Influence of Phosphoric Acid on the Adhesion Strength between Rusted Steel and Epoxy Coating
نویسندگان
چکیده
In this work, we evaluated the influence of phosphoric acid in conjunction with a tannic converter formula on adhesion coating system by employing epoxy as top coating. The morphology and composition rusted steel before after treatment were determined scanning electron microscopy (SEM) Fourier transform infrared (FTIR) spectroscopy. test result showed that strength between rust was enhanced from 1.93 MPa to 11.63 50 g/L formula. Further investigation working mechanism such revealed improvement could be attributed formation micro-cracked compact conversion layer. This layer reinforce anchoring through pinning effect. It also found both pH phosphate radical important factors improve strength.
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ژورنال
عنوان ژورنال: Coatings
سال: 2021
ISSN: ['2079-6412']
DOI: https://doi.org/10.3390/coatings11020246