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Surfactant-free electroless codeposition of Ni–P–MoS2/Al2O3 composite coatings

Surfactant-free electroless codeposition of Ni–P–MoS2/Al2O3 composite coatings
Surfactant-free electroless codeposition of Ni–P–MoS2/Al2O3 composite coatings
This paper presents the influence of an inorganic Al2O3 layer over MoS2 particles on the tribological performance of electroless Ni–P–MoS2/Al2O3 composite coatings fabricated without using surfactants. The Al2O3-coated MoS2 particles were prepared by a heterogeneous nucleation process. The dry sliding tests of the composite coatings were tested against a WC ball. SEM was used to observe the surface morphology of particles, composite coatings, and worn surfaces. The results indicate that the coverage of an Al2O3 coating on MoS2 particles significantly affects the surface morphology, frictional coefficient and wear loss of the composite coatings. The incorporation of Al2O3-coated MoS2 particles with lower coverage (up to 7% of Al2O3) could obtain compact surface structure of composite coatings, which contribute to reduced wear loss. However, higher coverage would lead to loose surface structure of the composite coatings, and thus increase their wear loss.
2079-6412
Liu, Ping
15f3c7f6-963d-4b43-82b2-cedad3699910
Zhu, Yongwei
2101b32a-7e60-4d69-9771-ee3cfe1af91f
Zhong, Gaoyan
4122f394-9978-4435-874b-5e8356d19a31
Zhao, Xiao
70e12f26-5ece-46cd-a186-3cac70e99a6f
Wang, Shuncai
8a390e2d-6552-4c7c-a88f-25bf9d6986a6
Yang, Shoufeng
e0018adf-8123-4a54-b8dd-306c10ca48f1
Liu, Ping
15f3c7f6-963d-4b43-82b2-cedad3699910
Zhu, Yongwei
2101b32a-7e60-4d69-9771-ee3cfe1af91f
Zhong, Gaoyan
4122f394-9978-4435-874b-5e8356d19a31
Zhao, Xiao
70e12f26-5ece-46cd-a186-3cac70e99a6f
Wang, Shuncai
8a390e2d-6552-4c7c-a88f-25bf9d6986a6
Yang, Shoufeng
e0018adf-8123-4a54-b8dd-306c10ca48f1

Liu, Ping, Zhu, Yongwei, Zhong, Gaoyan, Zhao, Xiao, Wang, Shuncai and Yang, Shoufeng (2019) Surfactant-free electroless codeposition of Ni–P–MoS2/Al2O3 composite coatings. Coatings, 9 (2). (doi:10.3390/coatings9020116).

Record type: Article

Abstract

This paper presents the influence of an inorganic Al2O3 layer over MoS2 particles on the tribological performance of electroless Ni–P–MoS2/Al2O3 composite coatings fabricated without using surfactants. The Al2O3-coated MoS2 particles were prepared by a heterogeneous nucleation process. The dry sliding tests of the composite coatings were tested against a WC ball. SEM was used to observe the surface morphology of particles, composite coatings, and worn surfaces. The results indicate that the coverage of an Al2O3 coating on MoS2 particles significantly affects the surface morphology, frictional coefficient and wear loss of the composite coatings. The incorporation of Al2O3-coated MoS2 particles with lower coverage (up to 7% of Al2O3) could obtain compact surface structure of composite coatings, which contribute to reduced wear loss. However, higher coverage would lead to loose surface structure of the composite coatings, and thus increase their wear loss.

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Accepted/In Press date: 10 February 2019
Published date: 13 February 2019

Identifiers

Local EPrints ID: 429730
URI: https://eprints.soton.ac.uk/id/eprint/429730
ISSN: 2079-6412
PURE UUID: fa33fcc9-8ef9-4d2d-84cd-8cb79161da4e
ORCID for Xiao Zhao: ORCID iD orcid.org/0000-0002-9714-3176
ORCID for Shoufeng Yang: ORCID iD orcid.org/0000-0002-3888-3211

Catalogue record

Date deposited: 04 Apr 2019 16:30
Last modified: 19 Jun 2019 00:25

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