Understanding the role of tungsten species in diamond-like carbon coatings for enhanced interaction with ionic liquids
Year: 2024
Type: article
Abstract: This article investigates the impact of tungsten species in tungsten-doped diamond-like carbon (WDLC) coatings on their interaction with ionic liquids (ILs). Using analytical techniques like in-situ neutron reflectometry, time of flight secondary ion mass spectrometry and Raman spectroscopy, we examine the adsorption mechanism of tributylmethylphosphonium dimethylphosphate on WDLC and undoped hydrogenated DLC (hDLC) coatings. These techniques provide high-resolution insights into these molecular interactions, showing tungsten doping enhances tungsten carbide (WC) and tungsten trioxide (WO3) formation. These species facilitate the dissociation of dimethylphosphate anions, forming a robust 0.75 nm-thick tungsten phosphate layer on WDLC surfaces. This layer, adhering strongly even after cleaning, underscores tungsten's role in enhancing WDLC coatings' effectiveness with ILs, suggesting advancements in lubricants and protective coatings.
Source: Tribology International
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $5,230
Awards: Eco-interfaces de elevado desempenho e baixo atrito criadas pela reactividade de revestimentos inovadores DLC e líquidos iónicos, Resilient and sustainable critical raw materials REE supply chains for the e-mobility and renewable energy ecosystems and strategic sectors, G3882210382, G4636975817, Nanostructured Materials, G6040769528, G6459662756, G6708603528, SINGLE-GRAIN RE-ENGINEERED ND-FE-B PERMANENT MAGNETS, Tribology
OpenAlex ID: W4402343785