Open AccessX-Ray Determination of Debye Temperature and Microhardness of Some HCP Elements Re, Os and Tl
Author(s) -
E. Purushotham
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1119/1/012001
Subject(s) - debye model , debye , debye function , indentation hardness , diffractometer , analytical chemistry (journal) , materials science , debye length , debye sheath , diffraction , yttrium , vickers hardness test , rhenium , crystallography , chemistry , condensed matter physics , metallurgy , ion , crystal structure , microstructure , optics , physics , organic chemistry , chromatography , oxide
The studies on the microhardness have been calculated the hexagonal close packed metals rhenium (Re), osmium (Os) and thallium (Tl). In this paper, the Vickers’s pyramidal indenter and the true hardness values has been evaluated. Debye temperatures of hexagonal close packed (HCP) of these three metals have been calculated by using X- ray diffraction intensities pattern with Philips 3020 powder diffractometer fixed with a proportional counter using filtered CuKα radiation; all the values have been evaluated at room temperature In this present work the calculated Debye temperature values θH 338 K, 426 K and 74 for Re, Os and Tl respectively. The calculated Debye temperatures of these hcp metals have been estimated from the hardness H values 135, 400, 27 kg/mm 2 and are compared with those obtained from Debye temperature of specific heats (θD), Debye temperature of elastic constants (θE) and Debye temperature of X-ray intensity measurements (θM).