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High Temperature Material Processes (An International Quarterly of High-Technology Plasma Processes)

An International Journal

ISSN for PRINT: 1093-3611

Institutional price:	$604.00
Issues per year:	4

Best Paper Award Selection - Editorial Board Site

2004, Volume8

169 pages

DOI: 10.1615/HighTempMatProc.v8.i4

Issue price - $144.00

COMPRESSION PLASMA FLOW INTERRACTION WITH TITANIUM-ON-STEEL SYSTEM: STRUCTURE AND MECHANICAL PROPERTIES

V. V. Uglov
Dpt. of Solid State Physics - Belarusian State University, 4, F.Nezavisimosti ave., 220030 Minsk, Belarus

V. M. Anishchik
Dpt. of Solid State Physics - Belarusian State University, 4, F.Nezavisimosti ave., 220030 Minsk, Belarus

N. N. Cherenda
Belarusian State University, 4, F.Nezavisimosti ave., 220030 Minsk, Belarus

A. K. Stalmashonak
Belarusian State University, 4, F.Nezavisimosti ave., 220030 Minsk, Belarus

V. M. Astashinski
Institute of Molecular and Atomic Physics, National Academy of Sciences of Belarus, 70 Nezavisimosti ave., 220072 Minsk, Belarus

A. M. Kuzmitski
Institute of Molecular and Atomic Physics, National Academy of Sciences of Belarus, 70 Nezavisimosti ave., 220072 Minsk, Belarus

A. V. Punko
Belarusian State University of Informatics and Radioelectronics, 6, P. Brovki Str., Minsk, 220027 Belarus

ABSTRACT

The influence of compressive plasma flow (CPF) treatment on the structure and mechanical properties of titanium-on-steel system is studied. The modification is due to the melting of the material by a nitrogen plasma flow with an energy density ∼ 1,3·10⁹ W/m² and pulse duration ∼ 100 μs and the subsequent fast resolidification accompanied by fast diffusion of coating components into the substrate. The structural-phase state and element structure are analyzed by X-Ray diffraction method (XRD) and scanning electron microscopy (SEM). As a result of the treatment, the formation of iron-titanium solid solution and titanium nitride is observed in the modified layer ∼ 15 μm in thickness. Phase and structural changes result in the increase in microhardness of the treated system two times more as the microhardness of the initial state of carbon steel used as a base material. The model of impurity diffusion in terms of temperature and pressure gradients which takes into account the acceleration of diffusion transport due to liquid phase formation during the melting is suggested.