Self-cleaned zirconia coatings prepared using a co-precursor sol–gel method

Bangi, Uzma K.H.; Ransing, Akshay A.; Lee, Kyu‐Yeon; Park, Hyung Ho

doi:10.1080/02670844.2021.1915668

Cited by 11 publications

(4 citation statements)

References 28 publications

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“…Uzma K.H. Bangi et al [31] use the method of co-precursor sol-gel, using ZrPro as the precursor and trimethylchlorosilane, hexamethyldisilane, and perfluorodecyltriethoxysilane as the three silane coupling agents. Prasanth and Vuppalapati Giri et al [32] prepared PVDF-modified ZrO 2 nanoparticle superhydrophobic coatings using a spray coating method.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Anti-Icing Properties of Zirconia Superhydrophobic Coating

Zhou,

Zheng,

Sheng

et al. 2024

Molecules

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Zirconia (ZrO2) is a ceramic material with high-temperature resistance and good insulating properties. Herein, for the first time, the surface of ZrO2 was modified with docosanoic acid (DCA) to improve its self-cleaning and hydrophobic properties. This surface modification transformed the surface of ZrO2 from hydrophilic to superhydrophobic. A two-step spraying method was used to prepare the superhydrophobic surface of ZrO2 by sequentially applying a primer and a topcoat. The primer was a solution configured using an epoxy resin as the adhesive and polyamide as the curing agent, while the topcoat was a modified ZrO2 solution. The superhydrophobic surface of ZrO2 exhibited a contact angle of 154° and a sliding angle of 4°. Scanning electron microscopy, X-ray diffraction, energy-dispersive X-ray spectroscopy, thermogravimetric analysis, and other analytical techniques were used to characterize the prepared zirconia particles and their surfaces. Moreover, results from surface self-cleaning and droplet freezing tests showed that DCA-modified ZrO2 can be well combined, and its coatings show good self-cleaning and anti-icing properties on TA2 bases.

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Section: Introductionmentioning

confidence: 99%

Preparation and Anti-Icing Properties of Zirconia Superhydrophobic Coating

Zhou,

Zheng,

Sheng

et al. 2024

Molecules

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“…Therefore, the research and development of superhydrophobic materials is of great significance to daily life and industrial development. The current method of forming a superhydrophobic surface is to construct a micronano structure on the surface with low surface energy or modify the micronano structure with low surface energy substances. − At present, the methods for preparing superhydrophobic surfaces mainly include: the layer-by-layer self-assembly method, spraying method, template method, chemical vapor deposition method, sol–gel method, etching method, spin-coating method, and so on. For example, Chi and others used hydrophobic silicon dioxide particles and organosilane binder to prepare an antireflection coating with mechanical firmness and self-cleaning performance.…”

Section: Introductionmentioning

confidence: 99%

Preparation of a Superhydrophobic Surface by a One-Step Powder Pressing Method with Liquid Silicone Rubber As the Carrier

et al. 2023

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The preparation methods of the superhydrophobic surface play an important role in its application, but most of the existing preparation methods are complicated in operation, high in cost, and polluting to the environment. In order to find a simple, rapid, lowcost, and nonenvironmentally polluting preparation method of the superhydrophobic surface, this paper used liquid silicone rubber as the carrier. Before the liquid silicone rubber was nearly cured, it was evenly covered with a layer of silicon dioxide powder, and then 5 N weight was used to compact the powder on the rubber surface, so that the superhydrophobic surface was quickly formed on its surface. The wettability, bouncing performance, self-cleaning performance, and bending durability of liquid silicone rubber before and after treatment were compared. The results show that the static contact angle and rolling angle of the liquid silicone rubber after powder pressing were 158.22 ± 2.01°and 1.00 ± 0.50°, respectively. Moreover, the superhydrophobic surface formed by the powder pressing method had good self-cleaning performance, high temperature resistance, bending resistance, and excellent droplet bounce performance. The strategy of preparing a superhydrophobic surface by a one-step powder pressing method may be applied to the preparation of the superhydrophobic surface on a large scale.

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“…In reality, the CMAS on the surface of TBCs is usually composed of sand, ash and dust, and melts at temperatures of more than 1200°C. Molten CMAS rapidly infiltrates into segmented or columnar TBCs through connected pores or intercolumnar gaps inside the coatings and leads to their premature failure [7]. Moreover, CMAS melts actively react with the YSZ coating and partially dissolve it via the removal of yttrium ions.…”

Section: Introductionmentioning

confidence: 99%

Corrosion resistance of modified YSZ coatings subjected to CMAS attacks

Wang

Zhang

Han

et al. 2022

Surface Engineering

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The deterioration of thermal barrier coatings in reaction engines due to Ca-Mg-Al-Si (CMAS) attacks has been an important issue in recent years. Al 2 O 3 -20 wt-% TiO 2 (AT) powder was mechanically doped into yttria-stabilized zirconia (YSZ). The corresponding coatings were fabricated using APS to modify the CMAS corrosion resistance. The corrosion-induced microstructure evolution and the composition development in the YSZ and AT-YSZ coatings were investigated. The AT-YSZ coating contained smaller voids and fewer cracks with a much more obvious laminated structure in contrast with the YSZ coatings. After CMAS attack, the YSZ coating flaked off, while the AT-YSZ coating was strongly bonded to the substrate. Phases from tetragonal (t'-ZrO 2 ) to monoclinic (m-ZrO 2 ) were detected, while the MgAl 2 O 4 spinel and gehlenite Ca 2 Al 2 Si 2 O 8 phases were formed after the CMAS corrosion. AT20 exists independently in the AT-YSZ coating, which readily causes Al 2 O 3 to accumulate in the CMAS and effectively arrests its infiltration.

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Self-cleaned zirconia coatings prepared using a co-precursor sol–gel method

Cited by 11 publications

References 28 publications

Preparation and Anti-Icing Properties of Zirconia Superhydrophobic Coating

Preparation and Anti-Icing Properties of Zirconia Superhydrophobic Coating

Preparation of a Superhydrophobic Surface by a One-Step Powder Pressing Method with Liquid Silicone Rubber As the Carrier

Corrosion resistance of modified YSZ coatings subjected to CMAS attacks

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