WO2016106523A1 - Procédé de traitement de passivation de chrome /aluminium trivalents et son application - Google Patents

Procédé de traitement de passivation de chrome /aluminium trivalents et son application Download PDF

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Publication number
WO2016106523A1
WO2016106523A1 PCT/CN2014/095430 CN2014095430W WO2016106523A1 WO 2016106523 A1 WO2016106523 A1 WO 2016106523A1 CN 2014095430 W CN2014095430 W CN 2014095430W WO 2016106523 A1 WO2016106523 A1 WO 2016106523A1
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WO
WIPO (PCT)
Prior art keywords
aluminum
trivalent chromium
treatment process
chromium
passivation
Prior art date
Application number
PCT/CN2014/095430
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English (en)
Chinese (zh)
Inventor
刘国平
Original Assignee
深圳市恒兆智科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市恒兆智科技有限公司 filed Critical 深圳市恒兆智科技有限公司
Priority to PCT/CN2014/095430 priority Critical patent/WO2016106523A1/fr
Publication of WO2016106523A1 publication Critical patent/WO2016106523A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/78—Pretreatment of the material to be coated
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/12—Light metals
    • C23G1/125—Light metals aluminium
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2222/00—Aspects relating to chemical surface treatment of metallic material by reaction of the surface with a reactive medium
    • C23C2222/10—Use of solutions containing trivalent chromium but free of hexavalent chromium

