Elastic and thermodynamic properties of vanadium nitride under pressure and the effect of metallic bonding on its hardness

Abstract

Elastic and thermodynamic properties of VN under pressure and effect of metallic bonding on its hardness * Pu Chunying(濮春英) a)+ , Zhou Dawei(周大伟) a) , Bao daixiao(包代小) b) , Lu Cheng (卢成) a) , Jin Xilian (靳希联) c) , Su Taichao (宿太超) d) , Zhang Feiwu (张飞武) e) ,

First-principles calculations of the phase stability and the elastic and mechanical properties of η-phases in the WC–Co system

“…The cohesive energies of WC and W 2 C-ε are lower than those of the other η-phases, indicating that they are the most stable phases. In addition, we examined the mechanical stability of WC and the η-phases [20,24,26,29,30].…”

Investigating the effect of nitrogen on the structural and tribo-mechanical behavior of vanadium nitride thin films deposited using R.F. magnetron sputtering

“…The calibration was done using the line of C1s of about 284.5 eV and a full width at halfmaximum (FWHM) of 1.1 eV, which was absorbed on the sample surface [24]. In the XPS analysis, C1s has made a spectacular referencing due to the fact that thin C contamination layers, in the form of socalled adventitious carbon are present on all surfaces that have been previously exposed to the atmosphere [4,24]. Hence, calibrating the XPS scale to the C1s peak set at 284.5 eV is justified and may lead to physical results, like a zero density of states at the Fermi level especially for conducting samples such as metals, where charging effects can definitely be excluded [24].The V2p, O1 and N1s spectra were obtained by Casa XPS software analysis [25].…”

“…The hard phases corresponding to transition metal nitrides are capable of retaining their mechanical properties such as strength and hardness under extreme conditions, because of which, they have been receiving considerable attention in the recent past [1][2][3]. Vanadium nitride (VN) is one such transition metal nitride, which has found its way in a wide variety of applications in many industrial fields, owing to their excellent properties such as high hardness and wear resistance, good electrical and thermal conductivity [4,5], good catalytic activity, and excellent thermal stability [6][7][8].,. VN particularly in the form of thin film is extensively used in industrial devices requiring high performance, corrosion resistance and improved abrasion resistance in microelectronics, superconductors and sometimes as decorative coatings.…”

Simultaneous reconstruction of temperature distribution and radiative properties in participating media using a hybrid LSQR–PSO algorithm

“…As an efficient, simple parallel search algorithm, the PSO algorithm has been widely applied in all kinds of optimization problems in recent years. [39][40][41][42][43][44][45] Each particle in the PSO algorithm denotes a solution candidate in the search space. It can adjust the flight path according to its own flight experience and its companions' experience.…”