Effects of the Different Solid Deposits on the Corrosion Behavior of Pure Fe in Water Vapor at 500°C.
Effects of the Different Solid Deposits on the Corrosion Behavior of Pure Fe in Water Vapor at 500°C.
复制标题
不同固体沉积物对纯铁在500℃水蒸气中腐蚀行为的影响
作者：
Tang Y;Shen X;Liu Z;Li Y
对纯铁在固体钠盐存款环境中的腐蚀进行了综合研究，通过质量增加测量、X射线衍射（XRD）、扫描电子显微镜（SEM）、动电位极化和电化学阻抗谱（EIS）进行了NaCl或Na 2SO 4）与H2O和O2的混合物在500°C下的反应。结果表明，固体NaCl或Na 2SO 4存款与Fe 2 O3保护膜反应，加速了腐蚀速率，并最终导致Fe 2 O3保护膜的破坏。纯铁在固体NaCl中的腐蚀速率高于在固体Na 2SO 4中的腐蚀速率，这是因为Fe在固体NaCl+H2O+O2中的化学反应活化能（Ea）较低（即，140.5 kJ/mol）比在固体Na 2SO 4 +H2O+O2中（即，200.9kJ/mol）。值得注意的是，纯Fe与固体NaCl存款的电化学腐蚀速率为1.16 × 10−4 A/cm 2，略低于与固体Na 2SO 4存款。
A comprehensive corrosion investigation of pure Fe in an environment of solid sodium salt deposit (i.e., NaCl or Na2SO4) with mixtures of H2O and O2 at 500°C was conducted by mass gain measurement, X-ray diffraction (XRD), scanning electron microscope (SEM), potentiodynamic polarization, and electrochemical impedance spectroscopy (EIS). The results showed that corrosion rates were accelerated with solid NaCl or Na2SO4 deposit due to their reaction with the formed protective scale of Fe2O3 and subsequently resulted in its breakdown. The corrosion rate of pure Fe with solid NaCl is higher than that with solid Na2SO4 because of the lower activation energy (Ea) for chemical reaction of Fe in solid NaCl+H2O+O2 (i.e., 140.5 kJ/mol) than that in solid Na2SO4+H2O+O2 (i.e., 200.9 kJ/mol). Notably, the electrochemical corrosion rate of pure Fe with solid NaCl deposit, 1.16 × 10−4 A/cm2, was a little lower than that with solid Na2SO4 deposit.
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500℃湿氧流中固体Na2SO4沉积物下纯铁的腐蚀行为
DOI：
10.3390/ma7096144
发表时间：
2014-08-27
期刊：
Materials (Basel, Switzerland)
影响因子：
--
作者：
Tang Y;Liu L;Fan L;Li Y;Wang F
通讯作者：
Wang F
影响因子：
7.4
作者：
SMITH, DE
通讯作者：
SMITH, DE
影响因子：
1.8
作者：
Folkeson, N.;Jonsson, T.;Svensson, J-E
通讯作者：
Svensson, J-E
影响因子：
2.2
作者：
Shu, YH;Wang, F;Wu, WT
通讯作者：
Wu, WT
Ti60 合金在 600°C 湿氧流中固体 NaCl 沉积物下的腐蚀行为
影响因子：
4.6
作者：
Fan L;Liu L;Yu Z;Cao M;Li Y;Wang F
通讯作者：
Wang F