Instant WS2 platelets reorientation of self-adaptive WS2/a-C tribocoating

被引：14

作者：

Cao, Huatang ^{[1
]}

Wen, Feng ^{[1
,2
]}

De Hosson, J. Th. M. ^{[3
]}

Pei, Y. T. ^{[1
]}

机构：

[1] Univ Groningen, Engn & Technol Inst Groningen, Dept Adv Prod Engn, Nijenborgh 4, NL-9747 AG Groningen, Netherlands

[2] Hainan Univ, Sch Mat & Chem Engn, Haikou 570228, Hainan, Peoples R China

[3] Univ Groningen, Zernike Inst Adv Mat, Dept Appl Phys, Nijenborgh 4, NL-9747 AG Groningen, Netherlands

来源：

MATERIALS LETTERS | 2018年 / 229卷

关键词：

WS2; Nanocomposites; Magnetron sputtering S; elf-adaptation; Reorientation; Self lubrication; THIN-FILMS; COATINGS;

D O I：

10.1016/j.matlet.2018.06.111

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

WS2/a-C nanocomposite coatings were deposited by magnetron co-sputtering using WS2 and graphite targets. The microstructure and triboperformance of the coatings were scrutinized via microscopy (AFM, SEM, FIB, HRTEM), spectroscopy (XRD, XPS) and tribometry. Atomic WS(2 )platelets are randomly embedded in an amorphous carbon matrix of the as-deposited nanocomposite coating. HRTEM observations of tribofilm/transfer layer reveal that the sliding contact immediately reorients WS2 platelets parallel to the sliding interface and thereby leads to self-adaptive "frictionless" response. The coefficient of friction falls to 0.02 in dry air and reaches 0.10 in humid air, and is reversible as testing atmosphere cycles between dry air and humid air. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：64 / 67

页数：4

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