Definitions

  • the invention relates to the technical field of metal surface treatment, in particular to a trivalent chromium-aluminum passivation treatment process and an application thereof.
  • Metal surfaces are usually treated to improve surface properties or appearance.
  • the surface treatment of aluminum and its alloys goes deep into all walks of life. Passivation of the surface of aluminum and its alloys is a relatively common treatment process.
  • the existing passivation treatment process is: degreasing ⁇ water washing ⁇ water washing ⁇ passivation ⁇ water washing ⁇ water washing ⁇ drying.
  • This treatment process has the following disadvantages: the oil consumption is large, the bath liquid is easy to age, the surface of the aluminum material is easy to produce black ash, the surface is not adjusted, the passivation is affected, and the adhesion of the passivation film is poor.
  • a trivalent chromium-aluminum passivation treatment process for aluminum pre-treatment or aluminum finished product treatment which comprises the steps of: de-oiling the surface of the aluminum material with alumina acid, removing water, washing, light, washing, The surface of the aluminum material is treated with a trivalent chromium-aluminum passivating agent to form a passivation layer, washed with water, dried, and a passivation film is formed on the surface of the aluminum.
  • the treatment is carried out by a trivalent chromium-aluminum passivation treatment process as described above to obtain an aluminum or aluminum product.
  • the above-mentioned trivalent chromium-aluminum passivation treatment process adopts trivalent chromium to passivate the aluminum surface, and is suitable for forming a passivation film on the surface of the aluminum or aluminum alloy part before painting, so that the coating layer during coating is firmly bonded and durable. , not easy to fall off; or the final treatment of the aluminum finished product to form a passivation protective film.
  • the formed passivation film is highly resistant to corrosion, especially acid and alkali corrosion.
  • the process uses trivalent chromium instead of Cr 6+ ions, which is safer and more environmentally friendly.
  • the treated waste liquid is easy to handle, and the black ash on the surface of the aluminum material can be eliminated after the light treatment, and the passivation film formed later has stronger adhesion. After the process, the aluminum material or the aluminum product has a bright appearance.
  • FIG. 1 is a photograph of a product after treatment of a trivalent chromium-aluminum passivation treatment process according to a second embodiment of the present invention.
  • Figure 2 is a photograph of the product after the light treatment in Comparative Example 5.
  • Figure 3 is a photo of the product without light treatment.
  • Embodiments of the present invention provide a trivalent chromium-aluminum passivation treatment process for pre-coating aluminum processing or aluminum finished product processing, which includes the following steps:
  • the aluminate is dehydrated to include the following components in a mass ratio: 0.5-1.5% hydrofluoric acid, 0-1% Sulfuric acid, 0-0.5% phosphoric acid, 0.05-0.15% surfactant and balance water.
  • the aluminolysis is preferably selected from the following components in a mass ratio: 0.8-1.2% hydrofluoric acid, 0.6-0.8% sulfuric acid, 0.3-0.5% phosphoric acid, 0.1-0.12% surfactant and balance water.
  • the content of the hydrofluoric acid raw material (ie, the concentration of the solute in the hydrofluoric acid raw material, the same below) is 55wt%
  • the content of sulfuric acid raw material is 98 wt%
  • the content of phosphoric acid raw material is 85wt%
  • the content of surfactant raw material is above 98%
  • the surfactant is preferably nonylphenol ethoxylate NP-9. , TX-9, TX-10 or NP-10.
  • the degreasing and descaling process is carried out by soaking or spraying aluminum, and the soaking treatment time is preferably 3-15 minutes, more preferably 3-10.
  • the spray treatment time is preferably from 1 to 7 minutes, more preferably from 2 to 5 minutes.
  • the aluminum acid stripping of the present embodiment can be applied to the soaking of various aluminum or aluminum alloy profiles or aluminum finished products, aluminum products, etc., and the aluminum acid stripping is an acidic degreasing agent which is compounded by various surfactants and has Extremely strong decontamination, dispersion, emulsification and solubilization. During the treatment, the decontamination is thorough and rapid, and the aluminum or aluminum parts will not be over-etched. (blackening) phenomenon, production is safe and reliable.
  • the embodiment adds a water washing process before degreasing, which can wash away most of the aluminum chips and some dirt generated during the processing of the aluminum material, thereby reducing the consumption and pollution of the degreasing tank and the degreasing tank. Then, the surface impurities of the degreasing and descaling are washed away with water.
  • Step S02 is a light-emitting process, and the light-removing process in the embodiment can effectively remove the black ash generated during degreasing, and the cleanliness is up to 99.9%
  • the surface of the aluminum alloy can be adjusted to be flat, which effectively ensures the passivation rate and the firmness of the passivation. After the light is washed, it can be washed with hot water. It can ensure that the aluminum material is cleaned more cleanly and dried more quickly. It avoids some high-demand aluminum materials that are not reoxidized in time due to drying. Through the light-emitting treatment, the dust on the surface of the material can be quickly removed, the workpiece can be restored to the original color, and the adhesion of the passivation film can be improved.
  • the light-emitting agent comprises the following components in a mass ratio: 5-8% nitric acid, 0-2% sulfuric acid, 1-2% Hydrochloric acid and the balance of water.
  • the content of nitric acid raw material is 68%
  • the content of sulfuric acid raw material is 98%
  • the content of hydrochloric acid raw material is 33%.
  • the light treatment time is 30-60 seconds, and the total acidity of the light-emitting agent is controlled at 50-200pt range.
  • the immersion treatment time with the light-emitting agent is preferably 0.5 to 2 minutes, more preferably 1-2 minutes, and the spray treatment time is preferably 0.5-1 minute.
  • the trivalent chromium aluminum passivating agent preferably comprises the following components in a mass ratio: chromium nitrate or chromium sulfate or chromium chloride 0.15-0.5%; potassium fluorotitanate 0.03-0.07%, ammonium hydrogen fluoride 0.01-0.03%; citric acid 0.1-0.3%, water balance.
  • the trivalent chromium aluminum passivating agent comprises the following components in a mass ratio: chromium nitrate or chromium sulfate or chromium chloride 0.15-0.5% , potassium fluorotitanate 0.03-0.07%, ammonium hydrogen fluoride 0.01-0.03%, citric acid 0.1-0.3%, water balance.
  • the mass percentage of each component is: chromium nitrate or chromium sulfate or chromium chloride 0.2-0.3%, potassium fluorotitanate 0.04-0.06%, ammonium hydrogen fluoride 0.02-0.03%, citric acid 0.2-0.3% , the amount of water.
  • the passivation treatment is by soaking or spraying, and the soaking treatment time is preferably 1-5 minutes, more preferably 2-4, and the spraying treatment time is preferably 1-2 minutes.
  • the trivalent chromium aluminum passivating agent of the present embodiment is a trivalent chromium reagent, which is suitable for impregnation foaming and spray passivation of various aluminum alloy parts or aluminum finished products, and can form a yellow to blue layer on the surface of the material.
  • a corrosion-resistant passivation layer that does not contain Cr 6+ ions to provide a coating finish or to form a passivation film on the finished surface.
  • the passivating agent is a safe and environmentally friendly reagent, and the waste liquid treated by the passivating agent is easy to handle and has low processing cost.
  • the total acidity of the trivalent chromium-aluminum passivator is controlled at 2-4 pt.
  • the drying is natural drying or drying, and the drying temperature is lower than 80 °C.
  • Industrial water can be used for washing, PH The value is about 6-7, and it is washed for 1-2 minutes at normal temperature.
  • the present invention also provides the use of the above process, that is, processing by using a trivalent chromium-aluminum passivation treatment process as described above to obtain an aluminum material or an aluminum product.
  • the coating has good adhesion and is easy to be coated, and the formed coating has strong corrosion resistance, especially acid and alkali corrosion resistance.
  • Neutral salt spray test conditions sodium chloride solution concentration 50 g / L, daily calibration concentration once PH value 6.5 6.5-7.2, nozzle pressure is 1.00 ⁇ 0.01 kgf / cm 2 , spray volume is 1.0 ⁇ 2.0 ml / 80cm 2 / h, collect for more than 16 hours, and find the average value, the temperature of the salt water tank is 35 ⁇ 1 °C, and the temperature of the laboratory is 35 ⁇ 1 °C.
  • the coating of the aluminum material after the above various examples and comparative examples was formed the coating was subjected to the GBT9286-1998 standard test and the grade was determined. The test results are shown in Table 1.
  • the surface of the aluminum that has been exposed to light is very bright, bright, and free of impurities
  • Figure 2 Although there is a light-emitting treatment, the light-emitting agent of the present invention is not used, and the black ash effect is poor, and the aluminum surface has residual ash and the color is gray.
  • image 3 It is a photo of aluminum that has not been exposed to light, and it can be seen that there is black ash on the surface of the untreated aluminum.

