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Estimation of Microhardness and Its Related Parameters on Some Glycine Complexes

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Single crystals of glycine zinc chloride (GZC), glycine lithium sulphate (GLS), triglycine sulphate (TGS) and glycine phosphite (GPI) were grown from their respective aqueous solutions by slow evaporation method. The variation of Vickers hardness with load (10–100 g) on the glycine complexes viz. (101) GZC, (001) GLS, (001) TGS and (010) GPI crystals was studied using microindentation technique. It was found that the hardness increases with applied load up to 40 g and thereafter attains a saturation value for all the crystals under study. From the cracks initiated along the corners of the indentation impression, crack lengths were measured and the fracture toughness value and brittle index number were determined at each load for all the crystals. Some other hardness related parameters viz. yield strength and Young's modulus have been estimated. The anisotropic nature of the crystals is studied using Knoop indentation technique.
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Keywords: CRACK LENGTH; FRACTURE TOUGHNESS; GLYCINE COMPLEXES; HARDNESS ANISOTROPY; MICROHARDNESS

Document Type: Research Article

Publication date: June 1, 2014

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  • Journal of Advanced Physics is an interdisciplinary peer-reviewed journal consolidating research activities in all experimental and theoretical aspects of advanced physics. The journal aims in publishing articles of novel and frontier physics that merit the attention and interest of the whole physics community. JAP publishes review articles, full research articles, short communications of important new scientific and technological findings in all latest research aspects of physics.
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