Self-healing of a pre-notched WS2/a-C coating

Autor:	Huatang Cao, Jeff Th.M. De Hosson, Yutao Pei
Jazyk:	angličtina
Rok vydání:	2019
Předmět:	Self-healing WS2 basal plane reorientation tribocoating HR-TEM Materials of engineering and construction. Mechanics of materials TA401-492
Zdroj:	Materials Research Letters, Vol 7, Iss 3, Pp 103-109 (2019)
Druh dokumentu:	article
ISSN:	2166-3831 21663831
DOI:	10.1080/21663831.2018.1561538
Popis:	This letter reports that a pre-notched WS2/a-C tribocoating surface can be fully healed through sliding. The healed notches act as superior lubricant micro-reservoirs affording frictionless responses leading to an ultralow coefficient of friction (0.02). HR-TEM observations reveal WS2 (002) platelets in the healed notch parallel to the outer coating surface and to the V-notch/coating interface. Direct evidence of the rearrangement of WS2 at the curved interface elucidates that basal plane reorientation does not occur necessarily parallel to the counterpart sliding direction as was taken for granted in literature. The patchy tribofilm provides a new avenue for self-healing efficiency in tribology.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/da28af29401d41599f6b29ec4ba234a8 Zobrazit plný text záznamu View record in DOAJ