Austenitic Stainless Steels Corrosion Properties Modified by Silicon Alloying

Content Provider	Directory of Open Access Journals (DOAJ)
Author	Brânduşa GHIBAN Sorin CIUCĂ
Abstract	In the present paper there are presented results concerning comparative corrosion resistance of some austenitic stainless steels, with or without silicon content. The silicon content is varying in the range of 1-5 %, in a matrix of alloyed austenite, containing 20% Cr and 15-18%Ni and with very low carbon contents (lower than 0.03% C). There are investigated different types of corrosion resistance: intergranular corrosion in nitrogen media, stress corrosion resistance in chloride media, and transpassive behaviour in sulphuric media. The tested media contained nitrogen, as it follows: Huey test (65% HNO3, at boiling temperature, 244 hours maintain), and 5N HNO3 +1g/l Cr6+ (144 h, b.t.). The media contained chloride is 45% MgCl2 at boiling temperature, with a period of 1000 hours. The transpassive behaviour is tested in 10% HSO4. The investigations were made by optic and electronic microscope, and the corroded surfaces were examined by scanning electron microscopy.
Related Links	https://www.gup.ugal.ro/ugaljournals/index.php/mms/article/view/3180
ISSN	26684748
e-ISSN	26684756
Journal	The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science
Issue Number	1
Volume Number	30
Language	English
Publisher	Galati University Press
Publisher Date	2007-01-01
Publisher Place	Romania
Access Restriction	Open
Subject Keyword	Mining engineering. Metallurgy Corrosion Resistance Austenitic Stainless Steels
Content Type	Text
Resource Type	Article