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Surface Engineering Volume 35, 2019 - Issue 11
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Research Article

Properties of GO/WC–Co coatings prepared via different pulverisation processes

Xinkun WangSchool of Materials Science and Engineering, Beijing University of Aeronautics & Astronautics, Beijing, People’s Republic of China;Beijing Aeronautical Engineering Research Center, Beijing, People’s Republic of ChinaCorrespondence[email protected]
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,
Haoliang TianAviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material, Beijing Institute of Aeronautical Materials, Beijing, People’s Republic of ChinaView further author information
,
Changliang WangAviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material, Beijing Institute of Aeronautical Materials, Beijing, People’s Republic of ChinaORCID Iconhttps://orcid.org/0000-0001-5643-1844View further author information
ORCID Icon,
Menqiu GuoAviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material, Beijing Institute of Aeronautical Materials, Beijing, People’s Republic of ChinaView further author information
,
Shicheng WeiNational Key Laboratory for Remanufacturing, Academy of Armored Forces Engineering, Beijing, People’s Republic of ChinaView further author information
&
Binshi XuNational Key Laboratory for Remanufacturing, Academy of Armored Forces Engineering, Beijing, People’s Republic of ChinaView further author information
Pages 933-946 | Received 01 Aug 2018, Accepted 26 Dec 2018, Published online: 06 Feb 2019
 
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ABSTRACT

Graphene-modified WC–Co self-lubricating (GO/WC–Co) coatings were prepared via different powder production processes. Compared with the wet ball milling, wet mixing, and sintering and crushing processes, the spray granulation process produces uniform and tight adhesion of the graphene on the surface of the WC–Co powder. The bonding strength and hardness of the resultant coating are approximately 70 MPa and 1000 HV0.3, respectively. Graphene modification causes a 40% reduction in the friction coefficient. During the friction process, the graphene constantly forms a lubricating film that serves as an excellent self-lubricating layer.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This study was financially supported by the National Natural Science Foundation of China [grant number 51605455].

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