Author:
Changshan Huang,Jinying Wu,Min Chen,Huiwu Xu,Min Zhang,Mian Xue,Xiaoguang Zhang
Abstract
Abstract
In the experiment, rotative weight loss method, electrochemical polarization, MPN, etc. were used to investigate the corrosion inhibition and bactericidal performance of compound-type corrosion-inhibition bactericide composed of phosphono-, carboxyl quaternary ammonium salt, etc. on A3 carbon steel in industrial recycling cooling water. The experimental test results showed that when the content of compound agentia reached 100 mg. L−1, the corrosion rate of it on A3 carbon steel was 0.0366 mm. a−1, superior to relative standard regulations, less than 0. 075mm.a−1. While metallographic-phase microscopy test showed that there is a layer of protective film on the surface of A3 carbon steel, which indicated that compound agentia had relatively better corrosion-inhibition effect on A3 carbon steel; when the content of compound agentia reached 80-100 mg. L−1, the sterilizing rate of compound agentia on heterotrophic bacterium and sulfate reducing bacteria were up to more than 99%, which indicated that compound agentia had good bactericidal performance.
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