Study onCorrosion Behaviour of AISI 316L Stainless Steel Treated with Air Cold Plasma

Pitting resistance of air cold plasma-oxidation 316L stainless steel was evaluated by exposing the specimens into a ferric chloride solution. The results indicate that the pitting resistance of plasma-oxidized specimens improved obviously. Potentiodynamic polarization curves were measured to study its corrosion behavior. The corrosion mechanism was also interpreted by electrochemical impedance spectroscopy (EIS) and Auger electron spectroscopy (AES).The results reveal that the oxide layer formed by the plasma treatment is much thicker than that without treatment and is double-deck structure, which leads to the change of EIS characteristic of sample surface.

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Corrosion Resistance of AISI 316L Stainless Steel Biomaterial after Plasma Immersion Ion Implantation of Nitrogen

Materials ◽

10.3390/ma14226790 ◽

2021 ◽

Vol 14 (22) ◽

pp. 6790

Author(s):

Viera Zatkalíková ◽

Juraj Halanda ◽

Dušan Vaňa ◽

Milan Uhríčik ◽

Lenka Markovičová ◽

...

Keyword(s):

Stainless Steel ◽

Corrosion Resistance ◽

Ion Implantation ◽

316L Stainless Steel ◽

Electrochemical Impedance ◽

Austenitic Stainless Steels ◽

Aisi 316L ◽

Corrosion Properties ◽

Aisi 316L Stainless Steel ◽

Plasma Immersion Ion Implantation

Plasma immersion ion implantation (PIII) of nitrogen is low-temperature surface technology which enables the improvement of tribological properties without a deterioration of the corrosion behavior of austenitic stainless steels. In this paper the corrosion properties of PIII-treated AISI 316L stainless steel surfaces are evaluated by electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PP) and exposure immersion tests (all carried out in the 0.9 wt. % NaCl solution at 37 ± 0.5 °C) and compared with a non-treated surface. Results of the three performed independent corrosion tests consistently confirmed a significant increase in the corrosion resistance after two doses of PIII nitriding.

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Mechanical and Electrochemical Characterization of Super-Solidus Sintered Austenitic Stainless Steel (316L)

High Temperature Materials and Processes ◽

10.1515/htmp-2015-0083 ◽

2016 ◽

Vol 35 (7) ◽

pp. 643-651 ◽

Cited By ~ 1

Author(s):

A. Muthuchamy ◽

A. Raja Annamalai ◽

Rishabh Ranka

Keyword(s):

Stainless Steel ◽

316L Stainless Steel ◽

Electrochemical Impedance ◽

Electrochemical Behaviour ◽

Compaction Pressure ◽

Solidus Temperature ◽

Stainless Steel 316L ◽

Aisi 316L Stainless Steel ◽

Strength And Ductility

AbstractThe present study compares the mechanical and electrochemical behaviour of austenitic (AISI 316L) stainless steel compacted at various pressures (200, 400 and 600 MPa) and conventionally sintered at super-solidus temperature of 1,400°C. The electrochemical behaviour was investigated in 0.1 N H2SO4 solution by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The shrinkage decreased and densification has been increased with increasing pressure. The mechanical and electrochemical behaviour with pressure has been correlated with densification response and microstructure (pore type, volume and morphology). Highest densification (~92% theoretical) achieved at 600 MPa (compaction pressure) and 1,400°C (sintering temperature) resulted in excellent combination of tensile strength and ductility (456 ± 40 MPa, 25 ± 1.1%), while showing excellent corrosion resistance (0.1 mmpy or 4.7 mpy).

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Effects of Surface Softening on the Mechanical Properties of an AISI 316L Stainless Steel under Cyclic Loading

Metals ◽

10.3390/met11111788 ◽

2021 ◽

Vol 11 (11) ◽

pp. 1788

Author(s):

Tiehui Fang ◽

Feng Cai

Keyword(s):

Stainless Steel ◽

316L Stainless Steel ◽

Stress Amplitude ◽

Fatigue Behavior ◽

High Stress ◽

Sample Surface ◽

Fatigue Tests ◽

Aisi 316L ◽

Homogeneous Sample ◽

Aisi 316L Stainless Steel

The effects of surface softening on fatigue behavior of AISI 316L stainless steel were investigated. Using cold-rolling and electromagnetic induction heating treatment, a gradient structure was fabricated on AISI 316L stainless steel within which the grain size decreased exponentially from micrometers to nanometers to mimic the surface softening. Stress-controlled fatigue tests were applied to both the gradient and homogeneous structures. Compared with the homogeneous sample, surface softening had no evident effect on fatigue behavior when the stress amplitude was greater than 400 MPa, but significantly deteriorated the fatigue behavior at stress amplitude ≤400 MPa. At high-stress amplitude, fatigue behavior is dominated by crack propagation. When the stress amplitude is lowered, strength reduction and stress concentration caused by surface softening accelerate crack initiation and propagation, resulting in an inferior fatigue behavior.

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Physicochemical and Electrochemical Properties of Aisi 316L Stainless Steel Used for Implants in Human Urinary System

Archives of Metallurgy and Materials ◽

10.2478/amm-2013-0048 ◽

2013 ◽

Vol 58 (2) ◽

pp. 625-630 ◽

Cited By ~ 1

Author(s):

W. Walke ◽

J. Przondziono

Keyword(s):

Stainless Steel ◽

Electrochemical Properties ◽

316L Stainless Steel ◽

Electrochemical Impedance ◽

Electrochemical Characteristics ◽

Urinary System ◽

Aisi 316L ◽

Aisi 316L Stainless Steel ◽

Test Pieces ◽

Modified Surface

The main purpose of this study was to evaluate physicochemical and electrochemical properties of AISI 316L stainless steel with modified surface, used for implants in human urinary system. In order to simulate conditions, which occur in the tissue environment of the urinary system, the test pieces were exposed in a urinary solution at temperature of T=37 ±1ºC, for a period of 30 days. Evaluation of physicochemical properties of biomaterial was made on the basis of surface chemical analysis (XPS). To evaluate the effects which occur on the surface of the examined steel, Electrochemical Impedance Spectroscopy (EIS) method was also employed. Analysis of test results shows favourable influence of the suggested surface treatment of AISI 316L stainless steel. Samples having electrolytically polished and chemically passivated surface featured the best physicochemical and electrochemical characteristics.

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