PSI - Issue 20

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2018) 000–000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2018) 000–000

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ScienceDirect

Procedia Structural Integrity 20 (2019) 236–241

1st International Conference on Integrity and Lifetime in Extreme Environment (ILEE-2019) Structure and strength of the interfacial zone in solid-phase contact interaction of diamond with transition metals Sharin P.P., Akimova M.P.*, Yakovleva S.P. Institute of physical and technical problems of the North, Oktyabrskaya st.,1, Yakutsk, 677980, Russia Abstract The features of intermediate layers formed as a result of solid phase contact interaction of diamond with carbon-reactive metals— chromium, cobalt, iron and titanium, were studied under temperature-time mode corresponding to the sintering of copper-impregnated cemented carbide matrices of diamond tools. The structural-phase state of the diamond-metal transition zone was studied by scanning electron microscopy, X-ray diffraction methods and Raman spectroscopy. The diamond-metal bond strength was determined by shear testing. It was found that a metal-carbide coating to diamond and consisting of the interacting metal, carbide phases, traces of oxide and graphite, with different bonding strength to diamond is formed at the transition zone during solid-state contact interaction of diamond with transition metals. The formation of a durable metal-carbide layer, essentially a metallized coating, during the contact interaction of diamond with iron and chromium can be used in the development of technology that provides an increased level of diamond retention in the cemented carbide matrix composites. 1st International Conference on Integrity and Lifetime in Extreme Environment (ILEE-2019) Structure and strength of the interfacial zone in solid-phase contact interaction of diamond with transition metals Sharin P.P., Akimova M.P.*, Yakovleva S.P. Institute of physical and technical problems of the North, Oktyabrskaya st.,1, Yakutsk, 677980, Russia Abstract The features of intermediate layers formed as a result of solid phase contact interaction of diamond with carbo -reactive metals— chromium, cobalt, iron and titanium, were stu ied under temperature-time mode corresponding to the sintering of copper-impregnated cement d carbide matrices of diamond tools. Th structural-phase state of the diamond-metal transition z e was studied by scan ing electron microscopy, X-ray diffraction methods and Raman spectroscopy. The diamond-metal bo d strength was determined by shear testing. It was found that a metal-carbide coating to dia ond and consisting of the interacti g metal, carbide phases, traces of oxide and graphite, it different bonding strength to diamond is formed at the transition zone duri g solid-state contact interaction of diam nd with tr nsition met ls. The formation of a durable metal-carbi e layer, essentially a metallized coating, during the contact interaction f diamond wit iron and chromiu can be used in the development of technology that provides an increased level of diamond retention in the cemented carbide matrix composites.

© 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ILEE-2019 organizers © 2019 The Author(s). Published by Elsevier B.V. Peer-review under responsibility of the ILEE-2019 organizers © 2019 The Author(s). Published by Elsevier B.V. Peer-review under responsibility of the ILEE-2019 organizers

Keywords: Contact interaction; diamond; transition metals; interphase zone; contact strength. Keywords: Contact interaction; diamond; transition metals; interphase zone; contact strength.

1. Introduction The main disadvantage of existing diamond-containing composite materials used as working elements of diamond tools is the low adhesion strength of diamond grains with the matrix. It leads to premature loss of diamond grains from the tool matrix, increases diamond consumption and generally reduces tool performance as proved by 1. Introduction The main disadvantage of existing diamond-containing composite materials used as working elements of diamond tools is the low adhesion strength of diamond grains with the matrix. It leads to premature loss of diamond grains from the tool matrix, increases diamond consumption and generally reduces tool performance as proved by

* Corresponding author. Tel.: +7-914-224-53-81. E-mail address: mar1ya_ak1mova@mail.ru * Correspon ing author. Tel.: +7-914-224-53-81. E-mail address: mar1ya_ak1mova@mail.ru

2452-3216 © 2019 The Author(s). Published by Elsevier B.V. Peer-review under responsibility of the ILEE-2019 organizers 2452 3216 © 2019 Th Author(s). Publis d by lsevier B.V. Peer-review under responsibility of the ILEE-2019 organizers

2452-3216 © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the ILEE-2019 organizers 10.1016/j.prostr.2019.12.145