A Comparative Tribocorrosion Study of Additive Manufactured and Wrought 316L Stainless Steel in Simulated Body Fluids

Author(s):  
Johan Stendal ◽  
Omar Fergani ◽  
Hitomi Yamaguchi ◽  
Nuria Espallargas
2014 ◽  
Vol 548-549 ◽  
pp. 310-315
Author(s):  
W.M.F.W. Mohamad ◽  
M.Z. Selamat ◽  
B. Bundjali ◽  
M. Musa

This present paper is aims to study the influence of cold rolling process on the microstructure and corrosion behaviors of 316L stainless steel using potentiodynamics polarization testing techniques. The steel with initial thickness of 2.0 mm was unidirectional cold rolled to 10%, 30% and 50% reduction in thickness. The corrosion behaviors of the cold rolled steels were evaluated in phosphate buffered saline (PBS) as their simulated body fluids environment. The pH and temperature of the solution was maintained at 7.31 and 37°C and took approximately 5 hours for each individual test. The microstructure observations of the steels were studied using optical microscope and scanning electron microscopy (SEM). The results showed that the cold rolling process has modified the microstructure of 316L stainless steel by producing extensive surface defects. The microstructure modifications of the cold-rolled steel caused to enhance the corrosion resistance by lowering its corrosion rate to 23% and reduce the pitting resistance by lowering its breakdown potential to 61%. The pit corrosion was extensively appeared after reaching the breakdown potential.


2018 ◽  
Vol 92 ◽  
pp. 11-19 ◽  
Author(s):  
Weichen Xu ◽  
Fei Yu ◽  
Lihui Yang ◽  
Binbin Zhang ◽  
Baorong Hou ◽  
...  

2011 ◽  
Vol 53 (6) ◽  
pp. 2222-2227 ◽  
Author(s):  
Norio Maruyama ◽  
Daisuke Mori ◽  
Sachiko Hiromoto ◽  
Kenji Kanazawa ◽  
Morihiko Nakamura

CORROSION ◽  
10.5006/2720 ◽  
2018 ◽  
Vol 74 (6) ◽  
pp. 683-693 ◽  
Author(s):  
C. Garcia-Cabezon ◽  
F. Martin-Pedrosa ◽  
Y. Blanco-Val ◽  
M.L. Rodriguez-Mendez

Nickel can cause severe allergic reactions. Therefore, efforts are made to reduce the content of nickel in austenitic stainless steels (SS). Powder metallurgy (PM) techniques can produce this steel in a highly affordable way. A novel low-nickel high-nitrogen austenitic powder metallurgy PM stainless steel is investigated in terms of corrosion behavior. Nitrogen, because of its gammagenic effect, is the applied sintering atmosphere. Two sintering processes are applied by controlling the sinter-cooling rate (furnace- and water-cooling). This material shows an austenitic microstructure free of precipitates only after the water-cooling process. The electrochemical behavior in two simulated body fluids—phosphate buffered saline (PBS) solution and Ringer solution—are studied. Corrosion behavior is evaluated by means of anodic polarization measurements and cyclic polarization curves. In addition, Electrochemical Impedance Spectroscopy is used to evaluate the corrosion resistance of this steel in PBS at open circuit potential and at 100 mV above corrosion potential. The water-cooling process promotes better corrosion behavior in simulated body fluids for high nitrogen and low nickel than a conventional (high nickel) austenitic PM SS 316LN type.


Sign in / Sign up

Export Citation Format

Share Document