Protective Nitrided Layers on Ferrite-Austenite Chromium Steel

Authors

  • Jaroslaw BIELAWSKI∗, Jolanta BARANOWSKA, Kazimierz SZCZECIŃSKI Institute of Materials Science and Engineering, Szczecin University of Technology

Keywords:

expanded austenite, gas nitriding, duplex steel.

Abstract

High chromium ferritic-austenitic steel is widely applied as a constructional material due to its good corrosion resistance. The possibility to obtain nitrided layers on this steel could widen these applications thanks to producing hard and wear resistance protective coatings. However, this process is not well known and investigated. The paper presents results of investigations on the nitrided layer growth on ferritic-austenitic steel during gas nitriding. Particular attention is paid to importance of technological parameters such as temperature and activation treatment for layer formation. Process was conducted in ammonia atmosphere with 100 % of ammonia in temperature range 350 °C – 550 °C.

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Published

2005-09-13

Issue

Vol. 11 No. 3 (2005)

Section

Articles

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