Dual in-situ observation of tribochemical and morphological evolution of single-layer WS2 and multi-layer WS2/C coatings

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外文摘要：The outstanding tribological performance of transition metal dichalcogenides(TMDs)is attributed to their unique sandwich microstructure and low interlayer shear stress.This advantageous structure allows TMDs to demonstrate exceptional friction reduction properties.Furthermore,the incorporation of TMDs and amorphous carbon(a-C)in multi-layer structures shows excellent potential for further enhancing tribological and anti-oxidation properties.Amorphous carbon,known for its high ductility,chemical inertness,and excellent wear resistance,significantly contributes to the overall performance of these multi-layer coatings.To gain an in-depth understanding of the tribological mechanism and evolution of TMDs'multi-layer coatings,a dual in-situ analysis was carried out using a tribometer equipped with a 3D laser microscope and a Raman spectrometer.This innovative approach allowed for a comprehensive evolution of the tribological,topographical,and tribochemical characteristics of both single-layer WS2 and multi-layer WS2/C coatings in real time.The findings from the dual in-situ tribotest revealed distinct failure characteristics between the single-layer WS2 coating and the multi-layer WS2/C coating.The single-layer WS2 coating predominantly experienced failure due to mechanical removal,whereas a combination of mechanical removal and tribochemistry primarily influenced the failure of the multi-layer WS2/C coating.The tribological evolution process of these two coatings can be classified into four stages on the basis of their tribological behavior:the running-in stage,stable friction stage,re-deposition stage,and lubrication failure stage.Each stage represents a distinct phase in the tribological behavior of the coatings and contributes to our understanding of their behavior during sliding.

外文关键词：

In-situ analysismulti-layer coatingtribologytribochemistry

作者：

Yuzhen LIU、Jae-Ho HAN、Shusheng XU、Young Chan JUNG、Dae-Eun KIM

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作者单位：

State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou 730000,China

Department of Mechanical Engineering,Yonsei University,Seoul,03722,Republic of Korea

Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai,Yantai 264000,China

Yantai Zhongke Research Institute of Advanced Materials and Green Chemical Engineering,Yantai 264000,China

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基金：

fund of LICP Cooperation Foundation for Young ScholarsChina National Natural Science FoundationStrategic Priority Research Program of the Chinese Academy of SciencesNatural Science Foundation of Shandong ProvinceLICP International Cooperative ScholarshipNational Research Foundation of Korea(NRF)grant funded by the Korean government(MSIT)

项目编号：

HZJJ22-0352075521XDB0470102022HWYQ-0962020R1A2C2004714

出版年：

2024

DOI：

10.1007/s40544-023-0844-5

摩擦(英文)

CSTPCDEI

ISSN：2223-7690

年,卷(期)：2024.12(7)

参考文献量49