Formation mechanism and protective property of corrosion product scale on X70 steel under supercritical CO2 environment
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- 作者：Liang Wei ; Xiaolu Pang ; Chao Liu ; Kewei Gao ; kwgao@yahoo.com" class="auth_mail" title="E-mail the corresponding author
- 关键词：A. Steel ; B. EIS ; B. SEM ; B. XPS ; C. Acid corrosion
- 刊名：Corrosion Science
- 出版年：2015
- 出版时间：November 2015
- 年：2015
- 卷：100
- 期：Complete
- 页码：404-420
- 全文大小：6659 K
文摘
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Formation mechanism of scale formed at 9.5 MPa differed from that at 1 MPa.
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Amorphous layer only formed at supercritical CO2 condition.
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The inner scale formed at 9.5 MPa was more protective than the outer scale.
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Evolution from amorphous layer to inner FeCO3 scale caused localized corrosion.
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Corrosion rate decreased in a logarithm trend with the Young’s modulus of scale.