. It was proven that the presintering stage was able to restrain the transformation of Ti6Al4V into Ti₃Al (α₂ ) as well as the decomposition of HA. These are key findings ideas for the designing of sintering parameters, where the decomposition of HA becoming the main problem in the sintering of Ti6Al4V-HA composites at a high temperature. The obtained results also showed that the sintered parts had a porous structure, which looked promising for their use in biomedical implantations. purposes.

Original language	English
Article number	318
Pages (from-to)	1-10
Number of pages	10
Journal	Metals
Volume	11
Issue number	2
DOIs	https://doi.org/10.3390/met11020318
Publication status	Published - Feb 2021
Externally published	Yes

All Science Journal Classification (ASJC) codes

Materials Science(all)
Metals and Alloys

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10.3390/met11020318

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title = "Presintered titanium-hydroxyapatite composite fabricated via pim route",

abstract = "Ti6Al4V-HA composites have been recognized for their potential for biomedical implanta-tion purposes. In the present study, Ti6Al4V-HA composites were fabricated by Powder Injection Molding (PIM) route. Ti6Al4V-HA feedstock at a ratio of 87:13 vol.% was prepared by using a binder system consisting of palm stearin (PS) and polyethylene (PE). The Critical Powder Volume Percentage (CPVP) value for Ti6Al4V-HA was 68 vol.%. Ti6Al4V-HA feedstock was developed at 66 vol.% powder loading. Ti6Al4V-HA feedstock showed pseudoplastic behaviour with a low viscosity and low activation energy of flow and was successfully injected into a tensile bar shape. The debinding process involved a solvent and thermal debinding operation. The debonded parts were sintered at 1300◦C, and the influence of the presintering stage on the physical and mechanical properties of the sintered parts was investigated. It was proven that the presintering stage was able to restrain the transformation of Ti6Al4V into Ti3Al (α2 ) as well as the decomposition of HA. These are key findings ideas for the designing of sintering parameters, where the decomposition of HA becoming the main problem in the sintering of Ti6Al4V-HA composites at a high temperature. The obtained results also showed that the sintered parts had a porous structure, which looked promising for their use in biomedical implantations. purposes.",

author = "Mahmud, {Nurul Nadiah} and Sulong, {Abu Bakar} and Bhupendra Sharma and Kei Ameyama",

note = "Funding Information: Acknowledgments: The authors would like to thank the Universiti Kebangsaan Malaysia and The Ministry of Higher Education Malaysia for supporting this work under grant number DCP 2017-001/2. Funding Information: Funding: The Ministry of Higher Education Malaysia funded this research, grant number DCP 2017-001/2. Publisher Copyright: {\textcopyright} 2021 by the authors. Licensee MDPI, Basel, Switzerland.",

year = "2021",

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doi = "10.3390/met11020318",

language = "English",

volume = "11",

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AU - Mahmud, Nurul Nadiah

AU - Sulong, Abu Bakar

AU - Sharma, Bhupendra

AU - Ameyama, Kei

N1 - Funding Information: Acknowledgments: The authors would like to thank the Universiti Kebangsaan Malaysia and The Ministry of Higher Education Malaysia for supporting this work under grant number DCP 2017-001/2. Funding Information: Funding: The Ministry of Higher Education Malaysia funded this research, grant number DCP 2017-001/2. Publisher Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

PY - 2021/2

Y1 - 2021/2

N2 - Ti6Al4V-HA composites have been recognized for their potential for biomedical implanta-tion purposes. In the present study, Ti6Al4V-HA composites were fabricated by Powder Injection Molding (PIM) route. Ti6Al4V-HA feedstock at a ratio of 87:13 vol.% was prepared by using a binder system consisting of palm stearin (PS) and polyethylene (PE). The Critical Powder Volume Percentage (CPVP) value for Ti6Al4V-HA was 68 vol.%. Ti6Al4V-HA feedstock was developed at 66 vol.% powder loading. Ti6Al4V-HA feedstock showed pseudoplastic behaviour with a low viscosity and low activation energy of flow and was successfully injected into a tensile bar shape. The debinding process involved a solvent and thermal debinding operation. The debonded parts were sintered at 1300◦C, and the influence of the presintering stage on the physical and mechanical properties of the sintered parts was investigated. It was proven that the presintering stage was able to restrain the transformation of Ti6Al4V into Ti3Al (α2 ) as well as the decomposition of HA. These are key findings ideas for the designing of sintering parameters, where the decomposition of HA becoming the main problem in the sintering of Ti6Al4V-HA composites at a high temperature. The obtained results also showed that the sintered parts had a porous structure, which looked promising for their use in biomedical implantations. purposes.

AB - Ti6Al4V-HA composites have been recognized for their potential for biomedical implanta-tion purposes. In the present study, Ti6Al4V-HA composites were fabricated by Powder Injection Molding (PIM) route. Ti6Al4V-HA feedstock at a ratio of 87:13 vol.% was prepared by using a binder system consisting of palm stearin (PS) and polyethylene (PE). The Critical Powder Volume Percentage (CPVP) value for Ti6Al4V-HA was 68 vol.%. Ti6Al4V-HA feedstock was developed at 66 vol.% powder loading. Ti6Al4V-HA feedstock showed pseudoplastic behaviour with a low viscosity and low activation energy of flow and was successfully injected into a tensile bar shape. The debinding process involved a solvent and thermal debinding operation. The debonded parts were sintered at 1300◦C, and the influence of the presintering stage on the physical and mechanical properties of the sintered parts was investigated. It was proven that the presintering stage was able to restrain the transformation of Ti6Al4V into Ti3Al (α2 ) as well as the decomposition of HA. These are key findings ideas for the designing of sintering parameters, where the decomposition of HA becoming the main problem in the sintering of Ti6Al4V-HA composites at a high temperature. The obtained results also showed that the sintered parts had a porous structure, which looked promising for their use in biomedical implantations. purposes.

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ER -

Presintered titanium-hydroxyapatite composite fabricated via pim route

Abstract

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