不同形态的纳米级 MSH 对磷酸盐/MoS2 键合固体润滑涂层摩擦学性能的强化机制

IF 6.3 1区 工程技术 Q1 ENGINEERING, MECHANICAL Friction Pub Date : 2024-08-29 DOI:10.1007/s40544-024-0899-y
Zhengchao Xi, Jianbo Sun, Lei Chen, Haixia Cui, Yanjun Ma, Huidi Zhou, Jianmin Chen
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引用次数: 0

摘要

为了提高磷酸盐/MoS2 复合涂层的摩擦学性能,分别加入了粒状、片状和管状硅酸镁氢氧化物(MSH)。由于与磨损表面的有效相互作用以及与固体润滑剂的摩擦协同作用,纳米片状 MSH 表现出卓越的摩擦学性能。掺入纳米无机盐 MSH 后,复合涂层的摩擦系数降低了约 34.7%,复合涂层的抗磨损性能提高了约 13 倍。纳米晶体糖 MSH 促进了摩擦引起的多层异质滑动结构的形成,在摩擦界面上形成了分层的固体润滑剂。此外,纳米雾状 MSH 与磨损表面之间的三化学反应促进了金属陶瓷支撑膜的原位形成,这也促使在磨损表面顶部逐渐原位形成润滑膜。因此,摩擦过程中三元对之间的接触状态得到了及时调节,纳米复合材料滑动结构的失效也得到了有效抑制。因此,磷酸盐复合涂层的使用寿命显著延长,磨损表面的进一步磨损也明显减少。
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Strengthening mechanism of different morphologies of nano-sized MSH on tribological performance of phosphate/MoS2 bonded solid lubricating coatings

Magnesium silicate hydroxides (MSHs) with granular, schistose, and tubular morphologies were separately incorporated to enhance the tribological properties of phosphate/MoS2 composite coatings. The nano-schistose MSH demonstrated superior tribological performance due to its effective interactions with the worn surface and frictional synergies with solid lubricants. Incorporation of nano-schistose MSH decreased the friction coefficient of composite coatings by about 34.7% and increased the anti-wear performance of composite coatings by about thirteen times. Nano-schistose MSH facilitated the formation of a friction-induced multi-layer heterogenous slipping structure with layered solid lubricants at the friction interface. Moreover, tribo-chemical reactions between nano-schistose MSH and worn surface promoted the in-situ formation of a cermet supporting film, and this also induced the gradual in-situ formation of a lubrication film on the top of worn surface. Consequently, the contact state between tribo-pairs was timely regulated and the invalidation of the nanocomposite slipping structure was effectively restrained during the friction process. As a result, the service life of the phosphate composite coatings was significantly extended and further abrasion on the worn surface was notably reduced.

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来源期刊
Friction
Friction Engineering-Mechanical Engineering
CiteScore
12.90
自引率
13.20%
发文量
324
审稿时长
13 weeks
期刊介绍: Friction is a peer-reviewed international journal for the publication of theoretical and experimental research works related to the friction, lubrication and wear. Original, high quality research papers and review articles on all aspects of tribology are welcome, including, but are not limited to, a variety of topics, such as: Friction: Origin of friction, Friction theories, New phenomena of friction, Nano-friction, Ultra-low friction, Molecular friction, Ultra-high friction, Friction at high speed, Friction at high temperature or low temperature, Friction at solid/liquid interfaces, Bio-friction, Adhesion, etc. Lubrication: Superlubricity, Green lubricants, Nano-lubrication, Boundary lubrication, Thin film lubrication, Elastohydrodynamic lubrication, Mixed lubrication, New lubricants, New additives, Gas lubrication, Solid lubrication, etc. Wear: Wear materials, Wear mechanism, Wear models, Wear in severe conditions, Wear measurement, Wear monitoring, etc. Surface Engineering: Surface texturing, Molecular films, Surface coatings, Surface modification, Bionic surfaces, etc. Basic Sciences: Tribology system, Principles of tribology, Thermodynamics of tribo-systems, Micro-fluidics, Thermal stability of tribo-systems, etc. Friction is an open access journal. It is published quarterly by Tsinghua University Press and Springer, and sponsored by the State Key Laboratory of Tribology (TsinghuaUniversity) and the Tribology Institute of Chinese Mechanical Engineering Society.
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