Development of porous TI-6AL-4V mix with palm stearin binder by metal injection moulding technique / Mohamad Ikhwan Jamaludin

Metal Injection Moulding (MIM) is a promising approach to produce a near net-shape product of intricate geometry with cost-effective production. To date, numerous studies have been done on implementing MIM to manufacture products for biomedical applications by employing Titanium and its alloy as a m...

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Main Author:	Jamaludin, Mohamad Ikhwan
Format:	Thesis
Language:	English
Published:	2015
Subjects:	Control engineering systems. Automatic machinery (General)
Online Access:	http://ir.uitm.edu.my/id/eprint/15677/ http://ir.uitm.edu.my/id/eprint/15677/1/TM_MOHAMAD%20IKHWAN%20JAMALUDIN%20EM%2015_5.PDF

id	uitm-15677
recordtype	eprints
spelling	uitm-156772017-01-15T04:51:41Z http://ir.uitm.edu.my/id/eprint/15677/ Development of porous TI-6AL-4V mix with palm stearin binder by metal injection moulding technique / Mohamad Ikhwan Jamaludin Jamaludin, Mohamad Ikhwan Control engineering systems. Automatic machinery (General) Metal Injection Moulding (MIM) is a promising approach to produce a near net-shape product of intricate geometry with cost-effective production. To date, numerous studies have been done on implementing MIM to manufacture products for biomedical applications by employing Titanium and its alloy as a main subject. Titanium and its alloys are renowned materials with their biocompatibility, good mechanical properties and high corrosion resistance. This study was aimed to fabricate porous Ti-6A1-4V structure through MIM technique using palm stearin (PS) binder system. Titanium alloy powder (Ti-6A1-4V) was used to mix with sodium chloride (NaCl) as a space holder and binder components that consists of palm stearin (PS) as a primary binder and polyethylene (PE) as a backbone binder. Four different powder loadings were prepared in this study; 63, 64, 65 and 66 vol.% based on critical powder volume percentage (CPVP) experiment. The homogeneity and flowability of the feedstock were evaluated via torque rheometry data, scanning electron microscopy (SEM) observation and rheological characterization. Then, all feedstocks were injected in a cylindrical bar and tensile bar mould except 66 vol.% feedstock due to unstable rheological behaviour. All moulded specimens were then immersed in heptane and distilled water to remove PS and NaCl respectively. Thermal debinding process took place to remove PE in a high vacuum furnace before it was immediately sintered in the same atmosphere. Temperature of thermal debinding and sintering was set to 510°C and 1200°C where heating rate of thermal debinding and sintering was set to 0.5°C/min and 10°C/min respectively with 1 hour of soaking time. All tensile bar specimens were successfully sintered. However, sintering of cylindrical bar mould specimens was unsuccessful due to inappropriate sample geometry and inhomogeneity of moulded specimens. The characterization of physical properties,mechanical properties and microstructure of the as-sintered parts was performed The average porosity percentage for 63, 64 and 65 vol.% was 43.18, 37.02 and 35.15% and most of the pores were interconnected each other. As expected, high powder loading specimens (65 vol.%) has higher viscosity, strength, density and hardness compared to low powder loading specimens (64 vol.% and 63 vol.%). The elastic modulus of compressive strength and tensile strength for 65 vol.% specimens was 3.362 ± 2.62 GPa and 9.35 ± 2.62 GPa respectively. The (a+P) phase was observed under optical microscope for all sintered specimens has verified that the as-sintered specimens have similar phase with Ti-6A1-4V phase. Overall, porous Ti-6A1-4V structure was successfully fabricated via MIM technique using PS as the binder system and NaCl as the space holder. 2015 Thesis NonPeerReviewed text en http://ir.uitm.edu.my/id/eprint/15677/1/TM_MOHAMAD%20IKHWAN%20JAMALUDIN%20EM%2015_5.PDF Jamaludin, Mohamad Ikhwan (2015) Development of porous TI-6AL-4V mix with palm stearin binder by metal injection moulding technique / Mohamad Ikhwan Jamaludin. Masters thesis, Universiti Teknologi MARA.
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Teknologi MARA
building	UiTM Institutional Repository
collection	Online Access
language	English
topic	Control engineering systems. Automatic machinery (General)
