Effects of chemical composition and morphological structure of surface oxides on the antifrictional properties of medium carbon steel

Gao, Jian; Zhao, S. Y.; Liu, Xiaoyi

doi:10.1016/0043-1648(91)90187-y

Cited by 8 publications

(2 citation statements)

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“…Research efforts have been dedicated to identify structures of the tribofilms formed on steel surfaces rubbed with NAO brake materials, and it has been demonstrated that the tribofilms mainly consist of iron oxide crystals. 18,19 Polymer self-lubrication composites have been increasingly utilized as sliding bearings, bushings, and seals owing to their self-lubrication characteristics. 20−23 Reinforcing fibers and solid lubricants are often added into the polymer matrix for formulating high-performance self-lubrication composites.…”

Section: Introductionmentioning

confidence: 99%

“…There is no general consensus yet on underlying mechanisms determining the high friction of NAO brake materials. , Nevertheless, it has been recognized that generation of a stable tribofilm on the steel counterface is important for getting a high and steady friction coefficient. , The tribofilm is usually very thin, and it is hard to characterize its nanostructure without tedious and expensive sample preparations. Research efforts have been dedicated to identify structures of the tribofilms formed on steel surfaces rubbed with NAO brake materials, and it has been demonstrated that the tribofilms mainly consist of iron oxide crystals. , …”

Section: Introductionmentioning

confidence: 99%

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Switching Brake Materials To Extremely Wear-Resistant Self-Lubrication Materials via Tuning Interface Nanostructures

Che

Zhang

et al. 2018

ACS Appl. Mater. Interfaces

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Tribological performance of motion components is one of the key aspects that must be considered in a wide range of applications such as vehicles, aircrafts, and manufacturing equipment. This work demonstrates that further addition of only low-loading hard nanoparticles into a formulated nonasbestos organic brake material directly switches its functionality to a self-lubrication material. More importantly, the newly developed nanocomposites exhibit an extremely low wear rate. Comprehensive investigations on the friction interface reveal that the great friction and wear reduction are due to the formation of a nanostructured lubricious tribofilm. Tribofilm formation is continuously fed by complex molecular species released from the bulk nanocomposites, for which nanoparticles digested within the tribofilm greatly enhance its robustness and lubricity. This work gains insight into the crucial role of the interface nanostructure and paves a route for developing extremely wear-resistant self-lubrication composites for numerous applications.

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Section: Introductionmentioning

confidence: 99%