Nanotechnology
Nanotechnology
4 years ago

Unctuous ZrO2 Nanoparticles with Improved Functional Attributes as Lubricant Additives.

Humberto Rodríguez-Solla, Jorge Espina-Casado, Marta Elena Díaz-García, Ángel José Del Reguero-Huerga, Rosana Badía Laíño, Alfonso Fernández-González
One of the main drawbacks in the application of metal oxide nanoparticles as lubricant additives is their poor stability in organic media, despite the good anti-wear, friction-reducing and high load capacity properties described for these materials. In this work, we present a novel procedure to chemically cap the surface of ZrO2 nanoparticles (ZrO2NPs) with long hydrocarbon chains in order to obtain stable dispersions of ZrO2NPs in non-aqueous media without disrupting their attributes as lubricant additives. C-8, C-10 and C-16 saturated flexible chains have been attached to the ZrO2NPs surface and their physical and chemical characterization was performed by Transmission Electron Microscopy (TEM), Thermo Gravimetric Analysis (TGA), Attenuated Total Reflectance-Fourier Transform Infrared Spectroscopy (ATR-FTIR), X-Ray Photoelectron Spectroscopy (XPS) and Solid-State Nuclear Magnetic Resonance (SS-NMR). The dispersion stability of the modified ZrO2NPs in non-aqueous media was studied using Static Multiple Light Scattering (MLS). Tribological tests demonstrated that dispersions of the long-chain capped ZrO2NPs in base lubricating oils exhibited low friction coefficients and improved anti-wear properties of base oil when compared with the raw lubricating oil.

Publisher URL: http://doi.org/10.1088/1361-6528/aa93ca

DOI: 10.1088/1361-6528/aa93ca

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.