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Effect of sodium hexa-meta phosphate as pore-sealing agent on the corrosion performance of Al-Zn coating deposited by twin-wire arc thermal spray process in 3.5 wt.% NaCl solution3.5 중량% NaCl 용액에서 쌍선 아크 용사 공정으로 증착된 Al-Zn 코팅의 부식 성능에 대한 기공 밀봉제로서의 헥사메타인산나트륨의 영향

Other Titles
3.5 중량% NaCl 용액에서 쌍선 아크 용사 공정으로 증착된 Al-Zn 코팅의 부식 성능에 대한 기공 밀봉제로서의 헥사메타인산나트륨의 영향
Authors
Singh Jitendra KumarAdnin Raihana Jannat이한승
Issue Date
Nov-2022
Publisher
한국건축시공학회
Keywords
강재; 부식; 코팅; SEM, EIS; steel; corrosion; coating; SEM; EIS
Citation
한국건축시공학회 2022 봄학술발표대회 논문집, v.22, no.2, pp 81 - 82
Pages
2
Indexed
OTHER
Journal Title
한국건축시공학회 2022 봄학술발표대회 논문집
Volume
22
Number
2
Start Page
81
End Page
82
URI
https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/114040
Abstract
Al and Zn are used to protect the steel structures from corrosion. In the present studies, 15Al-85Zn alloy wires has been used for the deposition of coating by arc thermal spray process. Moreover, this process of coating exhibited severe defects formation, therefore, this coating was post-treated with different concentrations i.e. 0.05, 0.1 and 0.5M sodium hexa meta phosphate (Na6[(PO3)6]: SHMP) to fill to defects of deposited coatings and assessed their corrosion resistance in 3.5 wt.% NaCl solution with exposure periods. After the treatment, the porosity of the coating reduced significantly by formation of composite oxide films onto the coating surface. Initially, 0.5 M SHMP treated coating exhibited highest in total impedance due to significant reduction of porosity but once the exposure periods are extended, the composite oxides are dissolved, thus, total impedance is decreased.
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ERICA 공학대학 (MAJOR IN ARCHITECTURAL ENGINEERING)
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