Characterization of PTFE Film on 316L Stainless Steel Deposited through Spin Coating and Its Anticorrosion Performance in Multi Acidic Mediums
Polytetrafluoroethylene (PTFE) was coated on 316L stainless steel (SS) substrate through a spin coating technique to enhance its corrosion resistance properties in hydrochloric acid (HCl) and nitric acid (HNO<sub>3</sub>) medium. Scanning electron microscopy (SEM) revealed the morphology...
Main Authors: | , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2020-01-01
|
Series: | Materials |
Subjects: | |
Online Access: | https://www.mdpi.com/1996-1944/13/2/388 |
id |
doaj-a043065d61994b029cff8411e34f0425 |
---|---|
record_format |
Article |
spelling |
doaj-a043065d61994b029cff8411e34f04252020-11-25T01:33:22ZengMDPI AGMaterials1996-19442020-01-0113238810.3390/ma13020388ma13020388Characterization of PTFE Film on 316L Stainless Steel Deposited through Spin Coating and Its Anticorrosion Performance in Multi Acidic MediumsWaseem Akram0Amer Farhan Rafique1Nabeel Maqsood2Afzal Khan3Saeed Badshah4Rafi Ullah Khan5Department of Mechanical Engineering, International Islamic University, Islamabad 44000, PakistanDepartment of Aerospace Engineering, Faculty of Engineering, King Abdulaziz University, Jeddah 21589, Saudi ArabiaDepartment of Production Engineering, Faculty of Mechanical Engineering and Design, Kaunas University of Technology, 51424 Kaunas, LithuaniaDepartment of Mechanical Engineering, University of Engineering & Technology, Peshawar 25000, PakistanDepartment of Mechanical Engineering, International Islamic University, Islamabad 44000, PakistanDepartment of Mechanical Engineering, International Islamic University, Islamabad 44000, PakistanPolytetrafluoroethylene (PTFE) was coated on 316L stainless steel (SS) substrate through a spin coating technique to enhance its corrosion resistance properties in hydrochloric acid (HCl) and nitric acid (HNO<sub>3</sub>) medium. Scanning electron microscopy (SEM) revealed the morphology of the coated and uncoated substrates and showed a uniform and crack-free PTFE coating on 316L SS substrate, while a damaged surface with thick corrosive layers was observed after the electrochemical test on the uncoated sample. However, an increased concentration of HCl and HNO<sub>3</sub> slightly affected the surface morphology by covering the corrosive pits. An atomic force microscope (AFM) showed that the average surface roughness on 316L SS and PTFE coating was 26.3 nm and 24.1 nm, respectively. Energy dispersive X-ray spectroscopy (EDS) was used for the compositional analysis, which confirmed the presence of PTFE coating. The micro Vickers hardness test was used to estimate the hardness of 316L SS and PTFE-coated substrate, while the scratch test was used to study the adhesion properties of PTFE coating on 316L SS. The anticorrosion measurements of 316L SS and PTFE-coated substrates were made in various HCl and HNO<sub>3</sub> solutions by using the electrochemical corrosion test. A comparison of the corrosion performance of PTFE-coated substrate with that of bare 316L SS substrate in HCl medium showed a protection efficiency (PE) of 96.7%, and in the case of HNO<sub>3</sub> medium, the PE was 99.02%, by slightly shifting the corrosion potential of the coated sample towards the anodic direction.https://www.mdpi.com/1996-1944/13/2/388polytetrafluoroethylene316l stainless steelcorrosion performancecoatingmicrostructure morphology |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Waseem Akram Amer Farhan Rafique Nabeel Maqsood Afzal Khan Saeed Badshah Rafi Ullah Khan |
spellingShingle |
Waseem Akram Amer Farhan Rafique Nabeel Maqsood Afzal Khan Saeed Badshah Rafi Ullah Khan Characterization of PTFE Film on 316L Stainless Steel Deposited through Spin Coating and Its Anticorrosion Performance in Multi Acidic Mediums Materials polytetrafluoroethylene 316l stainless steel corrosion performance coating microstructure morphology |
