Viscosity and Density of Co-B Liquid Fusions

Abstract:

Kinematic viscosity and density of cobalt liquid alloys with boron is studied. Range of boron concentration was from 1 to 8 mass percent. The chemical composition of real industrial alloys is in limits of this range of concentration. Viscosity and density measurements of all samples are taken in a wide temperature interval. Measurements of viscosity are taken by method of torsional fluctuations of a crucible with fusion. Measurements of density are taken by method of a sessile drop. Existence of density data significantly increased the accuracy of processing of experimental data of viscosity. It is revealed that kinematic viscosity can be different at one and same chemical composition of an alloy. It is established that upon transition through the eutectic concentration of boron, nature of viscosity dependences from temperature of a liquid alloy changes. The explanation option of the found regularities is offered.

• Periodical: Key Engineering Materials (Volume 705)
• Pages: 209-213
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.705.209
• Online since: August 2016
• Authors: Viktor V. Konashkov*, Vladimir V. Vyukhin, Vladimir S. Tsepelev
• Keywords: Amorphous Metal Materials, Kinematic Viscosity, Properties of Liquid Metal Fusion

References

[1] H. Sabarou, A. Ataie, Manipulating the structure and morphology of Cobalt-Boron nano-particles through a chemical approach, Advanced Materials Research. 829 (2014) 762-766.

DOI: 10.4028/www.scientific.net/amr.829.762

[2] Yu. N. Bekish, S.S. Grabehikov, L.S. Tsybul'skaya, V.A. Kukareko, S.S. Perevoznikov, Electroplated Cobalt-Boron Alloys: Formation and Structure Features, Protection of metals and physical chemistry of surfaces. 49 (2013) 319-324.

DOI: 10.1134/s2070205113030040

[3] M.J. Bermingham, S.D. McDonald, D.H. StJohn, M.S. Dargusch, Matthew, The effect of boron on the refinement of microstructure in cast cobalt alloys, Journal of Materials Research. 26 (2011) 951-956.

DOI: 10.1557/jmr.2011.21

[4] Tian Hua, Liao YunLong, Zhang Chong, Zhao JiJun, Wen Bin, Wang Qing, Dong Chuang, A first-principle study of the structural and electronic properties of amorphous Cu-Zr alloys, Science China. Physics, Mechanics & Astronomy. (54) 2011, 249-255.

DOI: 10.1007/s11433-010-4136-5

[5] V.V. Konashkov, V.S. Tsepelev, V.V. V'yukhin, A.M. Povodator, A.I. Podol'skaya, A Computer-Aided Plant for Studying the Kinematic Viscosity of High-Temperature Metallic Melts, Instruments and Experimental Techniques. 54 (2011) 284-285.

DOI: 10.1134/s0020441211020187

[6] R.F. Brooks, A.P. Day, R.J. Andon, L.A. Chapman, K.C. Mills, P.N. Quested, Measurement of viscosities of metals and alloys with an oscillating viscometer, High temperatures – High Pressures. 33 (2001), 73-82.

DOI: 10.1068/htwu139

[7] A.K. Das, P.K. Das, Equilibrium shape and contact angle of sessile drops of different volumes – Computation by SPH and its further improvement by DI, Chemical Engineering Science. 65 (2010) 4027-4037.

DOI: 10.1016/j.ces.2010.03.043

[8] X. Noblin, A. Buguin, F. Brochard-Wyart, Vibrations of sessile drops, The European Physical Journal Special Topics. 166 (2009) 7-10.

DOI: 10.1140/epjst/e2009-00869-y