Jamal A, Haq GU, Hussain S, Gul M, Saifullah M, Anjum MAR. Enhanced Tribological Properties of Electrodeposited Fe-W Alloy Coatings through Carburization.
LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023;
39:16328-16335. [PMID:
37939319 DOI:
10.1021/acs.langmuir.3c01909]
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Abstract
Carburization is a promising surface-hardening approach to maximize the tribological and mechanical properties of metals and alloys by making thin-layer surface carbides. The current study investigates the effect of carburizing on the electrodeposited Fe-W alloy coating. This process involeves the thermal decomposition of ethanol in an argon (Ar) atmosphere at varying temperatures. The amorphous electrodeposits of Fe-W alloy coating formed at optimized current density (500 A/cm2) are transformed to the uniform W-rich reinforced bimetallic carbide (Fe3W3C) layers at a carburizing temperature of 850 °C. The sample Fe-50WC (850 °C) shows enhanced hardness and highest wear resistance with a lowest specific wear rate (10-7 mm3/Nm) as compared to the as-electrodeposited Fe-W alloy and other Fe-W, Co-W, and hard chromium coatings reported in the literature. The present strategy can be applied to develop alternative, low cost, and environmentally friendly W-based composite coatings to replace the toxic chromium coatings.
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