author_facet |
Waseem Akram Amer Farhan Rafique Nabeel Maqsood Afzal Khan Saeed Badshah Rafi Ullah Khan |
author_sort |
Waseem Akram |
title |
Characterization of PTFE Film on 316L Stainless Steel Deposited through Spin Coating and Its Anticorrosion Performance in Multi Acidic Mediums |
title_short |
Characterization of PTFE Film on 316L Stainless Steel Deposited through Spin Coating and Its Anticorrosion Performance in Multi Acidic Mediums |
title_full |
Characterization of PTFE Film on 316L Stainless Steel Deposited through Spin Coating and Its Anticorrosion Performance in Multi Acidic Mediums |
title_fullStr |
Characterization of PTFE Film on 316L Stainless Steel Deposited through Spin Coating and Its Anticorrosion Performance in Multi Acidic Mediums |
title_full_unstemmed |
Characterization of PTFE Film on 316L Stainless Steel Deposited through Spin Coating and Its Anticorrosion Performance in Multi Acidic Mediums |
title_sort |
characterization of ptfe film on 316l stainless steel deposited through spin coating and its anticorrosion performance in multi acidic mediums |
publisher |
MDPI AG |
series |
Materials |
issn |
1996-1944 |
publishDate |
2020-01-01 |
description |
Polytetrafluoroethylene (PTFE) was coated on 316L stainless steel (SS) substrate through a spin coating technique to enhance its corrosion resistance properties in hydrochloric acid (HCl) and nitric acid (HNO<sub>3</sub>) medium. Scanning electron microscopy (SEM) revealed the morphology of the coated and uncoated substrates and showed a uniform and crack-free PTFE coating on 316L SS substrate, while a damaged surface with thick corrosive layers was observed after the electrochemical test on the uncoated sample. However, an increased concentration of HCl and HNO<sub>3</sub> slightly affected the surface morphology by covering the corrosive pits. An atomic force microscope (AFM) showed that the average surface roughness on 316L SS and PTFE coating was 26.3 nm and 24.1 nm, respectively. Energy dispersive X-ray spectroscopy (EDS) was used for the compositional analysis, which confirmed the presence of PTFE coating. The micro Vickers hardness test was used to estimate the hardness of 316L SS and PTFE-coated substrate, while the scratch test was used to study the adhesion properties of PTFE coating on 316L SS. The anticorrosion measurements of 316L SS and PTFE-coated substrates were made in various HCl and HNO<sub>3</sub> solutions by using the electrochemical corrosion test. A comparison of the corrosion performance of PTFE-coated substrate with that of bare 316L SS substrate in HCl medium showed a protection efficiency (PE) of 96.7%, and in the case of HNO<sub>3</sub> medium, the PE was 99.02%, by slightly shifting the corrosion potential of the coated sample towards the anodic direction. |
topic |
polytetrafluoroethylene 316l stainless steel corrosion performance coating microstructure morphology |
url |
https://www.mdpi.com/1996-1944/13/2/388 |
work_keys_str_mv |
AT waseemakram characterizationofptfefilmon316lstainlesssteeldepositedthroughspincoatinganditsanticorrosionperformanceinmultiacidicmediums AT amerfarhanrafique characterizationofptfefilmon316lstainlesssteeldepositedthroughspincoatinganditsanticorrosionperformanceinmultiacidicmediums AT nabeelmaqsood characterizationofptfefilmon316lstainlesssteeldepositedthroughspincoatinganditsanticorrosionperformanceinmultiacidicmediums AT afzalkhan characterizationofptfefilmon316lstainlesssteeldepositedthroughspincoatinganditsanticorrosionperformanceinmultiacidicmediums AT saeedbadshah characterizationofptfefilmon316lstainlesssteeldepositedthroughspincoatinganditsanticorrosionperformanceinmultiacidicmediums AT rafiullahkhan characterizationofptfefilmon316lstainlesssteeldepositedthroughspincoatinganditsanticorrosionperformanceinmultiacidicmediums |
_version_ |
1725077594779418624 |