Obrabotka Metallov 2015 No. 2

ОБРАБОТКА МЕТАЛЛОВ № 2 (67) 2015 44 МАТЕРИАЛОВЕДЕНИЕ OBRABOTKAMETALLOV (METAL WORKING AND MATERIAL SCIENCE) N 2(67), April – June 2015, Pages 39–45 The technology of producing a composite material based on a multifunctional oxide ceramics Okovity V.А. , Ph.D. (Engineering), Leading Researcher, e-mail: vasil_ok@inbox.ru Panteleenko F.I. , D.Sc. (Engineering), Professor, Corresponding Member, National Academy of Sciences of Belarus, e-mail: panteleyenkofi@mail.ru Talako T.L. , Ph.D. (Engineering), Leading Researcher, e-mail: talako@tut.by Panteleenko А.F. , Scientific Associate, e-mail: alex_1895@mail.ru Belarussian National Technical University, 65 Nezavisimosty avenue, Minsk, 220013, Republic of Belarus Abstract The synthesis of composite SHS powders with components of solid lubricant is described. The powders of the following composition: Al 2 O 3 +30%TiO 2 +12.5%MoS 2 ; Al 2 O 3 +30%TiO 2 +12.5%CaF 2 were investigated. The synthesis of compositions was carried out in a reactor using self-propagation mode without supply of energy from an external source in a nitrogen-oxygen atmosphere with an oxygen content of 10…25 wt.% and a pressure of 0.1…0.9 MPa. Such atmosphere is needed for the oxidation reaction of titanium powder. For spheroidization particles of the composite powder were added into the plasma jet and sprayed into a steel cylinder with a length of 1 m filled with argon. The degree of spheroidization was determined using the form factor of the particles by optical metallography. The power of the plasma jet was varied from 30 to 40 kW. The resulting powders are characterized by a complex geometric shape and the development of surface relief of the particles. Application of SHS powders, in contrast to the agglomerates, allows forming high-density coating of eutectic composition promoting improvement physical and mechanical properties. Parameters of friction and wear coatings consisting of carbide ceramic powders and ceramic oxide powders obtained by self-propagating high-temperature synthesis are investigated. The coatings obtained of powder Al 2 O 3 -30% TiO 2 -12.5% MoS 2 ; produced by self-propagating high-temperature synthesis, are 1.2 times more wear-resistant with the lubricant and 1.3 times - under dry friction for cast iron and steel than the coating obtained from the powder Ni80Cr20-12.5% MoS 2 -55% TiC. Keywords: composite powders, solid lubricant, synthesis, spheroidization of particles, plasma jet, powders investigation. DOI: 10.17212/1994-6309-2015-2-39-45 References 1. Amelin D.V., Rymorov E.V. Novye sposoby vosstanovleniya i uprochneniya detalei mashin [The new methods of reducing and hardening of machine components]. Moscow, Agropromizdat Publ., 1987. 151 p. 2. Tseev N.A., Kozelkin V.V., Gurov A.A. Materialy dlya uzlov sukhogo treniya, rabotayushchikh v vakuume. Spravochnik [The materials for dry friction units that operated in vacuum. Reference book]. Moscow, Mashinostroe- nie Publ., 1991. 188 p. 3. Braithwaite E.R. Solid Lubricants and Surfaces . 1 st ed. Oxford, Pergamon Press, 1964. 296 p. ISBN-10: 1483124398, ISBN-13: 978-1483124391 (Russ. ed. Breitueit E.R. Tverdye smazochnye materialy i antifriktsionnye pokrytiya . Translated from English S.D. Klyushnev. Ed. by V.V. Sinitsyna. Moscow, Khimiya Publ., 1967. 320 p.). 4. Crankshaft repaired at 30 % saving. Welding Journal , 1999, vol. 58, no. 2, pp. 710–715. 5. Gorik P.N., Norov V.A., Rogov N.A. [The plasma spraying of wear-resistant and antifriction coatings]. Tezisy dokladov 5 mezhdunarodnoi nauchno-prakticheskoi konferentsii “Avtomatizatsiya proektirovaniya i proizvodstva izdelii v mashinostroenii” [Proceedings of the 5th International Scientific and Practical Conference “The automation of design and producing of product in mechanical engineering”]. Lugansk, VUGU Publ., 1996, pp. 196–206. (In Russian) 6. Ilyuschenko A.F., Okovity V.A., Shevtsov A.I. Formirovanie iznosostoikikh plazmennykh pokrytii na osnove kompozitsionnykh samosmazyvayushchikhsya materialov [The creation of wear-resistant plasma coatings on the base of composite self-lubricating materials]. Minsk, Besprint Publ., 2005. 253 p.