On-line monitoring method for failure state of metal and protection layer inter face

Abstract

This invention relates to the metal and the protector contact surface mode of failure on-line monitor method, in the design or the manufacture mechanical device metal base corrosion sensitive spot, prefabricated monitor contact surface corrosion change poking head in, uses the same material which cuts directly down from the equipment home position is the main body, after processes probe in to inlay the mechanical device metal base again the home position, probe in with the equipment metal base is the integrated union, states probe in to pass through the equipment wall, its rear part reserves in hardware exterior has the connecting lead the receptacle, when needs to gather the contact surface information, Will state the receptacle and the electrochemistry workstation with the wire and so on can gather electrochemistry data the and so on impedance spectrum monitor terminal device connects, and will use the CR transmission line model analysis electrochemistry impedance spectrum. The monitor can obtain in advance information, the monitor result analysis has the versatility, the uniformity and the objectivity: Increased the result reliable degree.

Description

【Technical field】 [0001] The present invention relates to a method for on-line monitoring of the failure state of the metal-protective layer interface, in particular to a method for on-line monitoring of the state change of the metal-protective layer interface with integrated application, same state, and built-in probes for collecting electrochemical information such as impedance spectra method. 【Background technique】 [0002] Explanation of terms: The CR transmission line model refers specifically to a transmission line type equivalent circuit model that only includes capacitance C and resistance R. [0003] The losses caused by corrosion of industrial equipment are staggering. According to the survey, the global annual corrosion loss is about 700 billion US dollars, accounting for about 2% to 4% of the GNP of various countries. According to the statistics of Battele Laboratory, the annual corrosion loss of the United States is about 300 billion US dollars, of which the lo...

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Problems solved by technology

[0014] In order to overcome the disadvantages of indirect measurement and lack of non-destructive, direct, and advanced prediction of the state change trend of the metal substrate and protective layer interface in the mechanical device, the present invention provides a mechanical device that can be used for online monitoring of corrosive environments. On-line monitoring method of metal and protective layer interface failure state

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