Corrosion behavior of 20# carbon steel with cold sprayed Al-Al2O3 coatings under insulation

Xiao Min Bai; Jian Qun Tang; Xiao Liang Lu; Jian Ming Gong

doi:10.11973/fsyfh-201701003

Corrosion behavior of 20^# carbon steel with cold sprayed Al-Al₂O₃ coatings under insulation

Xiao Min Bai, Jian Qun Tang, Xiao Liang Lu, Jian Ming Gong

School of Mechanical and Power Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Immersion tests were conducted to simulate the corrosion under insulation (CUI) in 0. 01%, 0. 1% and 1% NaCl solution at 80 °C. Corrosion protection performance of three different coatings (initial spray powder were 100% Al, 70% Al + 30% A12O3 and 50% Al+50% A12O3 respectively) on 20^# carbon steel pipe was analyzed by weight loss, macro-appearance, microstructure and chemical component analysis. The results showed that cold sprayed A1/A1₂O₃ coating could protect the pipe substance from corrosion under insulation effectively. When A1₂O₃ was added into spray powder, the deposition efficiency and hardness increased, but the corrosion resistance decreased. Overall, considering both corrosion resistance and strength, the coating sprayed with 70% Al + 30% Al₂O₃ was most suitable for using in engineering.

Original language	English
Article number	1005-748X(2017)01-0011-06
Journal	Corrosion and Protection
Volume	38
Issue number	1
DOIs	https://doi.org/10.11973/fsyfh-201701003
State	Published - Jan 2017

Keywords

Alumium/alumina coating
Cold spray
Corrosion under insulation (CUI)
NaCl solution

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10.11973/fsyfh-201701003

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title = "Corrosion behavior of 20# carbon steel with cold sprayed Al-Al2O3 coatings under insulation",

abstract = "Immersion tests were conducted to simulate the corrosion under insulation (CUI) in 0. 01%, 0. 1% and 1% NaCl solution at 80 °C. Corrosion protection performance of three different coatings (initial spray powder were 100% Al, 70% Al + 30% A12O3 and 50% Al+50% A12O3 respectively) on 20# carbon steel pipe was analyzed by weight loss, macro-appearance, microstructure and chemical component analysis. The results showed that cold sprayed A1/A12O3 coating could protect the pipe substance from corrosion under insulation effectively. When A12O3 was added into spray powder, the deposition efficiency and hardness increased, but the corrosion resistance decreased. Overall, considering both corrosion resistance and strength, the coating sprayed with 70% Al + 30% Al2O3 was most suitable for using in engineering.",

keywords = "Alumium/alumina coating, Cold spray, Corrosion under insulation (CUI), NaCl solution",

author = "Bai, {Xiao Min} and Tang, {Jian Qun} and Lu, {Xiao Liang} and Gong, {Jian Ming}",

year = "2017",

month = jan,

doi = "10.11973/fsyfh-201701003",

language = "英语",

volume = "38",

journal = "Corrosion and Protection",

issn = "1005-748X",

publisher = "Shanghai Research Institute of Materials",

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T1 - Corrosion behavior of 20# carbon steel with cold sprayed Al-Al2O3 coatings under insulation

AU - Bai, Xiao Min

AU - Tang, Jian Qun

AU - Lu, Xiao Liang

AU - Gong, Jian Ming

PY - 2017/1

Y1 - 2017/1

N2 - Immersion tests were conducted to simulate the corrosion under insulation (CUI) in 0. 01%, 0. 1% and 1% NaCl solution at 80 °C. Corrosion protection performance of three different coatings (initial spray powder were 100% Al, 70% Al + 30% A12O3 and 50% Al+50% A12O3 respectively) on 20# carbon steel pipe was analyzed by weight loss, macro-appearance, microstructure and chemical component analysis. The results showed that cold sprayed A1/A12O3 coating could protect the pipe substance from corrosion under insulation effectively. When A12O3 was added into spray powder, the deposition efficiency and hardness increased, but the corrosion resistance decreased. Overall, considering both corrosion resistance and strength, the coating sprayed with 70% Al + 30% Al2O3 was most suitable for using in engineering.

AB - Immersion tests were conducted to simulate the corrosion under insulation (CUI) in 0. 01%, 0. 1% and 1% NaCl solution at 80 °C. Corrosion protection performance of three different coatings (initial spray powder were 100% Al, 70% Al + 30% A12O3 and 50% Al+50% A12O3 respectively) on 20# carbon steel pipe was analyzed by weight loss, macro-appearance, microstructure and chemical component analysis. The results showed that cold sprayed A1/A12O3 coating could protect the pipe substance from corrosion under insulation effectively. When A12O3 was added into spray powder, the deposition efficiency and hardness increased, but the corrosion resistance decreased. Overall, considering both corrosion resistance and strength, the coating sprayed with 70% Al + 30% Al2O3 was most suitable for using in engineering.

KW - Alumium/alumina coating

KW - Cold spray

KW - Corrosion under insulation (CUI)

KW - NaCl solution

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DO - 10.11973/fsyfh-201701003

M3 - 文章

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JO - Corrosion and Protection

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ER -

Corrosion behavior of 20^# carbon steel with cold sprayed Al-Al₂O₃ coatings under insulation

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