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- Customized Nanocoating on Tungsten Substrate
Tungsten is so thick that it is considered one of nature's toughest substances. Tungsten is utilized in a variety of applications because it is extremely strong, long-lasting, and corrosion-resistant, as well as having the greatest melting point and tensile strength of any element. Incandescent bulb filaments, X-ray tubes, electrodes in tungsten gas shield welding, high-temperature alloys, radiation shielding, and military applications are just a few of the uses for tungsten.
Alfa Chemistry offers unique functionalized coatings on tungsten substrates. Tungsten with a functional surface offers significant performance advantages in a number of applications. You may increase the performance of practically any tungsten-based product with our broad and simple-to-apply specialty coating treatments. Work with us to make your tungsten surfaces more functional. Partner with us to functionalize your tungsten surfaces together! Join forces with us to functionalize your tungsten surfaces.
Alfa Chemistry provides a number of surface coating technologies that can be used to improve the performance of tungsten surfaces. Our tungsten metal surface alteration choices include, but are not limited to:
We can create nanoscale, optically transparent, and long-lasting coatings.
Learn more about our hydrophobic and oleophobic coatings.
Learn more about our hydrophilic coatings.
Learn more about our adhesion promotion coatings.
Learn more about our particle-modified coatings.
Learn more about our lubricant coatings.
Case 1: PTFE/TiO2 hydrophobic bilayer coating
Alfa Chemistry creates self-regulating polytetrafluoroethylene (PTFE)/TiO2 organic-inorganic bilayer coatings on tungsten alloys using heat and gradient pressure field enhanced plasma electrolytic oxidation (TGEPEO). The bottom porous layer of TiO2 is firmly bound to the top layer of PTFE with customizable thickness. With a water contact angle of 138.0° and an excellent self-cleaning function, the bilayer coating has a particular hydrophobic surface. Furthermore, the PTFE/TiO2 bilayer coating has outstanding corrosion resistance as well as strong electrical insulation. More crucially, the double-layer coating's microstructure can self-regulate during long-term immersion, boosting chemical stability.
Case 2: Dense Tungsten particles with a silicon coating
At 645 °C, we used a fluidized bed chemical vapor phase technique to create silicon coatings on tungsten particles. A continuous silicon film with silicon layer thicknesses ranging from 0.1 to 1 m wraps the tungsten particles uniformly. New experiments with fission particles are being conducted now that the feasibility of this coating has been proved. The addition of a silicon deposition layer on the surface of the tungsten particles improves the behavior of the fuel plates under irradiation and at high fuel consumption, and can be employed for nuclear research.
Fig 1. SEM micrographs of the tungsten particles before (a) and after coating with a silane molar fraction of 0.5% (b) and 5.2% (c). (Vanni F, et al. 2015)
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