Matches in SemOpenAlex for { <https://semopenalex.org/work/W2955668468> ?p ?o ?g. }
- W2955668468 endingPage "137403" @default.
- W2955668468 startingPage "137403" @default.
- W2955668468 abstract "We comparatively study the elastic properties of the two existing polytypes of tantalum, α-Ta (ground state bcc structure) and β-Ta (metastable tetragonal structure), using density functional theory (DFT) calculations and thin film growth experiments. The lattice parameter and the single-crystal elastic constants cij for the two allotropic structures were computed using pseudo-potentials with generalized gradient approximation. Sound velocity measurements on single-phase, highly-textured (001) β-Ta and (110) α-Ta films deposited by magnetron sputtering were carried out using picosecond laser ultrasonic and Brillouin light scattering techniques, while hardness H and Young's modulus E were measured using nanoindentation. We found that the β-Ta phase is significantly harder (H~18.0 GPa) than α-Ta (H~10.3 GPa), while their elastic stiffness properties and Cauchy pressure p are similar, C33~285–310 GPa, E~ 188 GPa, p ~ 70–80 GPa, and agree well with the computed values. However, the out-of-plane shear modulus G of the β-Ta film is softer by 28% with respect to that of α-Ta film and DFT values (50 vs. 69 GPa). The present findings reveal that, contrarily to common claims, the β-Ta phase is not at all brittle but elastically and plastically deforms in a compliant way. Its toughness and elastic strain to failure ability is further comprehended from low G/B (0.205) and high H/E (≈0.1) ratios and the absence of radial cracks around indents, which suggests that β-Ta is also a suitable phase for use as wear-resistant coating in biomedical applications." @default.
- W2955668468 created "2019-07-12" @default.
- W2955668468 creator A5014177753 @default.
- W2955668468 creator A5017815987 @default.
- W2955668468 creator A5057379922 @default.
- W2955668468 creator A5061270622 @default.
- W2955668468 creator A5073206499 @default.
- W2955668468 creator A5088796695 @default.
- W2955668468 date "2019-10-01" @default.
- W2955668468 modified "2023-10-17" @default.
- W2955668468 title "Elastic properties of α- and β-tantalum thin films" @default.
- W2955668468 cites W1640790168 @default.
- W2955668468 cites W1967390818 @default.
- W2955668468 cites W1971850273 @default.
- W2955668468 cites W1973227118 @default.
- W2955668468 cites W1979544533 @default.
- W2955668468 cites W1981368803 @default.
- W2955668468 cites W1981479961 @default.
- W2955668468 cites W1981606343 @default.
- W2955668468 cites W1981855038 @default.
- W2955668468 cites W1982386294 @default.
- W2955668468 cites W1982737631 @default.
- W2955668468 cites W1988913982 @default.
- W2955668468 cites W1989715896 @default.
- W2955668468 cites W1991469020 @default.
- W2955668468 cites W1993771762 @default.
- W2955668468 cites W1993952648 @default.
- W2955668468 cites W1994070158 @default.
- W2955668468 cites W1997426749 @default.
- W2955668468 cites W1998437576 @default.
- W2955668468 cites W2001290447 @default.
- W2955668468 cites W2004599623 @default.
- W2955668468 cites W2005131927 @default.
- W2955668468 cites W2008182092 @default.
- W2955668468 cites W2017999219 @default.
- W2955668468 cites W2019403835 @default.
- W2955668468 cites W2020297340 @default.
- W2955668468 cites W2021564212 @default.
- W2955668468 cites W2030049731 @default.
- W2955668468 cites W2035253779 @default.
- W2955668468 cites W2037203029 @default.
- W2955668468 cites W2040432202 @default.
- W2955668468 cites W2041064282 @default.
- W2955668468 cites W2044920887 @default.
- W2955668468 cites W2047205370 @default.
- W2955668468 cites W2051166244 @default.
- W2955668468 cites W2052311347 @default.
- W2955668468 cites W2055344453 @default.
- W2955668468 cites W2057136689 @default.
- W2955668468 cites W2062666829 @default.
- W2955668468 cites W2065354170 @default.
- W2955668468 cites W2065451291 @default.
- W2955668468 cites W2065458445 @default.
- W2955668468 cites W2072402565 @default.
- W2955668468 cites W2073369104 @default.
- W2955668468 cites W2073531811 @default.
- W2955668468 cites W2077150921 @default.
- W2955668468 cites W2079841645 @default.
- W2955668468 cites W2083222334 @default.
- W2955668468 cites W2083306419 @default.
- W2955668468 cites W2083424710 @default.
- W2955668468 cites W2086529087 @default.
- W2955668468 cites W2086534873 @default.
- W2955668468 cites W2086690688 @default.
- W2955668468 cites W2088925839 @default.
- W2955668468 cites W2092291507 @default.
- W2955668468 cites W2092306949 @default.
- W2955668468 cites W2094309667 @default.
- W2955668468 cites W2119932727 @default.
- W2955668468 cites W2126005297 @default.
- W2955668468 cites W2126345144 @default.
- W2955668468 cites W2142367714 @default.
- W2955668468 cites W2170689963 @default.
- W2955668468 cites W2171475407 @default.
- W2955668468 cites W2259367589 @default.
- W2955668468 cites W2281307282 @default.
- W2955668468 cites W2328934895 @default.
- W2955668468 cites W2573840586 @default.
- W2955668468 cites W2761162020 @default.
- W2955668468 cites W2769453811 @default.
- W2955668468 cites W2790152912 @default.
- W2955668468 cites W2793066525 @default.
- W2955668468 cites W2893439535 @default.
- W2955668468 cites W2904298098 @default.
- W2955668468 doi "https://doi.org/10.1016/j.tsf.2019.06.053" @default.
- W2955668468 hasPublicationYear "2019" @default.
- W2955668468 type Work @default.
- W2955668468 sameAs 2955668468 @default.
- W2955668468 citedByCount "15" @default.
- W2955668468 countsByYear W29556684682020 @default.
- W2955668468 countsByYear W29556684682021 @default.
- W2955668468 countsByYear W29556684682022 @default.
- W2955668468 countsByYear W29556684682023 @default.
- W2955668468 crossrefType "journal-article" @default.
- W2955668468 hasAuthorship W2955668468A5014177753 @default.
- W2955668468 hasAuthorship W2955668468A5017815987 @default.
- W2955668468 hasAuthorship W2955668468A5057379922 @default.
- W2955668468 hasAuthorship W2955668468A5061270622 @default.