Method for continuously monitoring metal material corrosion depth
A corrosion depth, metal material technology, applied in the analysis of materials, electrical/magnetic depth measurement, weather resistance/light resistance/corrosion resistance, etc. Corrosion data and other issues in the middle of the sample, to achieve the effect of great economic and social value and broad application prospects
Inactive Publication Date: 2009-10-07
NANCHANG HANGKONG UNIVERSITY
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Problems solved by technology
The current burial test method cannot obtain the intermediate data of the corrosion process, but when a batch of samples are buried and excavated in stages, only the superimposed data of the same type of material can be obtained, and the intermediate corrosion data of the same sample cannot be obtained, which is very important for the study of metals. Mechanisms and processes of soil corrosion and reinforced concrete corrosion are unfavorable
Due to the particularity of the physical and chemical properties of soil and concrete, many physical monitoring methods are powerless. Although electrochemical methods can obtain some data, they cannot be continuously monitored, and the correlation between the obtained data and the actual corrosion depth is very large.
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[0008] The materials used in the experiment are pure Fe, A3 steel, 45# steel, Ti6Al4V, NiAl alloy (Al content 5wt%), CuZn alloy (Zn content 32wt%),.
[0009] The sample size is: length 30mm, width 20mm, thickness 0.1-20mm.
[0010] Square resistance continuous measurement time interval: 1-10 5 seconds, the total time of the experiment is 0.1-720 hours.
[0011] In order to protect the probe and fixture from corrosion and improve the accuracy of the measurement, the surface of the sample is pretreated: grind with 1200# sandpaper, and then polish it to make the surface of the sample smooth. The surfaces and sides of the probes and fixtures that come into contact with the test are sealed with epoxy.
[0012] In order to verify the accuracy of the square resistance method in measuring the metal corrosion thickness, the mass of the sample before and after the experiment was measured, and the test corrosion depth obtained by the weight loss method was compared with the corrosion d...
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Abstract
A method for continuously monitoring the corrosion depth of metal materials. The measuring device is composed of a metal to be tested, a probe and its fixture, a wire, a square resistance measuring instrument, and a computer. By measuring the square resistance value of the metal, the corrosion depth of the metal at different corrosion times can be obtained. The present invention has the advantages of overcoming the shortcomings of conventional burial test methods and electrochemical methods for studying metal corrosion and reinforced concrete corrosion, filling the gaps in metal soil corrosion and reinforced concrete corrosion direct and continuous monitoring methods, and having broad application prospects. Significant economic and social value.
Description
technical field [0001] The invention relates to a method for detecting corrosion of metal materials, in particular to a method for continuously monitoring the corrosion depth of metal materials. Background technique [0002] At present at home and abroad, the direct and continuous monitoring methods of metal soil corrosion and reinforced concrete corrosion are basically blank. The current burial test method cannot obtain the intermediate data of the corrosion process, but when a batch of samples are buried and excavated in stages, only the superimposed data of the same type of material can be obtained, and the intermediate corrosion data of the same sample cannot be obtained, which is very important for the study of metals. The mechanisms and processes of soil corrosion and reinforced concrete corrosion are unfavorable. Due to the particularity of the physical and chemical properties of soil and concrete, many physical monitoring methods are powerless. Although electrochemi...
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IPC IPC(8): G01B7/26G01N17/00
Inventor 杜楠冯长杰赵晴赵德
Owner NANCHANG HANGKONG UNIVERSITY