Effect of sliding wear and electrochemical potential on tribocorrosion behaviour of AISI 316 stainless steel in seawater
| Autor: | Sabri Alkan, Mustafa Sabri Gök |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Computer Networks and Communications Scanning electron microscope AISI 316 Tribocorrosion 020209 energy Energy-dispersive X-ray spectroscopy 02 engineering and technology Cathodic protection Biomaterials 0202 electrical engineering electronic engineering information engineering Galvanic cell Seawater Sliding wear Civil and Structural Engineering Electrochemical potential Fluid Flow and Transfer Processes Mechanical Engineering 020208 electrical & electronic engineering Metallurgy Metals and Alloys Electronic Optical and Magnetic Materials Corrosion lcsh:TA1-2040 Hardware and Architecture lcsh:Engineering (General). Civil engineering (General) Contact area Tribometer |
| Zdroj: | Engineering Science and Technology, an International Journal, Vol 24, Iss 2, Pp 524-532 (2021) ENGINEERING SCIENCE AND TECHNOLOGY-AN INTERNATIONAL JOURNAL-JESTECH |
| ISSN: | 2215-0986 |
| Popis: | Sliding tribocorrosion behaviours of AISI 316 stainless steel were investigated against alumina ball in natural seawater environment (SWE) under 5 N loads. OCP (open circuit potential), potentiostatic (−1 V and 0.3 V) and potentiodynamic measurements were enforced to understand the influence of the sliding wear and electrochemical potential on tribocorrosion behaviours of AISI 316 stainless steel in SWE. Tribocorrosion experiments were conducted with a ball-on-disk type reciprocating tribometer integrated with the three-electrode potentiostat. The wear track surfaces were examined by scanning electron microscope (SEM), energy dispersive spectroscopy (EDS) and optical profilometry. Mechanical effects reduced corrosion potential under both OCP and potentiodynamic scans in tribocorrosion conditions. Ploughing effects on the wear track were evident at the OCP and −1 V potential because of the predominance of mechanical effects. Pits were determined to develop due to the formation of the galvanic couple between worn and unworn surfaces after the tribocorrosion test, which was conducted under 0.3 V potential. The reduction of the contact area because of the pits and the lubricating effect of the oxides on the surface caused the lowest coefficient of friction (COF) in the wear zone at 0.3 V potential. Besides, COF obtained under −1 V cathodic protection potential (0.35) was less than in OCP condition (0.37) since it only occurred by the wear effects. The study also revealed that material loss from the wear track increased from cathodic potential towards anodic potential. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|