600℃ NaCl盐雾环境下GH4169合金的腐蚀行为
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张伟东, 崔宇, 刘莉, 王文泉, 刘叡, 李蕊, 王福会
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Corrosion Behavior of GH4169 Alloy in NaCl Solution Spray Environment at 600oC
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ZHANG Weidong, CUI Yu, LIU Li, WANG Wenquan, LIU Rui, LI Rui, WANG Fuhui
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表2 相关化学反应在600℃时的标准Gibbs自由能
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Table 2 Standard Gibbs free energies (ΔG0) of reactions at 600oC (calculated by HSC Chemistry 5.11 database)
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| Reaction | ΔG0 / (kJ·mol-1) |
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| 4NaCl (g) + O2 (g) + 2TiO2 = 2Na2TiO3 + 2Cl2 (g) | -133.57 | | 4NaCl (g) + 2H2O (g) + TiO2 = 2Na2TiO3 + 4HCl (g) | -64.06 | | 4NaCl (g) + 2Al2O3 + 2H2O (g) = 4NaAlO2 + 4HCl (g) | 280.4 | | 4NaCl (g) + 2Al2O3 + O2 (g) = 4NaAlO2 + 2Cl2 (g) | 174.2 | | 4NaCl (g) + 2Fe2O3 + O2 (g) = 4NaFeO2 + 2Cl2 (g) | 4 | | 4NaCl (g) + 2Fe2O3 + 2H2O (g) = 4NaFeO2 + 4HCl (g) | 3.8 | | 4NaCl (g) + Cr2O3 + 2H2O (g) + 3/2O2 (g) = 2Na2CrO4 + 4HCl (g) | -54.5 | | 4NaCl (g) + Cr2O3 + 5/2O2 (g) = 2Na2CrO4 + 2Cl2 (g) | -54.4 | | 4NaCl (g) + 4NiO + O2 + 2H2O = 4NaNiO2 + 4HCl (g) | - | | 4NaCl (g) + 2Nb2O5 + O2 (g) = 4NaNbO3 + 2Cl2 (g) | - | | 4NaCl (g) + 2H2O (g) + 2MoO2 + O2 (g) = 2Na2MoO4 + 4HCl (g) | -115.6 |
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