Effect of New Superhard Phases Formation on Properties of Composite Processed by SHS

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A composite was produced from initial powder mixture of B4C (70 wt.%) and Al (30 wt. %) with WC-Co additives introduced during ball-milling and acting as catalysts by self-propagating high-temperature synthesis and followed by heat treatment of raw samples under gaseous nitrogen flow at 650, 800, 1000, 1150 and 1450 °C, respectively. Formation of different new superhard phases was detected via XRD investigation and analysis of microstructures. Micromechanical properties were tested by nanoindentation. The tribological behavior in dry sliding conditions of the composite was investigated using the ball-on-disk technique against alumina balls. The friction coefficient of the composite increased and wear rate decreased with formation of c-BC2N, c-BN, B13C2, W2B5, Al3BC, AlN, etc. contents during heat treatment at increased temperatures.

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Periodical:

Edited by:

Prof. Irina Hussainova

Pages:

137-142

Citation:

L. Kommel et al., "Effect of New Superhard Phases Formation on Properties of Composite Processed by SHS", Key Engineering Materials, Vol. 527, pp. 137-142, 2013

Online since:

November 2012

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[1] J. Pirso, M. Viljus, K. Juhani, S. Letunovitš, Two-body dry abrasive of cermets, Wear 266 (2009) 21-29.

DOI: https://doi.org/10.1016/j.wear.2008.05.005

[2] P. Montmitonnet, Introduction to tribology in manufacturing processes, Wear 286-287 (2012) 1-2.

[3] P. Karlsson, A. Gåård, P. Krakhmalev, J. Bergström, Galling resistance and wear mechanisms for cold-work tool steels in lubricated sliding against high strength stainless steel sheets, Wear 286-287 (2012) 92-97.

DOI: https://doi.org/10.1016/j.wear.2011.04.002

[4] D. -S. Lim, D. -H. You, H. -J. Choi, S. -H. Lim, H. Jang, Effect of CNT distribution on tribological behavior of alumina-CNT composites, Wear 259 (2005) 539-544.

DOI: https://doi.org/10.1016/j.wear.2005.02.031

[5] A. Borrell, R. Torrecillas, V.G. Rocha, A. Fernández, V. Bonache, M.D. Salvador, Effect of CNFs content on tribological behavior of spark plasma sintering ceramic-CNFs composites, Wear 274-275 (2012) 94-99.

DOI: https://doi.org/10.1016/j.wear.2011.08.013

[6] E.M. Sharifi, F. Karimzadeh, M.H. Enayati, Fabrication and evaluation of mechanical and tribological properties of boron carbide reinforced aluminum matrix nanocomposites, Materials & Design 32 (2011) 3263-3271.

DOI: https://doi.org/10.1016/j.matdes.2011.02.033

[7] M. Tang, D. He, W. Wang, H. Wang, C. Xu, F. Li, J. Guan, superhard solid solution of diamond and cubic boron nitride, Scripta Materialia 66 (2012) 781-784.

DOI: https://doi.org/10.1016/j.scriptamat.2012.02.006

[8] V.L. Solozhenko, S.N. Dib, N.V. Novikov, Mechanical properties of cubic BC2N, a new superhard phase, Diamond and Related Materials 10 (2001) 2228-2231.

DOI: https://doi.org/10.1016/s0925-9635(01)00513-1

[9] K. Yuge, A. Seko, Y. Koyama, F. Oba, I. Tanaka, First-principles-based phase diagram of the cubic BNC ternary system, Physical Review B 77 (2008) 094121.

DOI: https://doi.org/10.1103/physrevb.77.094121

[10] V.A. Bunin, I.P. Borovinskaya, M. Yu. Senkovenko, V.I. Ponomarev, T.I. Ignat'eva, Properties of boron carbonitride prepared by self-propagating high-temperature synthesis, Inorganic Materials 39-4 (2003) 357-361.

[11] L. Kommel, R. Metsvahi, M. Viljus, E. Kimmari, K. Kolju, R. Traksmaa, Design of superhard c-BC2N-precipitates in B4C/Al-composites through SHS and heat treatment, 8th Int. DAAAM Baltic Conf. 19-21 April 2012, Tallinn, Estonia, pp.645-650.

[12] T. Sasaki, M. Akaishi, S. Yamaoka, Y. Fujiki, T. Oikawa, Simultaneous crystallization of diamond and cubic boron nitride from the graphite relative BC2N under high pressure/high temperature conditions: Chemistry of Materials 5 (1993) 695-699.

DOI: https://doi.org/10.1002/chin.199333018

[13] A.G. Merzhanov, 40 years of SHS: a lucky start of a scientific discovery, ISMAN, Russia, (2012).

[14] L. Kommel, USSR Patent 1, 836, 190 A3. (1991).

[15] L. Kommel, E. Kimmari, Solid phase's transformations in boron carbide based composites during heat treatment. TTP, Solid State Phenomena138 (2008) 175-180.

DOI: https://doi.org/10.4028/3-908451-49-3.175

[16] P.S. Kislij, M.A. Kuzenkova, N.I. Bodnaruk, B.L. Grabchuk, Boron Carbide, Naukova Dumka, Kiev, 1988 (in Russian).

[17] Information on http: /www. micromaterials. net/Hardness_Scale_Conversion. asp.

[18] A.N. Enyashin, A.L. Ivanovskii, Structural, elastic, and electronic properties of icosahedral boron subcarbides (B12C3, B13C2), subnitride B12N2 and suboxide B12O2 from data of SCC-DFTB calculations, Physics of the Solid State, 53-8 (2011).

DOI: https://doi.org/10.1134/s1063783411080117