Effect of Interface Ni and Ti Films on Antifriction Properties of Nanolayer Thin-Film WS2/g-C Coatings

Article Nanoscience & Nanotechnology

Temperature-Adaptive Ultralubricity of a WS2/a-C Nanocomposite Coating: Performance from Room Temperature up to 500 °C

Huatang Cao et al.

Summary: This study reports on the ultralubricity of a high-temperature resilient nanocomposite WS2/a-C tribocoating, which maintains a coefficient of friction of around 0.02 up to approximately 500 degrees C and shows a similar ultralubricity even after annealing at 450 degrees C and cooling back down to room temperature, indicating a tribological self-adaptation over a broad temperature range. High-resolution TEM observations reveal the formation of WS2 nanoplatelets dynamically and their contribution to sustainable ultralubricity, while the declining triboperformance beyond 500 degrees C is linked to sulfur loss rather than the earlier suggested transformation into inferior WO3 via oxidation. This self-adaptive WS2/a-C tribocoating shows promise for constant ultralubrication with excellent thermal performance.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Effect of Interface Ni and Ti Films on Antifriction Properties of Nanolayer Thin-Film WS2/g-C Coatings

Related references

Temperature-Adaptive Ultralubricity of a WS2/a-C Nanocomposite Coating: Performance from Room Temperature up to 500 °C

Reactive Pulsed Laser Deposition of Clustered-Type MoSx (x ∼ 2, 3, and 4) Films and Their Solid Lubricant Properties at Low Temperature

Superlubricity of metal -metal interface enabled by graphene and MoWS 4 nanosheets

Specific Features of Reactive Pulsed Laser Deposition of Solid Lubricating Nanocomposite Mo-S-C-H Thin-Film Coatings

Nickel mediated few-layer graphene growth on glass substrates by pulsed laser deposition

Operando tribochemical formation of onion-like-carbon leads to macroscale superlubricity

Hierarchical structure graphitic-like/MoS2 film as superlubricity material

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