Self-healing WS2 tribofilms: An in-situ appraisal of mechanisms

被引：10
作者：
Cao, Huatang [1 ]
Bai, Mingwen [2 ,5 ]
Inkson, Beverley J. [2 ]
Zhong, Xiangli [1 ]
De Hosson, Jeff Th M. [3 ]
Pei, Yutao [4 ]
Xiao, Ping [1 ]
机构：
[1] Univ Manchester, Henry Royce Inst, Dept Mat, Manchester M13 9PL, Lancs, England
[2] Univ Sheffield, Dept Mat Sci & Engn, Sheffield S1 3JD, S Yorkshire, England
[3] Univ Groningen, Zernike Inst Adv Mat, NL-9747 AG Groningen, Netherlands
[4] Univ Groningen, Engn & Technol Inst Groningen, NL-9747 AG Groningen, Netherlands
[5] Coventry Univ, Inst Future Transport & Cities, Coventry CV1 5FB, W Midlands, England
来源：
SCRIPTA MATERIALIA | 2021年 / 204卷
基金：
英国工程与自然科学研究理事会;
关键词：
In-situ Microscopy; Self-healing; WS2 atomic arrangement; Intelligent coating; Tribology; TRIBOPERFORMANCE; NANOCOMPOSITE;
D O I：
10.1016/j.scriptamat.2021.114124
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Self-healing tribocoatings are being developed for aerospace applications to improve the lifetime and reduce the surface maintenance of components in motion. Here the tribo-induced self-healing behaviour of a WS2/a-C tribocoating has been evaluated for the first time by in-situ scanning electron microscopy (SEM) to evaluate the mechanisms of damage and self-recovery. In-situ SEM imaging reveals that scratch damage results in coating brittle fracture and spalling, and that Hertzian pressure affects healing rate at early stages of sliding. WS2 nanocrystallites, formed via atomic rearrangement at flexural interfaces, enable the healing of irregular damages and congruently offer superlubrication in vacuum. Such damage control in tribo-service may make flawless coatings an unnecessary prerequisite in tribo-applications. (C) 2021 The Author(s). Published by Elsevier Ltd on behalf of Acta Materialia Inc.
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页数：5
相关论文
共 12 条
[1]   Temperature-Adaptive Ultralubricity of a WS2/a-C Nanocomposite Coating: Performance from Room Temperature up to 500 °C [J].
Cao, Huatang ;
Momand, Jamo ;
Syari'ati, Ali ;
Wen, Feng ;
Rudolf, Petra ;
Xiao, Ping ;
De Hosson, Jeff Th M. ;
Pei, Yutao .
ACS APPLIED MATERIALS & INTERFACES, 2021, 13 (24) :28843-28854
[2]   On the S/W stoichiometry and triboperformance of WSxC(H) coatings deposited by magnetron sputtering [J].
Cao, Huatang ;
Wen, Feng ;
Kumar, Sumit ;
Rudolf, Petra ;
De Hosson, Jeff Th. M. ;
Pei, Yutao .
SURFACE & COATINGS TECHNOLOGY, 2019, 365 :41-51
[3]   Self-healing of a pre-notched WS2/a-C coating [J].
Cao, Huatang ;
De Hosson, Jeff Th M. ;
Pei, Yutao .
MATERIALS RESEARCH LETTERS, 2019, 7 (03) :103-109
[4]   Effect of carbon concentration and argon flow rate on the microstructure and triboperformance of magnetron sputtered WS2/a-C coatings [J].
Cao, Huatang ;
De Hosson, Jeff Th. M. ;
Pei, Yutao .
SURFACE & COATINGS TECHNOLOGY, 2017, 332 :142-152
[5]   Intelligent lubricating materials: A review [J].
Gong, Hanjun ;
Yu, Chengcheng ;
Zhang, Lin ;
Xie, Guoxin ;
Guo, Dan ;
Luo, Jianbin .
COMPOSITES PART B-ENGINEERING, 2020, 202
[6]   Diverse mechanisms of friction induced self-organisation into a low-friction material - An overview of WS2 tribofilm formation [J].
Gustavsson, F. ;
Jacobson, S. .
TRIBOLOGY INTERNATIONAL, 2016, 101 :340-347
[7]   Self-Healing Materials [J].
Hager, Martin D. ;
Greil, Peter ;
Leyens, Christoph ;
van der Zwaag, Sybrand ;
Schubert, Ulrich S. .
ADVANCED MATERIALS, 2010, 22 (47) :5424-5430
[8]   Amorphous W-S-N thin films: The atomic structure behind ultra-low friction [J].
Isaeva, Leyla ;
Sundberg, Jill ;
Mukherjee, Soham ;
Pelliccione, Christopher J. ;
Lindblad, Andreas ;
Segre, Carlo U. ;
Jansson, Ulf ;
Sarma, D. D. ;
Eriksson, Olle ;
Kadas, Krisztina .
ACTA MATERIALIA, 2015, 82 :84-93
[9]   The evolving quality of frictional contact with graphene [J].
Li, Suzhi ;
Li, Qunyang ;
Carpick, Robert W. ;
Gumbsch, Peter ;
Liu, Xin Z. ;
Ding, Xiangdong ;
Sun, Jun ;
Li, Ju .
NATURE, 2016, 539 (7630) :541-+
[10]   Self-Lubricating W-S-C Nanocomposite Coatings [J].
Polcar, Tomas ;
Evaristo, Manuel ;
Cavaleiro, Albano .
PLASMA PROCESSES AND POLYMERS, 2009, 6 (6-7) :417-424
12