Mohanty, Shalini ORCID: https://orcid.org/0000-0002-0424-792X, Jamal, Naghma, Das, Alok Kumar and Prashanth, Konda Gokuldoss (2022) Electroless Ni-P-MoS2-Al2O3 composite coating with hard and self-lubricating properties. Materials, 15 (19):6806. ISSN 1996-1944 (doi:10.3390/ma15196806)

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Abstract

The work aimed to produce Ni-P-MoS2-Al2O3 on Al-7075 alloys with multiple attributes through an electroless (EL) plating route. The effects of additives (MoS2 and Al2O3) in the EL bath on the surface morphology, topography, hardness, composition (phase and elemental), roughness, wettability, and coating thickness were evaluated. Results indicate a substantial enhancement in microhardness of the EL-coated surfaces by 70% (maximum hardness = ~316 HV) using powders, and 30% (244 HV) without powders. The maximum coating thickness and water contact angle obtained with powders were 6.16 μm and 100.46°, respectively. The coefficient of friction for the samples prepared using powders was 0.12, and for the base material it was 0.18. The compositional analysis through EDS and XRD suggested the incorporation of a hard and lubricious layer on the EL-coated surface owing to the presence of different phases of Al, Mo, P, Zn, O, and S. Therefore, the resulting coating surfaces impart hardness, self-lubrication, hydrophobicity, and wear resistance simultaneously.

Item Type:	Article
Additional Information:	This article belongs to the Special Issue Recent Trends in Powder Metallurgy and 3D/4D–Printing: From Feedstock Powder to Applications.
Uncontrolled Keywords:	PMEDC, coating, surface roughness, micro-hardness, topography, micro-scratch test; solid lubricant; wear
Subjects:	T Technology > T Technology (General) T Technology > TJ Mechanical engineering and machinery T Technology > TS Manufactures
Faculty / School / Research Centre / Research Group:	Faculty of Engineering & Science > School of Engineering (ENG) Faculty of Engineering & Science
Last Modified:	18 Nov 2025 10:34
URI:	https://gala.gre.ac.uk/id/eprint/49431

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