Corrosion Behavior of Plasma Nitrided SS316L Biomaterial
Ratna Kartikasari1, *, Sutrisna1, Ihwanul Aziz2
Identifiers and Pagination:Year: 2017
First Page: 29
Last Page: 37
Publisher Id: TOMSJ-11-29
Article History:Received Date: 23/11/2016
Revision Received Date: 28/04/2017
Acceptance Date: 19/05/2017
Electronic publication date: 31/07/2017
Collection year: 2017
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: (https://creativecommons.org/licenses/by/4.0/legalcode). This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
This research aims to determine corrosion behavior of SS316L biomaterial metals after plasma nitriding process.
The plasma nitriding process on the surface of SS316L was performed at 350oC, 400oC, 450oC, 500oC, 550oC and 1.8 mbar nitrogen gas pressure for 3 hours. The surface Nitrogen concentration level distribution from the surface was examined using Energy Dispersive X-ray Spectroscopy, the phases formed after nitriding process were determined using X-ray Diffraction. The corrosion resistance was investigated using three-electrode cell polarization method.
The results showed that the percentage of nitrogen concentration atoms on the surface of the SS316L after plasma nitriding process was in range of 7.61-21.73%, in which the highest number 21.73% occurred at 500oC. Metal nitride formed on the surface of SS316L for all temperature variations are Fe4N, CrN and β-Cr2N phases were formed after nitriding process. Optimum corrosion resistance (8.21 x 10-4 mm/yr) occurs at 350oC.