Enhancement of as-sputtered silver-tantalum oxide thin film coating on biomaterial stainless steel by surface thermal treatment

Alias, R. and Mahmoodian, R. and Abd Shukor, M.H. and Yew, B.S and Muhamad, M. (2018) Enhancement of as-sputtered silver-tantalum oxide thin film coating on biomaterial stainless steel by surface thermal treatment. In: International Conference on Advanced Nanotechnology in Engineering and Medical Science, 20-21 Nov 2017, Langkawi, Malaysia.

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Abstract

Stainless steel 316L (SS316L) is extensively used as surgical/clinical tools due to its low carbon content and excellent mechanical characteristic. The fabrication of metal ceramic based on this metallic biomaterial favor its bio functionality properties. However, instability phase of amorphous thin film lead to degradation, corrosion and oxidation. Thus, thin film coating requires elevated adhesion strength and higher surface hardness to meet clinical tools criteria. In this study, the SS316L was deposited with micron thickness of Ag-TaO thin film by using magnetron sputtering. The microstructure, elemental analysis and phase identification of Ag-TaO thin film were characterized by using FESEM, EDX and XRD, respectively; whereas the micro scratch test and micro hardness test were performed by using Micro Scratch Testing System and Vickers Micro Hardness Tester, respectively. It was found that the coating thin film's adhesion and hardness strength were improved from 672 to 2749 mN and 142 to 158 Hv respectively. It was found that the as-deposited surface were treated at 500 degrees C of temperatures with 2 degrees C/min ramping rate enhance 4.1 times of the adhesion strength value. Furthermore, FESEM characterization revealed coarsening structure of the thin film coating which can provide high durability service.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: nanoparticles, adhesion
Subjects: T Technology > T Technology (General)
T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Innovative Design & Technology
Depositing User: Muhammad Akmal Azhar
Date Deposited: 22 Nov 2020 02:27
Last Modified: 22 Nov 2020 02:27
URI: http://eprints.unisza.edu.my/id/eprint/1708

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