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Corrosion prevention inhibitor for white copper B10
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A corrosion inhibitor and anti-corrosion technology, applied in the field of corrosion and protection of metal materials to achieve good corrosion inhibition effect
Inactive Publication Date: 2010-01-20
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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Problems solved by technology
However, there are few studies on PESA on copper and its copper alloys, and on the compounding of PESA with other reagents to form efficient and environmentally friendlywater treatment agents.
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[0026] The solute is PESA, the solvent is deionized water, and the final concentration is 0 mg / L, 2 mg / L, 5 mg / L, 10 mg / L, 15 mg / L, 20 mg / L of PESA single compound corrosion inhibitor .
[0027] Corrosion Inhibition Effect of PESA Single Compound Corrosion Inhibitor on Cupronickel B10 in 3% NaCl Solution
[0028] In the measurement of AC impedance, the blank means that 3% NaCl solution is used as the medium, and the addition amount of corrosion inhibitor is 0 mg / L.
[0029] attached figure 1 It is the Nyquist diagram measured after the cupronickel B10 electrode was soaked in 3% NaCl solution containing different concentrations of PESA for 0.5h, in which curve 1, curve 2, curve 3, curve 4, curve 5 and curve 6 respectively represent that PESA is 0 mg / Nyquist plots at L, 2 mg / L, 5 mg / L, 10 mg / L, 15 mg / L, 20 mg / L.
[0030] The resistance value is used to judge the corrosion inhibition performance. The higher the resista...
Embodiment 2
[0041] A kind of copper-nickel B10 corrosion inhibitor
[0042] The solute is polyepoxysuccinic acid and Na 2 SiO 3 , the solvent is deionized water, and 6 groups of cupronickel B10 anti-corrosion and corrosion inhibitors are configured. The concentration of PESA in each group of copper-nickel B10 corrosion inhibitors was 15 mg / L, while Na 2 SiO 3 The concentrations were 0 mg / L, 10 mg / L, 20 mg / L, 30 mg / L, 40 mg / L, 50 mg / L.
[0044] attached image 3 is to add different concentrations of PESA and Na in 3% NaCl solution 2 SiO 3The obtained Nyquist diagram, wherein curve 1 represents blank, and curve 2, curve 3, curve 4, curve 5, curve 6, curve 7, and curve 8 are 15 mg / L PESA and Na 2 SiO 3 Nyquist plots at concentrations of 0 mg / L, 10 mg / L, 20 mg / L, 30 mg / L, 40 mg / L and 50 mg / L.
[0045] From attached image 3 It can be seen that 15mg / L ...
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Abstract
The invention discloses a corrosion prevention inhibitor for white copper B10, belonging to the technical field of corrosion and protection of metal materials. The solute of the inhibitor is formed by polyepoxy succinic acid (PESA) and Na2SiO3 based on the mass ratio of 0-30 to 0-50; the solvent is deionized water; the final inhibitor concentration is 10-80mg / L. When the inhibitor concentration is 15mg / L PESA+40mg / L Na2SiO3, the corrosion potential obviously shifts to the positive direction relative to the blank test, and the corrosion current density obviously decreases at the same time and is 4.637mu A / cm2, which greatly decreases relative to the corrosion current density of 21.43mu A / cm2 in the blank test; the inhibition rate reaches 78.36%. The corrosion prevention inhibitor for white copper B10 of the invention does no harm to the environment and has good inhibition effect on corrosion prevention of the white copper B10 in the system after being used by combination.
Description
technical field [0001] The invention relates to a cupronickel B10 anti-corrosion and corrosion inhibitor, which belongs to the technical field of metal material corrosion and protection. Background technique [0002] At present, due to the intensification of metal corrosion, more and more corrosion inhibitors are used. Especially for the research on the corrosion inhibition of cupronickel B10, some corrosion inhibitors currently used will more or less cause harm to the environment, which is not conducive to sustainable development. With the development of the national economy and society, water treatment technology for the purpose of resource conservation and environmental protection has developed rapidly, and the application of corrosion inhibitors is very common. The corrosion inhibitors currently studied are mainly organic substances containing N, S, O or other functional groups, such as BTA, which has been used in industry for several years. However, a serious disadvan...
Claims
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