Numéro
J. Phys. IV France
Volume 03, Numéro C9, Décembre 1993
Proceedings of the 3rd International Symposium on High Temperature Corrosion and Protection of Materials
Actes du 3ème Colloque International sur la Corrosion et la Protection des Matériaux à Haute Température
Page(s) C9-971 - C9-978
DOI http://dx.doi.org/10.1051/jp4:19939100
Proceedings of the 3rd International Symposium on High Temperature Corrosion and Protection of Materials
Actes du 3ème Colloque International sur la Corrosion et la Protection des Matériaux à Haute Température

J. Phys. IV France 03 (1993) C9-971-C9-978

DOI: 10.1051/jp4:19939100

Sliding Wear of TiN coated 321 stainless steel in CO2 at 300 and 500°C

F.H. Stott1 and D.R.G. Mitchell2

1  Corrosion and Protection Centre, UMIST, Manchester, U.K.
2  School of Materials Science and Engineering, University of New South Wales, Australia.


Abstract
Advanced carbon dioxide-cooled nuclear reactor environments can be tribologically hostile, with steel components sliding in contact at high temperatures. Although wear-protective oxides can reduce damage in the steady-state conditions, severe wear can occur in the early stages, particularly at temperatures of 300 to 500°C, where oxidation rates may be low. In this paper, results are presented of the effects of thin titanium nitride coatings in protecting 321 stainless steel against sliding damage in carbon dioxide at 300 and 500°C. At 500°C, the coating prevented the severe wear which occured in the early stages for uncoated specimens and there was a smooth transition from protection by the ceramic coating to protection by the oxide on the substrate, ensuring maintenance of low wear rates and steady friction profiles. At 300°C, breakdown of the coating was followed by metal-metal contact and a sharp increase in friction and wear rate. This was consistent with the behaviour of uncoated steel where wear-protective oxides were unable to develop under the present conditions at 300°C. However, pre-oxidation of both coated and uncoated specimens for long periods at higher temperatures improved considerably the wear performance at thus temperature, due to the increased availability of oxide to develop the wear-protective surfaces.



© EDP Sciences 1993

Comment afficher un lien OpenURL ?

La norme OpenURL est un protocole de transmission de métadonnées permettant de décrire la ressource à laquelle vous souhaitez accéder.

Il s'agit de construire un lien contenant les métadonnées et pointant vers le serveur OpenURL de votre choix. Ce serveur OpenURL peut alors par exemple indiquer l'accessibilité de la ressource, proposer des services complémentaires (recherche, export de référence...). Un tel lien peut être généré selon des moyens différents :

  • Si la bibliothèque gérant votre abonnement a défini un serveur OpenURL pour ses utilisateurs, les liens OpenURL apparaissent automatiquement sur les pages appelées.
  • You can define your own OpenURL resolver with your EDPS Account.
    In this case your choice will be given priority over that of your library.
  • Vous pouvez utiliser un module complémentaire pour votre navigateur (Firefox ou I.E.) qui permet d'afficher les liens OpenURL présents dans une page (voir http://www.openly.com/openurlref/). Vous devrez désactiver ce module si vous souhaitez utiliser le serveur OpenURL que vous avez défini ou celui de votre bibliothèque.