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 measuring devices, electrochemical variables of materials, instruments, etc., can solve the problems of long test period, rough evaluation, heavy equipment, etc.
Inactive Publication Date: 2011-07-27
湖南骁慈商贸有限公司
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[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
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[0026] 64 wire electrodes of Fe (or Cu, Al) base materials with a diameter of 0.9mm are evenly arranged at a distance of 2.5mm, and are insulated from each other by casting epoxy resin to make a test probe; the auxiliary electrode material is the same as the test electrode. During the test, grind the working surface of the test probe and the auxiliary electrode, clean and dry them with petroleum ether, absolute ethanol, etc., put them into the anti-rust oil at a fixed distance, and connect the other end to the tester, such as figure 1 shown. Tested after 10 minutes of deposition, the resistance distribution of 64 electrodes can be obtained (R i ≥1×10 8 Ω). Calculate m, ,δ. Compare m first, the smaller one has better anti-rust performance; if m is the same, compare The larger one has better anti-rust performance; if m, In the same way, comparing δ, the smaller one has better anti-rust performance.
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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 timescompared 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 multi-electrode test probe direct immersion rapid evaluation method for the antirust performance of soft film antirust oil, and belongs to the technical field of water-insoluble antirust oil. Background technique [0002] The antirust performance test of antirust oil currently has 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. The evaluation speed of the latter is 2 orders of magnitude higher than that of the former, but it still needs to be oiled and drained on the multi-electrode test probe to prepare the sample, which takes more than 24 hours, and then the resistance of each electrode of the probe is tested in 5% NaCl, and it takes a long time Re-measure the ultrasonic link, and evaluate the order of the anti-rust performance of different anti-rust o...
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IPC IPC(8): G01N27/26G01N17/02
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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