NDLI: Effect of saturation parameters on the interaction of titanium alloys with carbon-nitrogen-containing media

Content Provider	Springer Nature Link
Author	Yas’kiv, O. I. Pohrelyuk, I. M. Fedirko, V. M. Dyuh, I. V.
Copyright Year	2004
Abstract	We study some specific features of phase formation and gas saturation in the course of chemical and thermal treatment of VT1-0, OT4, and VT14 titanium alloys in carbon-nitrogen-containing (graphite and nitrogen under atmospheric pressure) and nitrogen-containing (molecular nitrogen under atmospheric pressure) media. Saturation was carried out at 750–1100°C, and the time of isothermal holding was 5 or 20 h. We have shown that, irrespective of the composition of the saturating medium, within the range 750–1000°C, the phase composition of coatings is identical and consists of TiN and Ti$_{2}$N nitrides. The quantitative proportions between them depend on the temperature and time of treatment. Owing to the specific features of the composition of a carbon-nitrogen-containing medium, the depth of the diffusion sublayer increases, and the stoichiometry of cubic nitride decreases, which leads to an increase in the surface microhardness of nitride coatings. Carbonitride coatings are formed only at high saturation temperature (1100°C). Their maximum hardness is 2.5 GPa higher than that of nitrides formed under similar conditions.
Starting Page	391
Ending Page	398
Page Count	8
File Format	PDF
ISSN	1068820X
Journal	Materials Science
Volume Number	40
Issue Number	3
e-ISSN	1573885X
Language	English
Publisher	Kluwer Academic Publishers-Consultants Bureau
Publisher Date	2004-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Characterization and Evaluation Materials Mechanics
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Condensed Matter Physics Materials Science Mechanical Engineering

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