Properties of Oxynitride Steel Coatings Obtained Through Three-Stage Processes of Nitriding Combined with Oxidation

Properties of Oxynitride Steel Coatings Obtained Through Three-Stage Processes of Nitriding Combined with Oxidation

The article discusses the effect of preliminary oxidation on the properties of 38Cr2MoAl nitrided steel. A three-stage process consisting of pre-oxidation, nitriding, and subsequent vapor oxidation is described. The advantage of three-stage processes over stepwise nitriding is demonstrated in terms...

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Veröffentlicht in:Metallurgist (New York) 2021-11, Vol.65 (7-8), p.886-892
Hauptverfasser: Boynazarov, U. R., Petrova, L. G., Brezhnev, A. A., Bibikov, P. S.
Format: Artikel
Sprache:eng
Schlagworte:
Bend strength
Characterization and Evaluation of Materials
Chemistry and Materials Science
Coatings
Corrosion and anti-corrosives
Corrosion resistance
Ductility tests
Materials Science
Metallic Materials
Nitriding
Oxidation
Oxynitrides
Salt spray tests
Steel
Wear resistance
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Beschreibung
Zusammenfassung:The article discusses the effect of preliminary oxidation on the properties of 38Cr2MoAl nitrided steel. A three-stage process consisting of pre-oxidation, nitriding, and subsequent vapor oxidation is described. The advantage of three-stage processes over stepwise nitriding is demonstrated in terms of increased wear resistance of the oxynitride layer given different types of lubrication. In addition, oxynitrided steel is characterized by increased strength and ductility during bending tests, as well as higher corrosion resistance in salt spray tests as compared to non-nitrided and chrome-plated steel.
ISSN:0026-0894
1573-8892
DOI:10.1007/s11015-021-01225-7