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Title: Compression behavior of WC and WC-6%Co up to 50 GPa determined by synchrotron x-ray diffraction and ultrasonic techniques

Abstract

The equations of state (pressure-volume relations) for WC and WC-6%Co have been determined by synchrotron x-ray diffraction measurements on polycrystalline powder samples loaded in a diamond anvil cell as well as by ultrasonic measurements on hot-pressed polycrystalline, cylindrical samples loaded in a multianvil high-pressure apparatus. The third-order Birch-Murnaghan equation of state fitted to the x-ray diffraction pressure-density sets of data, collected up to 50 GPa, yields ambient pressure isothermal bulk moduli of K{sub oT} = 411.8{+-}12.1 GPa and K{sub oT} = 402.4{+-}14.1 GPa, with pressure derivatives of K{sub oT}' = 5.45{+-}0.73 and K{sub oT}' = 7.50{+-}0.86 for WC and WC-6%Co, respectively. The ultrasonic measurements, conducted up to 14 GPa, enabled the determination of the pressure dependences of both bulk and shear moduli. Using Eulerian finite strain equations to fit the ultrasonic data, we obtain for WC an ambient pressure adiabatic bulk modulus of K{sub os} = 383.8{+-}0.8 GPa, and K{sub os}' = 2.61{+-}0.07 for its pressure derivative, while values of G{sub os} = 304.0{+-}0.3 GPa and G{sub os}' = 1.50{+-}0.09 were determined for the shear modulus and its pressure derivative, respectively. Meanwhile, for WC-6%Co, we obtain K{sub os} = 357.5{+-}1.0 GPa, K{sub os}' = 5.18{+-}0.14, G{sub os} = 253.5{+-}0.3 GPa,more » and G{sub os}' = 1.09{+-}0.09. The equations of state derived from the ultrasonic data are in good agreement with extrapolated results reported previously by Day and Ruoff [J. Appl. Phys. 44, 2447 (1973)] and Gerlich and Kennedy [J. Appl. Phys. 50, 3331 (1978)] who carried out measurements up to 0.2 and 1.0 GPa, respectively.« less

Authors:
; ; ; ; ; ;  [1]
  1. Hawaii
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
USDOE
OSTI Identifier:
1006718
Resource Type:
Journal Article
Journal Name:
J. Appl. Phys.
Additional Journal Information:
Journal Volume: 103; Journal Issue: 2008; Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
ENGLISH
Subject:
36 MATERIALS SCIENCE; CERMETS; COBALT ALLOYS; COMPRESSIBILITY; COMPRESSION; DIAMONDS; EQUATIONS OF STATE; PRESSURE DEPENDENCE; PRESSURE RANGE GIGA PA; SHEAR; STRAINS; SYNCHROTRONS; TUNGSTEN ALLOYS; TUNGSTEN COMPOUNDS; ULTRASONIC WAVES; X-RAY DIFFRACTION

Citation Formats

Amulele, George M, Manghnani, Murli H, Marriappan, Sekar, Hong, Xinguo, Li, Fengung, Qin, Xiomei, Liermann, Hanns P, and CIW). Compression behavior of WC and WC-6%Co up to 50 GPa determined by synchrotron x-ray diffraction and ultrasonic techniques. United States: N. p., 2008. Web. doi:10.1063/1.2938024.
Amulele, George M, Manghnani, Murli H, Marriappan, Sekar, Hong, Xinguo, Li, Fengung, Qin, Xiomei, Liermann, Hanns P, & CIW). Compression behavior of WC and WC-6%Co up to 50 GPa determined by synchrotron x-ray diffraction and ultrasonic techniques. United States. https://doi.org/10.1063/1.2938024
Amulele, George M, Manghnani, Murli H, Marriappan, Sekar, Hong, Xinguo, Li, Fengung, Qin, Xiomei, Liermann, Hanns P, and CIW). 2008. "Compression behavior of WC and WC-6%Co up to 50 GPa determined by synchrotron x-ray diffraction and ultrasonic techniques". United States. https://doi.org/10.1063/1.2938024.
@article{osti_1006718,
title = {Compression behavior of WC and WC-6%Co up to 50 GPa determined by synchrotron x-ray diffraction and ultrasonic techniques},
author = {Amulele, George M and Manghnani, Murli H and Marriappan, Sekar and Hong, Xinguo and Li, Fengung and Qin, Xiomei and Liermann, Hanns P and CIW)},
abstractNote = {The equations of state (pressure-volume relations) for WC and WC-6%Co have been determined by synchrotron x-ray diffraction measurements on polycrystalline powder samples loaded in a diamond anvil cell as well as by ultrasonic measurements on hot-pressed polycrystalline, cylindrical samples loaded in a multianvil high-pressure apparatus. The third-order Birch-Murnaghan equation of state fitted to the x-ray diffraction pressure-density sets of data, collected up to 50 GPa, yields ambient pressure isothermal bulk moduli of K{sub oT} = 411.8{+-}12.1 GPa and K{sub oT} = 402.4{+-}14.1 GPa, with pressure derivatives of K{sub oT}' = 5.45{+-}0.73 and K{sub oT}' = 7.50{+-}0.86 for WC and WC-6%Co, respectively. The ultrasonic measurements, conducted up to 14 GPa, enabled the determination of the pressure dependences of both bulk and shear moduli. Using Eulerian finite strain equations to fit the ultrasonic data, we obtain for WC an ambient pressure adiabatic bulk modulus of K{sub os} = 383.8{+-}0.8 GPa, and K{sub os}' = 2.61{+-}0.07 for its pressure derivative, while values of G{sub os} = 304.0{+-}0.3 GPa and G{sub os}' = 1.50{+-}0.09 were determined for the shear modulus and its pressure derivative, respectively. Meanwhile, for WC-6%Co, we obtain K{sub os} = 357.5{+-}1.0 GPa, K{sub os}' = 5.18{+-}0.14, G{sub os} = 253.5{+-}0.3 GPa, and G{sub os}' = 1.09{+-}0.09. The equations of state derived from the ultrasonic data are in good agreement with extrapolated results reported previously by Day and Ruoff [J. Appl. Phys. 44, 2447 (1973)] and Gerlich and Kennedy [J. Appl. Phys. 50, 3331 (1978)] who carried out measurements up to 0.2 and 1.0 GPa, respectively.},
doi = {10.1063/1.2938024},
url = {https://www.osti.gov/biblio/1006718}, journal = {J. Appl. Phys.},
issn = {0021-8979},
number = 2008,
volume = 103,
place = {United States},
year = {Wed Jul 23 00:00:00 EDT 2008},
month = {Wed Jul 23 00:00:00 EDT 2008}
}