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Sains Malaysiana 52(5)(2023):
http://doi.org/10.17576/jsm-2023-5205-17
Powder Injection Moulded Ti6Al4V-HA
Composite for Implants
(Pengacuan Suntikan Serbuk Komposit Ti6Al4V-HA untuk Implan)
NURUL NADIAH MAHMUD1,4,*,
ABU BAKAR SULONG2 & KEI AMEYAMA3
1Research
Organization of Science and Technology, Ritsumeikan University, 1-1-1 Noji Higashi, Kusatsu City, Shiga, 525-8577, Japan
2Department of
Mechanical and Manufacturing Engineering, Faculty of Engineering and Built
Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor Darul Ehsan, Malaysia
3Department
of Mechanical Engineering, Ritsumeikan University,
1-1-1 Noji Higashi, Kusatsu City, Shiga, 525-8577, Japan
4Universiti Kuala Lumpur
Malaysia France Institute, 43650 Bandar Baru Bangi, Selangor Darul Ehsan,
Malaysia
Received: 4 November 2022/Accepted: 11 April 2023
Abstract
Powder injection moulding (PIM) is widely used to produce complex shapes of
Titanium and its alloys. Ti6Al4V-HA feedstocks at 63,
64 and 66 vol.% were produced by combining a Ti6Al4V-HA powder mixture (90:10
wt.%) with a binder system containing palm stearin (PS) and low-density
polyethylene (LDPE). Binder system consisted with 60 wt.% of PS and 40 wt.% of
LDPE. All powder loading materials were successfully injection moulded into the shape of a tension bar. Following that,
all powder loadings were successfully debound in
solvent and thermal methods. Based on SEM observation that 66 vol.% powder
loading demonstrated homogenized distribution of powder and binder. Hence, 66
vol.% powder loading was selected for further process sintering at 1300 ºC, and
its bending strength was evaluated. Sintered Ti6Al4V-HA with porous structure
has Young’s modulus of 11 GPa, within the Young modulus
of bone (10 to 30 GPa). The results of this study
indicate that sintered Ti6Al4V-HA has potential as an implant material.
Keywords: Composite;
hydroxyapatite; powder injection moulding; Ti6Al4V
Abstrak
Pengacuan suntikan serbuk (PIM) digunakan secara meluas untuk menghasilkan bentuk kompleks daripada Titanium dan aloinya. Bahan suapan Ti6Al4V-HA pada 63, 64 dan 66 vol.% dihasilkan dengan menggabungkan campuran serbuk Ti6Al4V-HA (90:10
wt.%) dengan sistem pengikat yang mengandungi stearin sawit (PS) dan polietilena berketumpatan rendah (LDPE). Sistem pengikat terdiri daripada 60 wt.% daripada PS dan 40 wt.% daripada LDPE. Semua pemuatan serbuk berjaya disuntik ke dalam bentuk bar regangan. Selepas itu, semua pemuatan serbuk berjaya dinyahikat dalam kaedah pelarut dan haba. Berdasarkan pemerhatian SEM, 66
vol.% pemuatan serbuk menunjukkan taburan serbuk dan pengikat yang homogen. Oleh itu, pemuatan serbuk 66 vol.% telah dipilih untuk proses selanjutnya pensinteran pada 1300 ºC dan kekuatan lenturnya dinilai. Jasad sinter mempunyai modulus Young yang diperoleh adalah 11 GPa, berada dalam modulus Young tulang (10 sehingga 30 GPa). Hasil kajian ini menunjukkan jasad sinter Ti6Al4V-HA mempunyai potensi untuk digunakan sebagai bahan implan.
Kata kunci: Hidrosiapatit; komposit; pengacuan suntikan serbuk; Ti6Al4V
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*Corresponding author; email: nn90.kawai@gmail.com
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