Slagging resistance mechanism of precursor ceramic coating for solid fuel-fired boilers
Open accessAbstract
Slag formation on the heating surface in solid fuel-fired boilers is a common problem. In this paper, with polysilazane used as the precursor, three different ceramic coatings were prepared by adding hexagonal boron nitride (h-BN), ZrO 2, and Al 2 O 3 inert fillers. The coatings were applied to a TP347 substrate by the Czochralski method. The spreading and solidification experiments of the molten ash were performed and matched with numerical simulation. The results show that compared with the steel sheet, the molten ash has a large contact angle on the coating, a small spreading coefficient and the same spreading time, indicating that the coating has the slagging resistance property. The coating with the addition of h-BN has better slagging resistance properties than the other two coatings. The numerical simulation results are consistent with the experimental results.
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The use of low surface energy coatings such as h-BN reduces the contact angle of the molten ash in comparison with the surface of a bare steel.
“The results showed that the use of low surface energy coatings such as h-BN reduces the contact angle of the molten ash in comparison with the surface of a bare steel.”
From High Temperature Corrosion Resistant and Anti-slagging Coatings for Boilers: A Review (2024) · cites this paper as [145]
The slag reduction by coatings is contributed by two mechanisms: prevention of high temperature corrosion from slag deposits and reducing the wettability of molten fly ash on the coated surfaces.
“The slag reduction by coatings is contributed by two mechanisms, which are (I) prevention of high temperature corrosion from slag deposits [144, 149, 150] and (II) reducing the wettability of molten fly ash on the coated surfaces [145, 147].”
From High Temperature Corrosion Resistant and Anti-slagging Coatings for Boilers: A Review (2024) · cites this paper as [145]
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High Temperature Corrosion Resistant and Anti-slagging Coatings for Boilers: A Review
Khantisopon, K., Singh, S., Jitputti, J., Berndt, C. C., & Ang, A. S. M. (2024) · High Temperature Corrosion of Materials · doi:10.1007/s11085-024-10251-0 · Cited by 24 · see citing works
- Authors
- Wang, G., Zhang, B., Wang, J., Chi, Z., Zhang, G., li, J., Wang, J., Qian, P., & Yang, S.
- Affiliations
- China Jiliang University (CN)
- Corresponding author
- Wang, Guangxin
- Wang, Jinqing
- Wang, Jie
- Venue
- IOP Conference Series: Materials Science and Engineering
- Publisher
- IOP Publishing
- Published
- 2020-01-01
- Volume
- 721
- Issue
- 1
- Pages
- 012023
- ISSN
- 1757-8981 (ISSN-L)
- 1757-899X
- OpenAlex
- W3000570585
- Cited by
- 3
- References
- 0
- Citations by year
- 2024: 2 · 2023: 1
- FWCI
- 0.37
- Type
- conference paper
- Language
- en
- Open access
- diamond
- doi.org
- Licence
- Locations
- IOP Conference Series Materials Science and Engineering (publishedVersion, cc-by)
- Funders
- National Natural Science Foundation of China (51876197)
- Natural Science Foundation of Zhejiang Province
- Topics
- Physical Sciences › Engineering › Aerospace Engineering › High-Temperature Coating Behaviors
- Physical Sciences › Materials Science › Ceramics and Composites › Advanced ceramic materials synthesis
- Physical Sciences › Engineering › Mechanical Engineering › Metallurgical Processes and Thermodynamics
- Keywords
- ceramic coatings, hexagonal boron nitride, zirconia, alumina, Czochralski crystal growth, contact angle, boiler heating surfaces
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