Synergetic lubrication between MoDTC and TiO2 nano-additive: Dynamic evolution of tribofilm induced by tribocatalysis and tribomechanical effect

Tribology International, Journal Year: 2025, Volume and Issue: unknown, P. 110608 - 110608

Published: Feb. 1, 2025

Language: Английский

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MoS2 Additives in Lithium Grease for Electrified Systems

Lubricants, Journal Year: 2025, Volume and Issue: 13(3), P. 106 - 106

Published: Feb. 28, 2025

This study investigates the effectiveness of micron- and nano-sized molybdenum disulfide (MoS2) particles as additives in lithium (Li) grease under electrified conditions. By systematically applying electric current high temperatures experimental parameters, we evaluated frictional wear performance formulations. Our results showed that micron MoS2 (M-MoS2) outperform their nano counterparts reducing friction range room temperature to 40 °C. Meanwhile, at 80 °C, (N-MoS2) provide better surface protection. The superior M-MoS2 is attributed particle size, which improves ability form a more stable robust lubricating film given electrical In terms wear, both MoS2-added greases substantial improvements, with 93% reduction °C an 85% applied 3 A current. Surface characterization revealed resulted smoother less severe pitting melted pools compared base grease. EDX analysis existence oxygen, molybdenum, sulfur M-MoS2, indicating presence stability on track. These findings suggest have great potential for improving efficiency durability lubricants electrically thermally demanding applications.

Language: Английский

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Covalent-Organic Framework Nanomaterials: Energy Band Engineering Generating Ultrathin Lubrication Films for Excellent Lubrication

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(37), P. 49993 - 50003

Published: Sept. 6, 2024

It is, in fact, inevitable for steel to be covered with a layer of iron oxides and/or peroxides on its surface. However, knowledge existence and functionality tribological behaviors is usually ignored. Herein, covalent-organic framework nanomaterials (CONs) composed three well-screened acceptors donor through the imide linkage were fabricated explore their lubrication performances. The results indicate that energy-level matching between CONs or leads formation Z-scheme heterojunction structure at rubbing interface. Also, friction produces an internal electric field heterojunction, which drives negative atomic/ionic species from sliding interface immigrate into pore resettle inside engender pinning effects, producing fixed layer. Synchronously, it also attracts free base oil form easy-shear assembling onto one, film two layered configurations. Finally, unique film, despite thickness dozen nanometers, still exhibits impressive reduction antiwear. This finding will inspire technology utilize intrinsic surface nature materials exploit lubricant additives modulate behaviors.

Language: Английский

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Efficient preparation of mechanical seal face reinforcement layer by composite anode jet electrodeposition

Journal of Materials Research and Technology, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 1, 2025

Language: Английский

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The Influence of Steel Pair Composition on the Tribological Behavior of DLC Films in Electrified Contact

Journal of Materials Engineering and Performance, Journal Year: 2025, Volume and Issue: unknown

Published: May 9, 2025

Language: Английский

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Sustainable Grease Lubrication Induced by Graphene Oxide and LiFePO₄

Advanced Engineering Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 29, 2024

This study investigates the possibility of modifying lubricating greases by 2D graphene oxide (GO) and lithium iron phosphate (LiFePO 4 ) to enhance their tribological performance. GO's layered structure plays a crucial role in reducing friction facilitating easy sliding between rubbing surfaces, making it an effective solid lubricant. The impact these additives on reduction, wear resistance, tribolayer formation ability is evaluated ball‐on‐disc tribometry with emphasis durability sustainability. Comparative results reveal that unmodified exhibit high susceptibility wear, including severe plastic deformation. In contrast, GO show notable reduction friction, while addition LiFePO contributes continuous protective layer substantially reduces abrasive wear. combination homogeneous, durable tribofilm effectively protects surfaces against providing long‐term stability. Although lab‐scale used, findings suggest great potential for extending useful life recycled from lithium‐ion batteries, similar commercial thus confirming significant improvements grease performance but also highlighting advance toward more sustainable solutions industrial applications electric vehicles.

Language: Английский

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Study on the current-carrying tribological properties of melamine-oleic acid hydrogen bond self-assembled conductive grease

Tribology International, Journal Year: 2024, Volume and Issue: unknown, P. 110497 - 110497

Published: Dec. 1, 2024

Language: Английский

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