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Mechanical Properties Study of Borosilicate Glass Loaded with Vanadium and Cobalt by Nanoindentation Technique
1 , * 2 , 1 , 2 , 3
1  Housing and Building National Research Center, Building physics Institute.
2  Egyptian Petroleum Research Institute (EPRI), Department of Petroleum Applications
3  Al-Azhar University, Faculty of Science, Department of Physics
Academic Editor: Nunzio Cennamo


Nanoindentation test is used to investigate the mechanical properties of borosilicate glass with composition (mol%) 40 Na2B4O7 - 40 SiO2 - (20– x) V2O5 - x Co2O3, with x=0, 1, 3, and 5 mol% were prepared by melt quenching technique at 1373 K. A load-displacement curve was plotted and used to extract some mechanical properties of the glass samples. The creep deformation behavior of the glass composition was studied; the maximum creep rate was observed for the sample that contains the highest vanadium ratio, while the creep rate decreased with decreasing vanadium concentration in glass samples. The hardness and the reduced modulus of elasticity were obtained. The Maxwell-Voigt model was applied to investigate the relaxation kinetics and deformation of the bulk glass.

Keywords: Borosilicate glass; Nanoindentation test; Mechanical Properties