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EN
Glow-discharge assisted treatments utilize both the nitriding and carbonitriding processes and also the PACVD technique. All these processes permit producing antiabrasive and anticorrosive layers, that show a high fatigue strength. The glow discharge assisted techniques are still being further developed, by e.g. producing the multicomponent layers on the tried parts by combined methods. The present paper presents the results of metallographic, phase composition and corrosion resistance examination of surface layer produced on Armco iron using glow-discharge nitriding and oxidizing processes combined in a single technological operation. The results show that produced multicomponent layers have good corrosion resistance. These processes create the basis for widening the application range of glow-discharge treatments.
EN
The recent rapid progress in surface treatment techniques dictates that titanium alloys should have an improved resistance to frictional wear without any loss of their high corrosion resistance. These requirements can be satisfied by producing surface layers of specified microstructure and phase composition. The paper presents the results of metallographical examinations, corrosion and wear resistance tests and SEM observations of the surface layers produced on the OT4-0 titanium alloy using the nitriding and carbonitriding process under glow discharge conditions. These techniques permit controlling the chemical composition, thickness and microstructure of the surface layers, parameters that essentially affect their performance properties such as the corrosion resistance and frictional wear resistance.
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