Effect of bond population on the elasticity of tungsten nanowires: Ab initio calculation

Chibisova, M. A.; Chibisov, A. N.; Карпович, Н. Ф.

doi:10.1016/j.commatsci.2015.12.013

Cited by 4 publications

(1 citation statement)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The bond population is used to characterize the nature of interatomic bonding. The larger the absolute value of the bond population, the more the electron clouds overlap with each other, resulting in a stronger bonding ability and a more stable chemical bond being formed [23]. Table 6 shows the range of the bond population corresponding to each valence bond in the AgNi interfacial model before and after doping, as well as the average values obtained through simulation.…”

Section: Interface Bonding Characterizationmentioning

confidence: 99%

Effect of Nb Doping on the Electrical Contact Properties of AgNi Contact Materials

Wang,

Chen

et al. 2024

Coatings

View full text Add to dashboard Cite

AgNi contact materials have received widespread attention with the acceleration of the process of replacing AgCdO contact materials. However, the practical applications of AgNi contact materials are limited due to its disadvantage of poor resistance to melting welding. Firstly, following the first principles of the density functional theory, we simulated and tested an interfacial model of AgNi doped with varying amounts of Nb. Next, we fabricated AgNi electrical contact materials. Subsequently, we conducted electrical contact tests. Finally, the impact of Nb doping on the arc erosion behavior of AgNi electrical contact materials was analyzed. The results indicate that, with an increase in Nb doping content, the electrical contact performance and the degree of arc erosion exhibit a trend of initially decreasing and then increasing, which aligns with the simulation results. The mean values of arc energy, arc duration, and welding force for the material doped with 4.55% Nb were 181.02 mJ, 9.43 mS, and 38.45 cN, respectively. Moreover, the anode is more responsive to changes in Nb content compared to the cathode. The introduction of Nb enhances the viscosity of the molten pool in the AgNi electrical contact. Furthermore, the mechanisms of grain boundary strengthening and solid solution strengthening by Nb improve the weld performance resistance of the contact.

show abstract

Section: Interface Bonding Characterizationmentioning

confidence: 99%

Effect of Nb Doping on the Electrical Contact Properties of AgNi Contact Materials

Wang,

Chen

et al. 2024

Coatings

View full text Add to dashboard Cite

show abstract

On‐Demand Preparation of α‐Phase‐Dominated Tungsten Films for Highly Qualified Thermal Reflectors

Wang

Zang

Gao

et al. 2019

Adv Materials Inter

View full text Add to dashboard Cite

Phase‐structure diversity affords tungsten thin films with fascinating physical/chemical properties for varied applications. However, the on‐demand preparation of W films with specific phase is still an important but unmet scientific issue. In this report, an easy‐to‐achieve preparation recipe is implemented for addressing the phase tailoring of tungsten films. The phase transformation evolution during deposition is governed by enhanced diffusion of W adatoms and selective atomic etching on the crystal planes. It is experimentally demonstrated that the orientation relation between {210}β and {110}α planes plays a vital role in coupling with the competitive growth behaviors between β‐ and α‐W. The phase‐dependent electrical/optical properties of W films are experimentally observed and unambiguously figured out by theoretical simulations. Alpha‐phase‐dominated W films are prepared successfully under relatively tolerant conditions, demonstrating a low resistivity of ≈13.6 µΩ cm and a high infrared reflectance larger than 93%. Alpha‐W also serves as thermal reflector to construct a solar absorber, exhibiting a low thermal emissivity of ≈9.8%@500 °C. Understanding the (α, β) phase transformation mechanism means a big step forward in the development of the on‐demand preparation, which allows to build a scalable platform for making W films with specific phase in a more controllable way.

show abstract

Simulation Calculation and Experimental Study on the Properties of Re-, In-, and Nb-Doped Ag/Ni Electrical Contact Materials

Wang,

Zhang

2024

IEEE Trans. Compon., Packag. Manufact. Technol.

View full text Add to dashboard Cite

Effect of bond population on the elasticity of tungsten nanowires: Ab initio calculation

Cited by 4 publications

References 9 publications

Effect of Nb Doping on the Electrical Contact Properties of AgNi Contact Materials

Effect of Nb Doping on the Electrical Contact Properties of AgNi Contact Materials

On‐Demand Preparation of α‐Phase‐Dominated Tungsten Films for Highly Qualified Thermal Reflectors

Simulation Calculation and Experimental Study on the Properties of Re-, In-, and Nb-Doped Ag/Ni Electrical Contact Materials

Contact Info

Product

Resources

About