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1005634961
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| We have investigated how the effectiveness of a corrosion inhibitor added to an aqueous solution to suppress the corrosion rate of steel is reduced by the addition of sand. The equilibrium adsorption isotherms of the inhibitor with respect to both the steel surface (consisting of iron carbonate under the corrosion conditions used here) and the sand surface have been measured. The results enable the quantitative calculation of how the surface concentration of inhibitor at the steel surface is reduced by sand addition. Combining the adsorption information with measurements of how the steel corrosion rate depends on the inhibitor surface concentration enables the quantitative prediction of the inhibitor effectiveness as a function of sand concentration. Excellent agreement is obtained between calculated and measured values of the inhibitor performance as functions of both inhibitor and sand concentrations. This methodology demonstrates how the optimization of a corrosion inhibitor formulation for specific application conditions should take into account the parasitic adsorption of the inhibitor onto the competitor surfaces present. |
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禁蟲 (正式寫手)
- 翻譯EPI: 19
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愛與雨下: 金幣+1 2012-11-24 17:26:16
Carena: 金幣+10, 翻譯EPI+1, 金幣代發(fā) 2013-01-06 17:31:10
愛與雨下: 金幣+1 2012-11-24 17:26:16
Carena: 金幣+10, 翻譯EPI+1, 金幣代發(fā) 2013-01-06 17:31:10
| 我們研究了砂子是如何對(duì)抑制鋼鐵腐蝕的抗腐蝕劑水溶液產(chǎn)生不利影響的。測(cè)量了關(guān)于鋼鐵表面（在此腐蝕條件下，表面由碳酸鐵組成）和砂子表面的抗腐蝕劑的平衡吸附等溫線。結(jié)果實(shí)現(xiàn)了關(guān)于表面抗腐蝕劑濃度因砂子的存在而減小的數(shù)值計(jì)算。 綜合吸附信息并測(cè)量抗腐蝕劑濃度對(duì)鋼鐵腐蝕速率的影響關(guān)系，就能夠預(yù)測(cè)抗腐蝕劑效率關(guān)于砂子濃度的函數(shù)關(guān)系。關(guān)于抗腐蝕劑濃度和砂子濃度的抗腐蝕劑效果的函數(shù)計(jì)算值和測(cè)量值之間相互吻合。此方法體系表明了在優(yōu)化用于特定環(huán)境的抗腐蝕劑配方時(shí)，應(yīng)該考慮到抗腐蝕劑在競(jìng)爭(zhēng)物表面的寄生式吸附。 |
2樓2012-11-24 16:48:25
1005634961 
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3樓2012-11-24 19:48:11
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