Anti-corrosion action of the extract of the larix sibiric barrus with different methods applying on the surface of metal

4th School-Seminar of Young Russian Scientists "Problems of Sustainable Regional Development", dedicated to the 70th anniversary of Academician of the Russian Academy of Sciences Arnold Kirillovich Tulokhonov

自然科学（总论）

Kuzmina, I.E.^1 ; Fedorova, A.I.^1

Northeastern Federal University, Chemical Department, Yakutsk

677000, Russia^1

关键词: Anti-corrosion;    Anti-corrosive;    Inhibiting factors;    Iron phosphates;    Metal surfaces;    Porous structures;    Protective action;    Protective effects;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/320/1/012039/pdf
DOI  :  10.1088/1755-1315/320/1/012039

学科分类：自然科学（综合）

来源: IOP

【 摘 要 】

This article provides a method of the larch bark extract applying on a metal surface and also determining its anticorrosive protective action. It has been established that the protective effect of the larch bark extract was 37.5%, and when applying the extract after phosphoric acid, the protective effect increases to 65%, since the formed iron phosphates, having a porous structure, are a good primer and increase the adhesion of the rust converter. The sequence of the solutions application was determined: firstly, phosphoric acid and only after that the extract of larch bark. This sequence of components application leads to an improvement of the anticorrosion characteristics of the studied extract: at the same time, the protective effect of the extract Z and the inhibiting factor of corrosion γ increase 1.7-1.8 times.