Anhydrous lanthanum chloride manufacturers share the research progress of preparation methods of rare earth oxide hydrophobic coatings

Research background

While studying its hydrophobic mechanism, researchers prepared rare earth oxide hydrophobic coatings on different substrates by template etching, spraying, hydrothermal, electrochemical deposition, atomic layer deposition and magnetron sputtering, which not only made the substrate hydrophobic, but also enhanced its corrosion resistance and wear resistance.

research status

Based on the summary of the research status of rare earth oxide hydrophobic coatings at home and abroad in recent years, the two different viewpoints of hydrophobic mechanism and various preparation methods are mainly introduced, and the follow-up research and application prospects are prospected.

Method overview

1. Spraying method

Fig. 1 (a) preparation method of simple spray hydrophobic coating, (b) contact angle change of CeO2 coating after heat treatment at different temperatures and (c) preparation process of hydrophobic stainless steel and schematic diagram of oil-water separation

2. Hydrothermal method

Fig. 2 direct hydrothermal growth of CeO2 coating

3. Deposition method

Deposition methods can be divided into electrochemical deposition and atomic layer deposition. Electrochemical deposition is the use of electrochemical methods to polymerize cations in electrolyte solution to the cathode to form a coating. This method requires that the base material must have conductivity.

Future development

Exploring the hydrophobic mechanism of rare earth oxide hydrophobic coatings and developing process technologies suitable for large-scale production will be one of the important directions of the future development of rare earth oxide hydrophobic coatings.

Journal author

Material guide, 2021 issue Z2

Authors: He Hui, Zhang Zhongming, Jiang Yonggang, et al

Author:

(1) Key Laboratory of new ceramic fibers and composites, National University of Defense Science and technology

(2) School of materials science and engineering, Xi'an University of Technology