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磷酸介质中甲酚红对冷轧钢的缓蚀作用

, PP. 354-357

Keywords: ,磷酸,甲酚红,缓蚀,吸附

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Abstract:

用失重法研究了酸碱指示剂甲酚红对冷轧钢在1.0~10.0mol/LH3PO4溶液中的缓蚀作用.结果表明甲酚红对冷轧钢在1.0mol/LH3PO4溶液中具有良好的缓蚀作用,且在钢表面的吸附符合Temkin吸附等温式,缓蚀率随缓蚀剂浓度的增加而增大,但随磷酸浓度和温度的增加而减小.通过吸附理论和动力学公式求出了相应的吸附热力学及动力学参数,并根据这些参数详细讨论了缓蚀作用机理.

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