ION-MODIFIED NANOSTRUCTURED TITANIUM AND ZIRCONIUM ALLOYS FOR MEDICINE AND INDUSTRY

Kononov A.G., Researcher, Center for Structural Studies and tribomechanical tests of materials and engineering products, STC "Technology of mechanical engineering and process equipment", the Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus

Kukareko V.A., Doctor of Physical and Mathematical Sciences, Associate Professor, Head of the Center for Structural Research and Tribo-mechanical Testing of Materials and Engineering Products for Collective Use, the Joint Institute of Mechanical Engineering of the National Academy of Sciences of Belarus, Minsk, Republic of Belarus,  This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.
Beli A.V., Corresponding member of the NAS of Belarus, Doctor of Technical Sciences, Professor, Deputy Director in Science, Physical and Technical Institute of the NAS of Belarus, Minsk, Republic of Belarus
Sharkeev Yu.P., Doctor of Physical and Mathematical Sciences, Professor, Institute of Strength Physics and Materials Science of the Siberian Branch of the Russian Academy of Sciences, Tomsk, Russian Federation

The effect of combined treatment consisting of severe plastic deformation and ion beam treatment on structure and tribological properties of titanium, zirconium and "Zr - 2,5 % Nb" alloy was investigated. It was shown that formation of ultrafine-grained structure in titanium and zirconium alloys produced by severe plastic deformation results in sufficient increase in materials hardness in 1,6-2 times. Ion modification of deformed titanium and zirconium based alloys ensures further enhancement of surface microhardness up to 3500-3700 MPa, improvement of wear resistance of materials up to 30 times and reduction of friction coefficient by 50 %. Based on the results obtained it was shown that Ti- and Zr-based alloys processed by combined treatment consisting of severe plastic deformation and ion-beam nitriding may be regarded as a promising materials for production of biocompatible high-loaded orthopedic implants.

• Balazic M. [et al.]. Review: Titanium and Titanium Alloy Applications in Medicine. International Journal of Nano and Biomaterials, 2007, Vol. 1, no.1, pp. 3-34. 
• Segal V.M. [et al.]. Processy plasticheskogo strukturoobrazovanija metallov [Processes of plastic structure formation of metals]. Minsk, Nauka i tehnika Publ., 1994. 216 p. 
• Belyj A.V., Kukareko V.A., Patejuk A. Inzhenerija poverhnostej konstrukcionnyh materialov koncentrirovannymi potokami ionov azota [Surface engineering of structural materials concentrated with flows of nitrogen ions]. Minsk, Belorus. Nauka Publ., 2007. 244 p. 
• Belyj A.V., Kukareko V.A., Bilenko Je.G. Soprotivlenie kontaktnomu i ustalostnomu razrusheniju hromistyh stalej, poverhnostno legirovannyh ionami azota [Contact resistance and fatigue failure of chromium steels, surface doped with nitrogen]. Vestnik NAN Belarusi [Herald of the NAS of Belarus], 2005, no. 1, pp. 5-9. 
• Belyj A.V. Vysokointensivnaja nizkojenergeticheskaja implantacija ionov azota [High-intensity low-energy implantation of nitrogen ion]. Fizicheskaja mezomehanika [Physical mesomechanics], 2002, Vol. 5, no. 1, 95 p. 
• Karavaev M.G., Kukareko V.A. Avtomatizirovannyj tribometr s vozvratno-postupatel'nym dvizheniem [Automatized tribometer with reciprocating]. Trudy Matematicheskoi Mezhdunarodnoi nauchno-technicheskoi Konferencii “Nadezhnost' mashin i tehnicheskih system” [Proc. Mathematical International Scientific Conference "Reliability of Machines and Technical Systems]. Minsk, 2001, Vol. 1, pp. 37-39. 
• Krivoglaz M.A. Difrakcija rentgenovskih luchej i nejtronov v neideal'nyh kristallah [X-ray diffraction and neutron in imperfect crystals]. Kiev, Nauk. Dumka Publ., 1983. 408 p. 
• Honikomb R. Plasticheskaja deformacija metallov [Plastic deformation of metals]. Moscow, Mir Publ., 1972. 408 p. 
• Bethune I.T., Williams C.D. The α/α+β boundary in Zr-Nb system. J. Nucl. Mater, 1969, Vol. 29, no. 1, pр. 129-132. 
• Markov D.P., Kelli D. Adgezionno-iniciiruemye tipy katastroficheskogo iznashivanija [Adhesion-initiated types of catastrophic wear]. Trenie i iznos [Friction and wear], 2002, vol. 23, no. 5, pp. 483-493. 
• Vishnjakov Ja.D. Sovremennye metody issledovanija struktury deformirovannyh kristallov [Modern methods of studying the structure of deformed crystals]. Moscow, Metallurgija Publ., 1975. 480 p.