NDLI: Nitriding of steel and titanium surface layers under the action of compression plasma flows

Content Provider	Springer Nature Link
Author	Cherenda, N. N. Shimanskii, V. I. Uglov, V. V. Astashinskii, V. M. Ukhov, V. A.
Copyright Year	2012
Abstract	The elemental and phase compositions of St3 steel and VT1-0 titanium surface layers nitrided by the action of compression plasma flows (CPFs) have been investigated. The plasma flow parameters are shown to be correlated with the modified-layer nitrogen content. The basic mechanism by which the steel and titanium surface layers are saturated with nitrogen has been revealed. The performed experiments indicate that an increase in the absorbed energy density leads to a decrease in the nitrogen concentration because a shock-compressed layer is formed in the near-surface region, impeding nitrogen diffusion into the sample. The higher nitrogen concentration of surface layers treated by CPFs is achieved by increasing the pressure of the residual nitrogen atmosphere. It has been established that γ$_{N}$-Fe nitrous austenite, α″-Fe(N) and α′-Ti(N) martensitic phases, and γ′-Fe$_{4}$N and δ-TiN$_{ x }$ nitrides can be produced by nitriding the surface layers of St3 steel and VT1-0 titanium.
Starting Page	319
Ending Page	325
Page Count	7
File Format	PDF
ISSN	10274510
Journal	Journal of Surface Investigation. X-ray, Synchrotron and Neutron Techniques
Volume Number	6
Issue Number	2
e-ISSN	18197094
Language	English
Publisher	SP MAIK Nauka/Interperiodica
Publisher Date	2012-04-17
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Surfaces and Interfaces, Thin Films
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Surfaces, Coatings and Films

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