Abstract

L'invention concerne un procédé de traitement de passivation de chrome /aluminium trivalents comprenant les étapes suivantes, consistant à : utiliser un dégraissant acide pour éliminer la graisse et les incrustations oxydes de la surface d'un matériau d'aluminium, rincer à l'eau, éliminer les dépôts, rincer à l'eau puis utiliser un agent de passivation de chrome /aluminium trivalents pour traiter ladite surface puis rincer à l'eau, sécher et former un film de passivation sur ladite surface. L'invention concerne également un matériau d'aluminium ou un produit en alliage d'aluminium obtenu par le procédé de traitement.
PCT/CN2014/095430 2014-12-29 2014-12-29 Procédé de traitement de passivation de chrome /aluminium trivalents et son application WO2016106523A1 (fr)

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PCT/CN2014/095430 WO2016106523A1 (fr) 2014-12-29 2014-12-29 Procédé de traitement de passivation de chrome /aluminium trivalents et son application

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10799496B2 (en) 2018-07-13 2020-10-13 Alkermes Pharma Ireland Limited Naphthylenyl compounds for long-acting injectable compositions and related methods
CN113529063A (zh) * 2020-04-20 2021-10-22 深圳市海运通电子科技有限公司 一种耐高温的涂膜铝壳处理方法
CN113846332A (zh) * 2021-09-10 2021-12-28 大富科技(安徽)股份有限公司 铝制天线蚀刻面的处理方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002061174A1 (fr) * 2001-01-31 2002-08-08 Henkel Kommanditgesellschaft Auf Aktien Agent anticorrosion pour tole d'acier zinguee
CN1612952A (zh) * 2001-11-06 2005-05-04 美国海军部 阳极化铝的后处理
CN101109085A (zh) * 2006-07-21 2008-01-23 深圳市金信诺电缆技术有限公司 半刚同轴电缆外导体镀三元合金的方法
CN102066611A (zh) * 2008-04-25 2011-05-18 汉高股份及两合公司 用于处理镀锌钢的三价铬钝化剂
CN103276387A (zh) * 2013-05-20 2013-09-04 华南理工大学 一种在铝合金表面制备铈锰/钼多元复合转化膜的方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002061174A1 (fr) * 2001-01-31 2002-08-08 Henkel Kommanditgesellschaft Auf Aktien Agent anticorrosion pour tole d'acier zinguee
CN1612952A (zh) * 2001-11-06 2005-05-04 美国海军部 阳极化铝的后处理
CN101109085A (zh) * 2006-07-21 2008-01-23 深圳市金信诺电缆技术有限公司 半刚同轴电缆外导体镀三元合金的方法
CN102066611A (zh) * 2008-04-25 2011-05-18 汉高股份及两合公司 用于处理镀锌钢的三价铬钝化剂
CN103276387A (zh) * 2013-05-20 2013-09-04 华南理工大学 一种在铝合金表面制备铈锰/钼多元复合转化膜的方法

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
QIU, ZUOQUN.: "Achromatic Chemical Oxidization Process of Aluminium Foil", COLLECTED PAPERS OF THE TENTH ACADEMIC ANNUAL CONFERENCE OF TIANJIN ELECTROPLATING ENGINEERING SOCIETY, 31 December 2006 (2006-12-31), pages 111 *
ZHAO, YUCHUAN.: "Trivalent Chromium Passivation for Aluminium Alloy", ELECTROPLATING & POLLUTION CONTROL., vol. 30, no. 2, 31 March 2010 (2010-03-31), pages 47, ISSN: 1000-4742 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10799496B2 (en) 2018-07-13 2020-10-13 Alkermes Pharma Ireland Limited Naphthylenyl compounds for long-acting injectable compositions and related methods
CN113529063A (zh) * 2020-04-20 2021-10-22 深圳市海运通电子科技有限公司 一种耐高温的涂膜铝壳处理方法
CN113846332A (zh) * 2021-09-10 2021-12-28 大富科技(安徽)股份有限公司 铝制天线蚀刻面的处理方法

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