Journal
MATERIALS
Volume 14, Issue 22, Pages -Publisher
MDPI
DOI: 10.3390/ma14226790
Keywords
plasma immersion ion implantation of nitrogen; austenitic stainless steel; corrosion resistance; potentiodynamic polarization; electrochemical impedance spectroscopy
Categories
Funding
- Scientific Grant Agency of Ministry of Education, Science and Sport of Slovak Republic
- Slovak Academy of Sciences grant KEGA [013ZU4/2019]
- Slovak Academy of Sciences grant VEGA [1/0134/20]
- Project to support young researchers at UNIZA [12715]
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The PIII nitriding treatment can significantly improve the corrosion resistance of AISI 316L stainless steel surfaces, as consistently confirmed by three independent corrosion tests.
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 & PLUSMN; 0.5 & DEG;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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