Corrosion product film wear property and corrosion electro-chemistry test device

Abstract

The invention relates to a device for testing abrasion property and corrosion electrochemistry of a corrosion product film, and belongs to the technical field of corrosion simulation experiment and electrochemistry test. The device consists of main parts such as an electric motor, a sealing cover, a rotary disc, a friction block, a sample table, a three-electrode electrochemistry test system, an external electrochemistry test instrument, a thermostatic water bath, and the like; and the rotary friction block of the rotary disc abrades a sample, an electrochemistry test adopts a three-electrode system, and the electrochemistry sample as a working electrode, a platinum wire as a reference electrode surrounding the periphery of the electrochemistry sample and a saturated calomel electrode to form the three-electrode system. The device can measure the abrasion resistant property of the formed corrosion product film, and simultaneously measure electrochemical parameters for the samples covered by the corrosion product film during abrasion to obtain electrochemical parameter values at different time of abrasion of the corrosion product film.

Description

technical field [0001] The invention belongs to the technical field of corrosion simulation experiments and electrochemical testing, and in particular provides an electrochemical testing device for corrosion product films under wear conditions. It is suitable for testing the electrochemical parameters of corrosion products formed in different corrosive environments during the wear process, and can measure the wear resistance of corrosion product films. In addition, the device can realize the simulation of different corrosion environments. Background technique [0002] The complete and dense corrosion product film can slow down corrosion and protect the base metal. However, in actual use, the corrosion product film on the surface of the base metal is often subject to wear and tear, and it is easy to thin or even crack, which makes the base metal corrode faster. Increase, such as truck compartments, bridge decks, ship decks, inner walls of pipes, etc. The wear performance of...

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Problems solved by technology

In addition, there are simultaneous measurement devices for corrosion and wear (Wang Antai, Tao Lin, Yang Yanyi, a simultaneous measurement device for corrosion and wear, State Intellectual Property Office, patent number: 87214788), and dynamic measurement devices for the interaction between corrosion and wear (Huang Weijiu, Liu Ming, Li Zhaofeng, A dynamic measurement device for the interaction between corrosion and wear, State Intellectual Property Office, Patent No.: 200620111395.3), etc., but these are all measurements of the corrosion and wear performance of the steel substrate, lacking the ability to simultaneously measure different corrosion environments A test device for the wear performance and electrochemical behavior of the formed corrosion product film, which limits the understanding of the wear resistance of the corrosion product film and the influence of the corrosion product film on the electrochemical reaction process in wear

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