This paper presents an analysis on two steel grades, subjected to nitriding thermo-chemical treatment after classic / thermo-magnetic treatments (in direct current/alternative current). It was estimated the durability of ...

The paper presents experimental tests made in static and dynamic conditions in order to establish the wear laws for different materials’ couples at different medium temperatures and pressures. Some complex wear laws were ...

Based on the well known fatigue corrosion effects, the mechanical stress and the corrosive environment have a significant effect on the prediction of the lifespan of the equipments that work in corrosive environment, two ...

The paper presents some surfaces changes aspects in fatigue corrosion damage based on electrochemical, mechanical profilometry and microscopically analyze of cylindrical and plate steel specimens. The researches have ...

Based on the well known fatigue corrosion effects, the mechanical stress and the corrosive environment have a significant effect on the prediction of the lifespan of the equipments that work in corrosive environment, two ...

Stainless austenite steel types have a good resistance to corrosion in different natural, industrial environments but their hardness and mechanical resistance are low enough. In order to assure an increased resistance ...

Nitriding at low temperatures, 450-500oC 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 ...

The paper presents the main physico-chemical characteristics (viscosity and superficial tension of zinc-aluminium liquid alloy in view of carry out protected layers on steel sheet with very good properties by thermal ...

Stainless austenitic steels have a good corrosion resistance but reduced abrasion strength due to low strength below 200HV5. By nitriding one may ensure the obtaining of a superficial layer with increased strength that ...

During exploitation of the heat exchangers some damages can appear in the contact region between the gaskets and the stainless steel walls. The studies upon the material were performed using SEM microscopy, X-ray ...