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Corrosion inhibition of steel in phosphoric acid

机译：磷酸中钢的腐蚀抑制

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Phosphoric acid has been used in many industrial applications and can be in contact with a lot chemical and petrochemical equipment. Most of this equipment is made of steel alloys that may be damaged because of contact with acid. Corrosion inhibitors can be used for to protect steel alloys against several forms and various environments of corrosion. In this paper, the efficiency and applications of organic and inorganic inhibitors in different environments of phosphoric acid are investigated. More than 40 papers were collected and reviewed. Surveys of the stated works in phosphoric acid environments are documented. It was concluded that organic inhibitors performed as good corrosion inhibitors and are used widely. The use of inorganic inhibitors was limited. Most of studied inhibitors follow Langmuir’s adsorption isotherm, and the mechanism of the inhibition can be ascribed to the mixed effect on cathodic and anodic reactions. The synergistic effect was also addressed in the present work.
机译：磷酸已被用于许多工业应用中，并且可以与大量化学和石化设备接触。大多数该设备由钢合金制成，由于与酸接触而可能损坏。腐蚀抑制剂可用于保护钢合金免受几种形式和各种腐蚀的环境。本文研究了磷酸不同环境中有机和无机抑制剂的效率和应用。收集并审查了40多篇论文。记录了磷酸环境中所述作品的调查。结论是，有机抑制剂表现为良好的腐蚀抑制剂并广泛使用。使用无机抑制剂是有限的。大多数研究抑制剂关注Langmuir的吸附等温线，并且抑制的机制可以归因于对阴极和阳极反应的混合作用。在目前的工作中也解决了协同效应。

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