Electrochemical testing experimental device for dynamic corrosion of metal

Abstract

The invention provides an electrochemical testing experimental device for dynamic corrosion of a metal. A main body is a gutter channel, and the whole gutter channel is made of polytetrafloroethylene, wherein a transparent PVC reference electrode sleeve plate is arranged above the gutter channel, and is used for placing and fixing a reference electrode; a counter electrode fixing pressure plate and a working electrode fixing pressure plate are arranged below the gutter channel, and are used for fixing a counter electrode, a working electrode and an external interface and preventing two electrode contact holes in the gutter channel from water leakage. An electrochemical workstation and a circulating water system are started to start an electrochemical testing experiment in dynamic corrosion, and experimental results such as a potentiodynamic polarization curve and an alternating current impedance spectrum of dynamic corrosion of a sample are observed on a computer to acquire metal corrosion characteristics in a dynamic corrosion process. The device has the advantages that compared with another corrosion experimental method, a manner of changing original static corrosion into dynamic corrosion has the advantages that a practical corrosion condition can be simulated better and a corrosion condition can be monitored in real time to facilitate better analysis on a corrosion mechanism for a metal material in a flow-induced corrosion environment.

Description

technical field [0001] The invention belongs to the field of electrochemical corrosion measurement, in particular to an electrochemical test experimental device for metal dynamic corrosion. Background technique [0002] Metal corrosion can be divided into several types such as electrochemical corrosion, chemical corrosion and biological corrosion. Among them, electrochemical corrosion is the most important research object in the field of anti-corrosion, which refers to the corrosion caused by the formation of batteries of metals in aqueous solution. Electrochemical corrosion can be divided into static corrosion and dynamic corrosion. In general corrosion experiments, we generally conduct static corrosion experiments, and rarely conduct related dynamic corrosion experiments. The dynamic corrosion experiments are closer to our actual living conditions. Dynamic corrosion experiments can well simulate the corrosion conditions encountered by ships sailing in the ocean. Contents...

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Problems solved by technology

[0003] Aiming at the inability of static corrosion experiments to fully imitate the corrosion conditions encountered by ships navigating in the ocean environment, the present invention provides an experimental device with simple technology that can roughly simulate the corrosion conditions encountered by ships navigating in the ocean environment, and solves the problem of current corrosion problems. There are problems in the measurement of electrochemical corrosion in the existing technology, such as the inability to perform real-time electrochemical corrosion measurement of metal materials in the dynamic corrosion solution

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