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A kind of green corrosion-resistant titanium-zirconium conversion liquid and its application

A conversion liquid, titanium zirconium technology, applied in the field of material science and surface, can solve problems such as environmental hazards, and achieve the effects of improved corrosion resistance, energy saving, and thick and dense film.

Active Publication Date: 2021-12-21
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems that the existing titanium-zirconium conversion film layer is relatively thin, the organic and inorganic corrosion inhibitors added in the titanium-zirconium conversion solution only play a role of corrosion inhibition on the conversion film and the added accelerator is harmful to the environment, the present invention The purpose is to use environmentally friendly green plants to extract corrosion inhibitors as additives to titanium-zirconium conversion fluids to prepare titanium-zirconium conversion fluids with excellent corrosion resistance

Method used

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  • A kind of green corrosion-resistant titanium-zirconium conversion liquid and its application
  • A kind of green corrosion-resistant titanium-zirconium conversion liquid and its application
  • A kind of green corrosion-resistant titanium-zirconium conversion liquid and its application

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Effect test

Embodiment 1

[0039] (1) According to 6g / L hexafluorotitanic acid, 0.8g / L hexafluorozirconic acid, 0.1g / L basil leaf extraction corrosion inhibitor, 2g / L sodium hydroxide, add deionized water to the balance, Mix and sonicate for 60 minutes, and the ultrasonic power is 200w, to obtain the prepared titanium-zirconium conversion liquid. Mix 50g of dried basil leaves with 1L of deionized water, heat up to 100°C, stir and reflux at a speed of 200r / min for 5h, take it out, cool to room temperature, and centrifuge at a speed of 8000r / min to obtain the basil leaf extract, then freeze it Use after drying;

[0040] (2) The application of the green corrosion-resistant titanium-zirconium conversion solution in the conversion treatment of metal materials. The aluminum alloy 6063 (50×50×2mm) was polished with 500 mesh, 800 mesh, and 1000 mesh sandpaper in sequence, and then washed with deionized water. After being treated with 50g / L sodium hydroxide, 8g / L sodium carbonate, and deionized water for 3 minu...

Embodiment 2

[0043] (1) According to 15g / L sodium fluorotitanate, 1.5g / L potassium fluorozirconate, 0.05g / L plant extract corrosion inhibitor, 4g / L ammonia water, add deionized water to the balance, mix and ultrasonically for 60min , the ultrasonic power is 120w, and the prepared titanium-zirconium conversion solution is obtained. Mix 25g of dried basil leaves with 0.6L of deionized water and heat up to 70°C, stir and reflux at a speed of 200r / min for 10h, take it out, cool to room temperature, and centrifuge at a speed of 5000r / min to obtain the basil leaf extract, which is then Use after freeze-drying;

[0044] (2) The application of the green corrosion-resistant titanium-zirconium conversion solution in the conversion treatment of metal materials. The magnesium alloy (50×50×2mm) was polished with 500 mesh, 800 mesh, and 1000 mesh sandpaper in turn, and then washed with deionized water. 50g / L sodium hydroxide, 10g / L sodium carbonate, and the balance is deionized water with alkaline wash...

Embodiment 3

[0047] (1) According to 5g / L hexafluorotitanic acid, 1.0g / L hexafluorozirconic acid, 0.1g / L basil leaf extract corrosion inhibitor, 5g / L ammonia water, add deionized water to the balance, mix ultrasonic After 30 minutes, the ultrasonic power was 150w, and the prepared titanium-zirconium conversion liquid was obtained. Mix 30g of dry basil leaves with 1.2L of deionized water and heat up to 60°C, stir and reflux at a speed of 150r / min for 10h, take it out and cool to room temperature, and then centrifuge at a speed of 7000r / min to obtain the basil leaf extract. It is used after freeze-drying;

[0048] (2) The application of green corrosion-resistant titanium-zirconium conversion solution in the conversion treatment of metal materials, Q235 (50×50×2mm) was polished once with 500-mesh, 800-mesh, and 1000-mesh sandpaper, washed with deionized water, and washed with 25g / L sodium hydroxide, 10g / L sodium carbonate, and the balance is deionized water. The pickling solution prepared ...

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Abstract

The invention discloses a green corrosion-resistant titanium-zirconium conversion solution and application thereof. According to the content of each component in the titanium-zirconium conversion liquid, the raw materials of the green corrosion-resistant titanium-zirconium conversion liquid are composed of: titanium source 1-20g / L, zirconium source 0.1-15g / L, basil leaf extract 0.05-5g / L L, pH regulator 2-8g / L, deionized water; the titanium source is fluorotitanic acid or fluorotitanate; the zirconium source is fluorozirconic acid or fluorozirconate. The present invention uses green plant basil leaves to extract corrosion inhibitors as an added component of the titanium-zirconium conversion solution. On the one hand, the basil leaf plant extraction corrosion inhibitors can enhance the corrosion resistance of titanium-zirconium conversion coatings, and on the other hand, can promote the corrosion resistance of titanium-zirconium conversion coatings. The conversion process enables the titanium-zirconium conversion coating to completely cover the surface of the aluminum alloy, forming a uniform and dense film layer. Green plant extraction corrosion inhibitor has a wide range of raw materials, low production cost, friendly to the environment and harmless to human health.

Description

technical field [0001] The invention relates to a titanium-zirconium conversion liquid, in particular to a green corrosion-resistant titanium-zirconium conversion liquid and its application, belonging to the fields of material science and surface technology. Background technique [0002] Metals are obtained by metal minerals (oxides, sulfides, etc.) through metal smelting to absorb energy, so metals are in a thermodynamically unstable state, and have a tendency to interact with the surrounding medium and transform into metal ions, resulting in metal corrosion. The difference is the driving force behind the corrosion reaction. Corrosion releases energy. Corrosion is a spontaneous process that causes irreversible damage to metals. Metal materials are widely used in various fields such as national defense, transportation, and construction. The annual loss caused by metal corrosion is the sum of other losses caused by natural damage. In addition, metal corrosion will also bring ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/34C23C22/60C23C22/68C23F11/173
CPCC23C22/34C23C22/60C23C22/68C23F11/173
Inventor 张心亚田玉琴王健强
Owner SOUTH CHINA UNIV OF TECH
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