Trends in the elastic response of binary early transition metal nitrides

Abstract

Motivated by an increasing demand for coherent data that can be used for selecting materials with properties tailored for specific application requirements, we studied elastic response of nine binary early transition metal nitrides (ScN, TiN, VN, YN, ZrN, NbN, LaN, HfN, and TaN) and AlN. In particular, single crystal elastic constants, Young's modulus in different crystallographic directions, polycrystalline values of shear and Young's moduli, and the elastic anisotropy factor were calculated. Additionally, we provide estimates of the third order elastic constants for the ten binary nitrides.Comment: 10 pages, 7 figure

Cross-sectional structure-property relationship in a graded nanocrystalline Ti1−xAlxN thin film

“…[45] is significantly higher than the experimentally found in-plane (Fig. 5) and out-of-plane moduli ( Table 1, region A).…”

Elastic constants, Poisson ratios, and the elastic anisotropy of VN(001), (011), and (111) epitaxial layers grown by reactive magnetron sputter deposition

“…12 Recently, alloys of VN with cubic MoN or WN were predicted to provide higher hardness and ductility (i.e., higher toughness) than VN; 14,15 a result which has been confirmed experimentally for VMoN alloys by Kindlund et al 16 Despite extensive engineering applications, studies of the VN elastic constants are scarce, with reported experimental elastic constants, obtained using acoustic microscopy, 17,18 and theoretical results based on density functional theory, 19,20 differing by up to $150 GPa ($30%). Here, we determine VN elastic constants using subpicosecond ultrasonic optical pump/probe measurements, carried out on single-crystal stoichiometric VN(001), VN(011), and VN(111) thin films.…”

The Atomistic Structure of Metal/Ceramic Interfaces Is the Key Issue for Developing Better Properties

“…This development shows the trend that functional materials demand more and more interface research, because possibilities for applications increase. Representative examples of present research on inorganic interfaces are thermal-barrier coatings (TBC) [27][28][29][30], hard TiN-coating [31][32][33][34][35], superconductors [36], and as functional components in microelectronics [37][38][39][40][41][42], transparent conducting oxides (TCO) [43][44][45][46], photovoltaic materials [47], thermo-electrics [48][49][50][51][52], ferroelectrics [53], magnetic materials or spintronics [54,55].…”