Dilute magnetic solid solution type metal anti-corrosion pigment

Abstract

The invention belongs to the technical field of inorganic fine chemical engineering, and particularly relates to a dilute magnetic solid solution type metal anti-corrosion pigment and a preparation method thereof. The mixed-valence Mn-doped ZnO-based diluted magnetic solid solution anti-corrosion pigment with a spatial network structure has the advantages that the invasion of corrosive electrolyte to a metal substrate is effectively prevented by the hydrophobicity and a multi-stage barrier of the mixed-valence Mn-doped ZnO-based diluted magnetic solid solution anti-corrosion pigment; in addition, the ZnO-based solid solution is endowed with dilute magnetism by doping the mixed valence Mn atoms, the electron motion path is deflected or collided with each other by the Lorentz force generated by the system, and the electrochemical corrosion rate is slowed down. The corrosion inhibition performance of the Mn-doped ZnO-based diluted magnetic solid solution type metal anti-corrosion pigment is respectively improved by 455.4% and 73.8% compared with the corrosion inhibition performance of a protective layer prepared by taking epoxy resin and zinc oxide as anti-corrosion pigments. The design strategy based on the microstructure and the magnetic property of the pigment provides a new thought for design and synthesis of a novel metal anti-corrosion pigment.

Description

technical field [0001] The invention belongs to the technical field of inorganic fine chemicals, and in particular relates to a dilute magnetic solid solution metal anticorrosion pigment and a preparation process thereof. Background technique [0002] As we all know, in the metal anticorrosion system, the corrosive medium (such as Cl - 、H 2 O, O 2 ) rapid permeation after passing through the barrier layer and the continuous occurrence of electrochemical reactions are important reasons for the promotion of metal corrosion. Any method that can hinder or cut off the above physical and chemical processes will slow down the damage of the matrix to varying degrees. [0003] Dilute magnetic solid solutions (DMSs) have been widely used in the fields of magnetism, electricity, and optics, and have attracted extensive attention from researchers. Micromagnetic fields generated by multiple magnetic centers in DMSs induce the Lorentz force, thereby deflecting the traveling path of el...

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Problems solved by technology

Studies have shown that spatial network nanostructures have stronger mechanical resistance, but so far little attention has been paid to the application of cross-network ZnO samples for marine corrosion protection

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