Effect of multi-doping on the tribological behavior of MoN (Ag)-based films in a wide temperature range

Wu, Gang; Song, Fulei; Shi, Yanchao; Yu, Bo; Pu, Jibin; Wang, Yonxin

doi:10.1007/s10853-023-08283-z

Cited by 3 publications

(1 citation statement)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, the sintering process of nanocrystals is an interesting and essential topic for assessing the stability of colloidal nanocrystals. The relevant knowledge can help us develop methods to prevent sintering, thereby enhancing the stability of nanocrystals [11,12].…”

Section: Introductionmentioning

confidence: 99%

In Situ Sintering of CdSe/CdS Nanocrystals under Electron Beam Irradiation

Tang,

Zhang,

Liao

et al. 2023

Nanomaterials

View full text Add to dashboard Cite

Colloidal semiconductor nanocrystals have attracted widespread attention due to their tremendous electrical and optical properties. Nanoparticles exhibit a strong tendency to aggregate and sinter in a short period of time during processing or use due to their large surface area-to-volume ratio, which may lead to significant changes in their required performance. Therefore, it is of great significance to conduct in-depth research on the sintering process and mechanism of nanoparticles to maintain their stability. Here, the sintering process of CdSe/CdS core/shell nanocrystals under continuous electron beam irradiation was studied using in situ transmission electron microscopy (TEM). In the early stages of sintering, CdSe/CdS nanocrystals approached each other at a distance of approximately 1–2 nm. As the exposure time to the electron beam increased, the movement of surface atoms on the nanocrystals led to contact between them. Subsequently, the atoms on the contact surfaces underwent rapid motion, resulting in the rapid formation of the neck between the particles. The neck formation between adjacent particles provides strong evidence of a sintering mechanism dominated by surface atom diffusion rather than Ostwald ripening. Further research in this area could lead to the development of improved methods to prevent sintering and enhance the stability of nanocrystals, ultimately contributing to the advancement of nanomaterial-based devices and materials with long-lasting performance.

show abstract

Section: Introductionmentioning

confidence: 99%

In Situ Sintering of CdSe/CdS Nanocrystals under Electron Beam Irradiation

Tang,

Zhang,

Liao

et al. 2023

Nanomaterials

View full text Add to dashboard Cite

show abstract

Tribological Properties of MoN (Ag‐W)‐MoS₂ (W) Multilayer Films in Wide Temperature Range

Wu,

Song,

Xie

et al. 2024

Adv Eng Mater

View full text Add to dashboard Cite

In nitride films, an enhanced lubrication effect has been achieved through the incorporation of a soft metal element such as Ag. However, at medium and high temperatures, the favorable tribological properties cannot be sustained for an extended period due to the rapid depletion of Ag. To address this issue, a multilayer film design with W element doping is conceived to impede Ag depletion. MoN (Ag‐W)‐MoS2 (W) multilayer films with 4 different layers are prepared, and their tribological properties are systematically characterized across temperatures ranging from 25 to 800 °C. The results indicate that the tribological properties of four different multilayer films vary considerably at different temperatures. The 8‐layer multilayer film exhibits a relatively low friction coefficient that can be maintained at wide‐range temperatures. X‐ray diffractometer patterns are obtained before and after the friction test to elucidate the lubrication phases of different layers within the multilayer films at various temperatures. Additionally, 3D profiles of wear trajectory surfaces are generated, revealing enhanced wear resistance achieved by effectively inhibiting the migration of Ag. The low friction coefficient in multilayer films can be attributed to the oxidation of MoS2 and the generation of new lubrication phases, as confirmed by Raman spectra analysis.

show abstract

Design and magnetron sputtering of nanomultilayered W2N/Ag-SiNx films: Microstructural insights and optimized self-lubricant properties from room temperature to 500 °C

Luan,

Kong,

Evaristo

et al. 2024

Ceramics International

View full text Add to dashboard Cite

Effect of multi-doping on the tribological behavior of MoN (Ag)-based films in a wide temperature range

Cited by 3 publications

References 35 publications

In Situ Sintering of CdSe/CdS Nanocrystals under Electron Beam Irradiation

In Situ Sintering of CdSe/CdS Nanocrystals under Electron Beam Irradiation

Tribological Properties of MoN (Ag‐W)‐MoS₂ (W) Multilayer Films in Wide Temperature Range

Design and magnetron sputtering of nanomultilayered W2N/Ag-SiNx films: Microstructural insights and optimized self-lubricant properties from room temperature to 500 °C

Contact Info

Product

Resources

About

Effect of multi-doping on the tribological behavior of MoN (Ag)-based films in a wide temperature range

Cited by 3 publications

References 35 publications

In Situ Sintering of CdSe/CdS Nanocrystals under Electron Beam Irradiation

In Situ Sintering of CdSe/CdS Nanocrystals under Electron Beam Irradiation

Tribological Properties of MoN (Ag‐W)‐MoS2 (W) Multilayer Films in Wide Temperature Range

Design and magnetron sputtering of nanomultilayered W2N/Ag-SiNx films: Microstructural insights and optimized self-lubricant properties from room temperature to 500 °C

Contact Info

Product

Resources

About

Tribological Properties of MoN (Ag‐W)‐MoS₂ (W) Multilayer Films in Wide Temperature Range