Behaviour at Nitriding in Fluidized Layer of Austenitic Stainless Steels at the Temperature of 1050 °C
Journal Title: Analele Universitatii "Dunarea de Jos" din Galati. Fascicula IX, Metalurgie si Stiinta Materialelor - Year 2007, Vol 30, Issue 2
Abstract
Nitriding at low temperatures, 450-500 oC of austenic stainless steels lead to the obtaining of the tough layers over 1000 HV005 but having thicknesses of tenths of microns. Moreover, nitriding at 500ºC has determined the obtaining of layers of combinations with carbonitrades that caused a severe decrease of corrosion resistance. Nitriding at 1050ºC with an enriched nitrogen austenitic diffusion structure. The nitrogen concentration ensures, by the increase of the diffusion speed, a high layer depth of millimeter tenths,under the saturation limit lead to a reduced strength down to 500 HV005. The nitrated layer has displayed good properties of corrosion resistance and a twofold increase of the abrasive wear strength, which recommend the treatment for numerous practical applications.
Authors and Affiliations
Ovidiu Dima
Keywords
Related Articles
- EP ID EP662369
- DOI -
- Views 63
- Downloads 0
Modern Approaches in Design Optimization of Parts and the Development Trend of Surface Treatments
This paper summarizes the surface engineering technologies having a substantial contribution to increasing operational performance of the parts as well as current trends in the implementation of surface processing techno...
Research Concerning the Influence of Heat Treatment on Physical and Mechanical Properties of Aluminium Based Alloys
This work presents the experimental results concerning the behavior on heat treatment of on aluminum based alloy belonging to the class of aluminum alloys deformable and harden by heat treatment. The laboratory level exp...
Research on the Influence of Chemical Composition and Structural Condition on the Properties of High-Resistance Naval Steel Flat Rolled Products
The performance achieved in the manufacture of large ships and components of special characteristics requires the use of quality metallic materials with physico-chemical and mechanical characteristics able to satisfy the...
Improving Biocompatibility of Co-Cr Alloy Used in Dentistry by Surface Modification with Electrochemical Methods – Corrosion of Untreated Co-Cr Alloy in Solution with Different pH
The use of metals and alloys in dentistry has seen remarkable progress due to the deep research on their biocompatibility or the application of advanced technologies to improve surface properties by controlling material/...
Utilisation of Electrochemical Methods for Characterization of same Corrosion Inhibitors for Steel and Copper
The effect of chromate and molybdate on the corrosion inhibition of copper and steel has been investigated in two eutectics solution at room temperature. We used stationary electrochemical methods and optical microscopy...