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Multi-electrode test probe direct dipping fast assessing method for anti-rust performance of soft membrane antirust oil

A technology of anti-rust performance and anti-rust oil, applied in the direction of material electrochemical variables, material inspection products, etc., can solve the problems of rough evaluation, long test period, heavy equipment, etc.

Inactive Publication Date: 2008-10-29
湖南骁慈商贸有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Anti-rust performance test of anti-rust oil, currently there are traditional natural corrosion methods such as ISO damp heat and salt spray, which have defects such as long test period, heavy equipment, and rough evaluation; there is also JB / T10528 multi-electrode electrochemical method

Method used

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  • Multi-electrode test probe direct dipping fast assessing method for anti-rust performance of soft membrane antirust oil
  • Multi-electrode test probe direct dipping fast assessing method for anti-rust performance of soft membrane antirust oil
  • Multi-electrode test probe direct dipping fast assessing method for anti-rust performance of soft membrane antirust oil

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Embodiment

[0025] 64 Fe (or Cu, Al)-based metal wire electrodes with a diameter of 0.9mm are uniformly arranged at 2.5mm intervals, and they are molded with epoxy resin to insulate each other to make a test probe; the auxiliary electrode material is the same as the test electrode. During the test, the working surface of the test probe and auxiliary electrode is ground, cleaned and dried by petroleum oil, absolute ethanol, etc., and then placed in the anti-rust oil at regular intervals, and the other end is connected with the tester, such as figure 1 Shown. After 10 minutes of deposition, the resistance distribution of 64 electrodes can be obtained (R i ≥1×10 8 Ω). Calculate m, R, and δ with formulas (1), (2), and (3). First compare m, the smaller one is better; if m is the same, compare R, the larger one is better; if m and R are the same, compare δ, the smaller one is better. The electrode and auxiliary electrode of the test probe are all Fe-based electrodes

[0026] 1. Soft film anti-rust ...

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Abstract

The invention relates to a multi-electrode test probe direct-immersion fast evaluating method for rust resistance performance of soft coating rust resistance oil; the method comprises the following steps: the working surfaces of the test probes consisting of N electrodes with mutual insulation and an auxiliary electrode are ground and washed, and then are placed into the soft coating rust resistance oil oppositely and directly in a certain distance; a power supply, a test electrode, the rust resistance oil and the auxiliary electrode form a corrosion loop which can carry out the test of resistance of the electrode; the resistance value is the sum of polarization resistance of an absorption film on the test electrode and the resistance of the solution of the rust resistance oil; under the condition that the polarization resistance is larger than the resistance of the solution, the evaluation parameter of the rust resistance oil can be calculated according to the distribution of the resistance of the electrode of the test probe so as to evaluate the quality order of the rust resistance performance of the rust resistance oil; the evaluating speed can be improved by more than 70 times compared with the JB / T10528 method, and can be improved by 3 orders of magnitude compared with the traditional natural corrosion methods of ISO moist heat and salt fog, etc.

Description

Technical field [0001] The invention discloses a direct immersion and quick evaluation method for the rust-proof performance of a soft film rust-proof oil with a multi-electrode test probe, belonging to the technical field of water-insoluble rust-proof oil. Background technique [0002] The anti-rust performance test of anti-rust oil currently has traditional natural corrosion methods such as ISO damp heat and salt spray, which have defects such as long test cycle, heavy equipment, rough evaluation, and JB / T10528 multi-electrode electrochemical method. The evaluation speed of the latter is 2 orders of magnitude higher than that of the former. However, it is still necessary to apply oil on the multi-electrode test probe and drain the sample, which takes more than 24 hours, and then test the resistance of each electrode of the probe in 5% NaCl, and need to go through The ultrasonic link is measured again, and the order of the anti-rust performance of different anti-rust oils is eva...

Claims

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Application Information

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IPC IPC(8): G01N27/27G01N33/28
Inventor 靳九成陈迪平黄桂芳王镇道靳浩
Owner 湖南骁慈商贸有限公司
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