spellingShingle	Control engineering systems. Automatic machinery (General) Jamaludin, Mohamad Ikhwan Development of porous TI-6AL-4V mix with palm stearin binder by metal injection moulding technique / Mohamad Ikhwan Jamaludin
description	Metal Injection Moulding (MIM) is a promising approach to produce a near net-shape product of intricate geometry with cost-effective production. To date, numerous studies have been done on implementing MIM to manufacture products for biomedical applications by employing Titanium and its alloy as a main subject. Titanium and its alloys are renowned materials with their biocompatibility, good mechanical properties and high corrosion resistance. This study was aimed to fabricate porous Ti-6A1-4V structure through MIM technique using palm stearin (PS) binder system. Titanium alloy powder (Ti-6A1-4V) was used to mix with sodium chloride (NaCl) as a space holder and binder components that consists of palm stearin (PS) as a primary binder and polyethylene (PE) as a backbone binder. Four different powder loadings were prepared in this study; 63, 64, 65 and 66 vol.% based on critical powder volume percentage (CPVP) experiment. The homogeneity and flowability of the feedstock were evaluated via torque rheometry data, scanning electron microscopy (SEM) observation and rheological characterization. Then, all feedstocks were injected in a cylindrical bar and tensile bar mould except 66 vol.% feedstock due to unstable rheological behaviour. All moulded specimens were then immersed in heptane and distilled water to remove PS and NaCl respectively. Thermal debinding process took place to remove PE in a high vacuum furnace before it was immediately sintered in the same atmosphere. Temperature of thermal debinding and sintering was set to 510°C and 1200°C where heating rate of thermal debinding and sintering was set to 0.5°C/min and 10°C/min respectively with 1 hour of soaking time. All tensile bar specimens were successfully sintered. However, sintering of cylindrical bar mould specimens was unsuccessful due to inappropriate sample geometry and inhomogeneity of moulded specimens. The characterization of physical properties,mechanical properties and microstructure of the as-sintered parts was performed The average porosity percentage for 63, 64 and 65 vol.% was 43.18, 37.02 and 35.15% and most of the pores were interconnected each other. As expected, high powder loading specimens (65 vol.%) has higher viscosity, strength, density and hardness compared to low powder loading specimens (64 vol.% and 63 vol.%). The elastic modulus of compressive strength and tensile strength for 65 vol.% specimens was 3.362 ± 2.62 GPa and 9.35 ± 2.62 GPa respectively. The (a+P) phase was observed under optical microscope for all sintered specimens has verified that the as-sintered specimens have similar phase with Ti-6A1-4V phase. Overall, porous Ti-6A1-4V structure was successfully fabricated via MIM technique using PS as the binder system and NaCl as the space holder.
format	Thesis
author	Jamaludin, Mohamad Ikhwan
author_facet	Jamaludin, Mohamad Ikhwan
author_sort	Jamaludin, Mohamad Ikhwan
title	Development of porous TI-6AL-4V mix with palm stearin binder by metal injection moulding technique / Mohamad Ikhwan Jamaludin
title_short	Development of porous TI-6AL-4V mix with palm stearin binder by metal injection moulding technique / Mohamad Ikhwan Jamaludin
title_full	Development of porous TI-6AL-4V mix with palm stearin binder by metal injection moulding technique / Mohamad Ikhwan Jamaludin
title_fullStr	Development of porous TI-6AL-4V mix with palm stearin binder by metal injection moulding technique / Mohamad Ikhwan Jamaludin
title_full_unstemmed	Development of porous TI-6AL-4V mix with palm stearin binder by metal injection moulding technique / Mohamad Ikhwan Jamaludin
title_sort	development of porous ti-6al-4v mix with palm stearin binder by metal injection moulding technique / mohamad ikhwan jamaludin
publishDate	2015
url	http://ir.uitm.edu.my/id/eprint/15677/ http://ir.uitm.edu.my/id/eprint/15677/1/TM_MOHAMAD%20IKHWAN%20JAMALUDIN%20EM%2015_5.PDF
first_indexed	2023-09-18T22:54:24Z
last_indexed	2023-09-18T22:54:24Z
_version_	1777417756633726976

Development of porous TI-6AL-4V mix with palm stearin binder by metal injection moulding technique / Mohamad Ikhwan Jamaludin

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