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The Influence of Gas Mixture in the Glow-Discharge Nitriding Process of Austenitic Stainless Steel on Characteristic of Nitrided Cases
Abstrakt
Austenitic stainless steels characterize with excellent corrosion resistance, although low mechanical properties. In many cases that limits their exploitation in industrial applications. Moreover, austenitic stainless steel is susceptible to local corrosion in the presence of halide ions. In present works, it was emphasized that the nitriding of austenitic stainless steels gives some potential abilities to obtain beneficial effect of termochemical treatment on their mechanical properties and corrosion resistance. The nitriding process below the temperature of 450OC allows to achieve above mentioned effects. The low temperature of glow-discharge nitriding process causes the sufficient decrease of chromium mobility. It allows to obtain uniform microstructure which consists of supersaturated nitrogen austenite. The present works prove, that phase has some beneficial effect on mechanical properties and corrosion resistance of these steels. This paper presents investigations of nitrided cases after the glow-discharge nitriding process. The nitrided cases were obtained by using a different chemical composition of gas mixture at the temperature of 450OC. The glow-discharge nitriding process was carried out on austenitic stainless steel, grade of steel X5CrNi18-10. The chemical composition and phase identification of the nitrided cases were examined by using the glow-discharge optical emission spectrometry (GD-OES) and X-ray diffractometry (XRD)
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- Kategoria:
- Publikacja w czasopiśmie
- Typ:
- artykuły w czasopismach recenzowanych i innych wydawnictwach ciągłych
- Opublikowano w:
-
Key Engineering Materials
nr 490,
strony 282 - 287,
ISSN: 1662-9795 - Język:
- angielski
- Rok wydania:
- 2012
- Opis bibliograficzny:
- Sitko A., Szkodo M., Gazda M.: The Influence of Gas Mixture in the Glow-Discharge Nitriding Process of Austenitic Stainless Steel on Characteristic of Nitrided Cases// Key Engineering Materials. -Vol. 490., (2012), s.282-287
- Weryfikacja:
- Politechnika Gdańska
wyświetlono 103 razy