Journal of Siberian Federal University. Engineering & Technologies / Developing Effective ways Formed of Structure and Properties of Hard Metal Composites Modified by Nanoparticles

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Issue
Journal of Siberian Federal University. Engineering & Technologies. 2014 7 (3)
Authors
Gordeev, Yuri I.; Abkaryan, Artur K.; Binchurov, Aleksandr S.; Jasinski, Vitaly B.; Karpov, Igor V.; Lepeshev, Anatoliy A.; Khasanov, Oleg L.; Dvilis, Edgar S.
Contact information
Gordeev, Yuri I.:Siberian Federal University 79 Svobodny, Krasnoyarsk, 660041, Russia; Abkaryan, Artur K.:Siberian Federal University 79 Svobodny, Krasnoyarsk, 660041, Russia; Binchurov, Aleksandr S.:Siberian Federal University 79 Svobodny, Krasnoyarsk, 660041, Russia; Jasinski, Vitaly B.:Siberian Federal University 79 Svobodny, Krasnoyarsk, 660041, Russia; Karpov, Igor V.:Siberian State Aerospace University 31 «Krasnoyarskiy Rabochiy» prosp., Krasnoyarsk, 660014, Russia; Lepeshev, Anatoliy A.:Siberian State Aerospace University 31 «Krasnoyarskiy Rabochiy» prosp., Krasnoyarsk, 660014, Russia; Khasanov, Oleg L.:National Research Tomsk Polytechnic University 30 Lenin, Tomsk, 634050, Russia; Dvilis, Edgar S.:National Research Tomsk Polytechnic University 30 Lenin, Tomsk, 634050, Russia
Keywords
nano-particles; hard metal composites; microstructure parameters; transverse rupture toughness; spark plasma sintering; x-ray phase analysis; grain size; elastic modulus
Abstract

New data about influence of ceramic nanoparticles additives on the hard metals WC-Co properties are received. Complex investigation of hard metal using suggested conventional mechanic testing methods combined with metallography, electron microscopy and x-ray phase analysis enabled to establish stable correlating links between volume content of nanoparticles whith average sizes of carbide and micro structure parameters and strength of hard metals. Nanoparticles introduced into a binder size decrease of the metal interlayer and therefore increase the strength of binder and composite as a whole. The reduction of the carbide grain average size was found out as well (owing to nanoparticles blocking influence on recrystallization). The test results display that the modification thought nanoparticles enables to improve the main final physical and mechanical properties of hard metals properties: hardness, fracture toughness, transverse rupture toughness, elastic modulus, wear resistance

Pages
270-289
Paper at repository of SibFU
https://elib.sfu-kras.ru/handle/2311/10375

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