Electrolytic bath device and method for evaluation of metal and coating film corrosion resistance

An evaluation method, electrolytic cell technology, applied in the direction of measuring devices, weather resistance/light resistance/corrosion resistance, instruments, etc., can solve the problem of fast, convenient, selective corrosion, repeated use, Easy to disassemble, quick evaluation, unable to meet the needs of quick evaluation, large amount of corrosive medium, etc., to achieve the effect of facilitating test analysis, rapid evaluation of protection performance, and multiple test conditions

CN104749093AInactive Publication Date: 2015-07-01GUOBIAO BEIJING TESTING & CERTIFICATION CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2015-07-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the technical field of a device for testing corrosion resistant electrochemical parameters of a metal material and a surface coating film and a method for corrosion resistance fast evaluation, and especially relates to an electrolytic bath device and method for evaluation of metal and coating film corrosion resistance. The device comprises a tightening nut, a liquid injection pipe, a corrosion electrolytic bath, a fixing column and a contact gasket. The method comprises the following steps of arranging a processed metal material and a film-coated sample below the device, selecting a corrosion area, tightly pressing the surface of the sample by a test device, injecting a certain volume of a corrosion solution into a corrosion electrolytic bath by a solution injection pipe so that loading of a metered volume of the corrosion medium to the sample is realized, and then carrying out corrosion electrochemical parameter measurement and corrosion resistance evaluation. The device and method have the advantages of loading convenience, operation simpleness, recycle, selective corrosion, observation convenience and wide application range.
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Description

technical field

[0001] The invention belongs to the technical field of a corrosion-resistant electrochemical parameter testing device for metal materials and surface coatings and a rapid evaluation method for corrosion resistance, and in particular relates to an electrolytic cell device and method for evaluating the corrosion resistance of metals and coatings. Background technique

[0002] The corrosion resistance of metal materials and their coatings is an important parameter to study the service life of the materials and their coatings in the environment. At present, the equipment used to test the corrosion resistance of metal materials and their coatings has the characteristics of large volume, high price, inconvenient movement, large amount of corrosive medium, and environmental pollution. The experimental requirements for the evaluation. A portable rapid measuring device for corrosion resistance of coated metals has been developed in China, but because it uses a three-...

Examples

Embodiment 1

[0035] An electrolytic cell device for evaluating the corrosion resistance of metals and coatings, which can quickly evaluate the corrosion resistance electrochemical parameters of metal materials and coatings and their corrosion resistance, such as figure 1 As shown, the device includes a jack nut 1 , a liquid injection pipe 2 , a corrosion electrolytic cell 3 , a fixing column 4 and a contact washer 5 . The jacking nut 1 is a cylindrical structure processed by corrosion-resistant nylon material, and there is a through liquid injection pipe hole 101 near the middle, as figure 2 shown. The liquid injection pipe 2 is a circular structure processed from corrosion-resistant plastic.