Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/231704

Title

Microstructure, corrosion and tribological behaviour of plasma immersion ion-implanted austenitic stainless steel

Author(s)

Samandi, M.;  Shedden, B. A.;  Smith, D. I.;  Collins, G. A.;  Hutchings, R.;  Tendys, J.

Abstract

The surface modification of AISI 316 stainless steel by plasma immersion ion implantation (PI3) has been investigated over a range of treatment temperatures. Below 250 degrees Celsius the results are similar to those obtained by conventional ion beam implantation of nitrogen, but the depth of nitrogen penetration increases dramatically with temperature. Up to 450 degrees Celsius a nitrogen-expanded austenite phase is formed which is shown to have improved corrosion performance over the untreated material. At 520 degrees Celsius chromium nitride is precipated and the expanded austenite transforms to martensite, leading to a reduction in corrosion resistance. Pin-on-disc testing indicates improved wear resistance at all temperatures, with reduction in the wear volume by factors of several hundred at high loads. This can be attributed to the formation of an oxide layer which prevents the initiation of severe metallic wear.

Publication type

Journal article

Source

Surface and Coatings Technology, Vol. 59, no. 1-3 (Oct 1993), pp. 261-266

Publication year

1993

FOR Code(s)

0204 Condensed Matter Physics;  0306 Physical Chemistry (Incl. Structural);  0912 Materials Engineering

Keyword(s)

Austenitic transformations;  Chromium compounds;  Corrosion resistance;  Ion implantation;  Loads;  Martensitic transformations;  Metallographic microstructure;  Oxides;  Plasma applications;  Plasma immersion ion implantation;  Stainless steel AISI 316;  Surface treatment;  Tribology;  Wear resistance

Publisher

Elsevier

ISSN

0257-8972

Publisher URL

http://dx.doi.org/10.1016/0257-8972(93)90094-5

Copyright

Copyright © 1993 Elsevier B.V. All rights reserved.

Peer reviewed