Publications in Scientific Journals:
H. Riedl, T. Glechner, T. Wojcik, N. Koutná, S. Kolozsvári, V. Paneta, D. Holec, D. Primetzhofer, P.H. Mayrhofer:
"Influence of carbon deficiency on phase formation and thermal stability of super-hard TaCy thin films";
Scripta Materialia,
149
(2018),
149;
150
- 154.
English abstract:
Abstract Using nonreactive sputter deposition allows the preparation of single-phase fcc structured TaCy thin films over a wide compositional range with y between 0.63 and 1.04. Among this composition range, the C-deficient TaC0.78 exhibits the highest as deposited hardness of 43.4 ± 0.65 GPa combined with the highest thermal stability. Even after vacuum annealing to 2400 °C, no vacancy-ordered or faulted Ta-C based phases can be detected. The stabilization of carbon deficient fcc structured TaCy near y of about 0.75, revealed the decisive character of vacancy engineered thin films materials for ultra-high temperature applications.
Keywords:
Ta-C; Thin films; Carbon vacancies; UHTC; Density Functional Theory (DFT)
"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)
http://dx.doi.org/10.1016/j.scriptamat.2018.02.030
Created from the Publication Database of the Vienna University of Technology.