The effect of pH on the corrosion rate of 316L Stainless Steel, Nitinol, and Titanium-6%Aluminum-4% Vanadium in Hank’s Solution / Nik Rozlin Nik Masdek ... [et al.]

Nik Masdek, Nik Rozlin and Wahab, Nor’Aini and Ahmad Nawawi, Natasha and Tajudin, Aznul (2021) The effect of pH on the corrosion rate of 316L Stainless Steel, Nitinol, and Titanium-6%Aluminum-4% Vanadium in Hank’s Solution / Nik Rozlin Nik Masdek ... [et al.]. Scientific Research Journal, 18 (1). pp. 1-13. ISSN 2289-649X

Official URL: http://srj.uitm.edu.my/

Abstract

Nowadays, the application of 316L Stainless Steel, Nitinol and Ti-6Al4V alloys as biomaterials have become popular due to their implant performance and durability. In this research work, the effect of pH on the corrosion rate of 316L Stainless Steel, Nitinol and Ti-6Al-4V alloys have been investigated. An electrochemical method was applied to investigate the corrosion behaviour of these biomaterials under simulated biological condition. The potentiodynamic polarisation were performed in a Hank’s solution with a pH value of 7.4 (neutral) and 5.2 (acidic). SEM, XRD, microhardness and surface roughness were also carried out to characterise the corroded surface. The potentiodynamic polarisation results showed that both Ti-6Al-4V and 316L stainless steel had high corrosion rate at pH 5.2 (acidic) as compared to pH 7.4 (neutral). The corrosion rate for Ti-6Al-4V alloys was 22.80×10-3 mmpy at pH 7.4 and increased to 23.65×10-3 mmpy at pH 5.2. Similar behaviour was observed for 316L stainless steel where the corrosion rate increasing from 2.387×10-3 mmpy at pH 7.4 to 5.325×10-3 mmpy at pH 5.2. However, different corrosion behaviour was observed for Nitinol as the corrosion rate decreasing from 17.65×10-3mmpy to16.04×10-3 mmpy at pH 7.4 and pH 5.2, respectively. Hence, the decrease in pH value was found to not cause any significant effect on the corrosion resistance of Nitinol as compared to 316L SS and Ti-6Al-4V alloys.

Metadata

Item Type: Article
Creators:
Creators
Email / ID Num.
Nik Masdek, Nik Rozlin
UNSPECIFIED
Wahab, Nor’Aini
UNSPECIFIED
Ahmad Nawawi, Natasha
UNSPECIFIED
Tajudin, Aznul
UNSPECIFIED
Subjects: T Technology > TA Engineering. Civil engineering > Materials of engineering and construction
Divisions: Universiti Teknologi MARA, Shah Alam > Research Management Centre (RMC)
Journal or Publication Title: Scientific Research Journal
UiTM Journal Collections: UiTM Journal > Scientific Research Journal (SRJ)
ISSN: 2289-649X
Volume: 18
Number: 1
Page Range: pp. 1-13
Keywords: Titanium, Nitinol, stainless steel, corrosion rate, pH value
Date: 2021
URI: https://ir.uitm.edu.my/id/eprint/44951
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