Effect of Sealing on the Corrosion Resistance of Plasma-Sprayed Alumina Coatings

Eui Pyo Kwon; Se Woong Kim; Jong Kweon Lee

doi:10.3740/MRSK.2022.32.10.442

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2022 Vol.32, Issue 10 Preview Page

Effect of Sealing on the Corrosion Resistance of Plasma-Sprayed Alumina Coatings 실링이 플라즈마 스프레이 코팅된 알루미나 코팅재의 내부식성에 미치는 영향

October 2022. pp. 442-447

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Abstract

Sealing treatment is a post-surface treatment of the plasma spray coating process to improve the corrosion resistance of the coating material. In this study, the effect of the sealing on the corrosion resistance and adhesive strength of the plasma spray-coated alumina coatings was analyzed. For sealing, an epoxy resin was applied to the surface of the coated specimen using a brush. The coated specimen was subjected to a salt spray test for up to 48 hours and microstructural analysis revealed that corrosion in the coating layer/base material interface was suppressed due to the resin sealing. Measurement of the adhesive strength of the specimens subjected to the salt spray test indicated that the adhesive strength of the sealed specimens remained higher than that of the unsealed specimens. In conclusion, the resin sealing treatment for the plasma spray-coated alumina coatings is an effective method for suppressing corrosion in the coating layer/base material interface and maintaining high adhesive strength.

Keywords

plasma spray coating

alumina

pores

sealing

corrosion

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Information

Publisher :Materials Research Society of Korea
Publisher(Ko) :한국재료학회
Journal Title :Korean Journal of Materials Research
Journal Title(Ko) :한국재료학회지
Volume : 32
No :10
Pages :442-447
Received Date : 2022-09-29
Revised Date : 2022-10-07
Accepted Date : 2022-10-11
DOI :https://doi.org/10.3740/MRSK.2022.32.10.442

Korean Journal of Materials Research ISSN:1225-0562(Print) 2287-7258(Online) 한국재료학회지

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