US EPA

4186144 

Journal Article 

Electrochemical study of AISI 316L Stainless Steel in different nanoparticle suspensions 

Cantaragiu, AM; Carac, G; Gheorghies, C 

2010 

Yes 

Journal of Optoelectronics and Advanced Materials
ISSN: 1454-4164 

12 

12 

2391-2399 

WOS:000286043000008 

The aim of this paper is to study the corrosion behaviour of AISI 316L Stainless Steel (SS) in various solutions with nanoparticle suspensions by electrochemical testing. It is very important to determine the chemical reactivity of AISI 316L SS in the presence of some aqueous solutions in order to characterize the biocompatibility with the human body. The tested corrosive environments are: demineralised and deionised water at different immersion times, aqueous solution of 0.1 or 0.2 g/l TiO(2) as well as aqueous solution of 0.1 or 0.2 g/l Al(2)O(3). The measurements at room temperature were made in a conventional three-electrodes chemical cell, using a platinum electrode, a calomel and an AISI 316 SS as working electrode. The corrosion process was examined by linear polarization (LP) using a Bio-Logic potentiostate. For the LP measurements the potential ranged between -1.15+1.13 V vs. SCE. The immersion time before each measurement was 60 sec. to assess an equilibrium open potential. From the LP curves, the corrosion potential and parameters such as corrosion current, the polarisation resistance and corrosion rate are determined. Under certain circumstances, the results show that the nanoparticle suspensions act as a protective layer on the AISI 316L SS sample surface. 

Stainless steel; Alumina; Titania; Corrosion rate; Polarization resistance