WO2018006270A1 - Agent de revêtement par conversion d'aluminium sans chrome, matériau d'aluminium et procédé de traitement de revêtement - Google Patents

Agent de revêtement par conversion d'aluminium sans chrome, matériau d'aluminium et procédé de traitement de revêtement Download PDF

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Publication number
WO2018006270A1
WO2018006270A1 PCT/CN2016/088702 CN2016088702W WO2018006270A1 WO 2018006270 A1 WO2018006270 A1 WO 2018006270A1 CN 2016088702 W CN2016088702 W CN 2016088702W WO 2018006270 A1 WO2018006270 A1 WO 2018006270A1
Authority
WO
WIPO (PCT)
Prior art keywords
parts
chromium
aluminum
coating agent
film
Prior art date
Application number
PCT/CN2016/088702
Other languages
English (en)
Chinese (zh)
Inventor
王饶玲
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/CN2016/088702 priority Critical patent/WO2018006270A1/fr
Publication of WO2018006270A1 publication Critical patent/WO2018006270A1/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
    • C23C22/40—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 molybdates, tungstates or vanadates
    • C23C22/44—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 molybdates, tungstates or vanadates containing also fluorides or complex fluorides

Definitions

  • the present invention relates to the field of metal surface treatment technology, and in particular, to a chromium-free coating agent, an aluminum material, and a coating treatment method thereof.
  • the surface treatment technology of the workpiece is usually applied.
  • the surface treatment of steel, zinc, aluminum, iron and their alloys goes deep into all walks of life.
  • most workpieces require pre-treatment before surface treatment, for example, cleaning, decontamination and degreasing, and metalworking parts for certain applications require process passivation.
  • a chromium-free coating agent which is excellent in bonding ability, corrosion resistance and environmental protection, and an aluminum surface filming treatment method and an aluminum material obtained by a film treatment.
  • a chromium-free coating agent comprising 1000 parts by weight of the following components by weight: 10-20 parts of potassium fluorozirconate or sodium fluorozirconate, 5-10 parts of sodium molybdate, 5-10 parts Cobalt nitrate, 2-5 parts of ammonium fluoride, 5-10 parts of silica sol and 3-7 parts of nitric acid.
  • a method for processing a surface of an aluminum material comprising the steps of: preparing a chromium-free coating agent as described above; dissolving a chromium-free aluminum coating agent in water to form a film solution, and controlling the quality of the film solution; The ratio is 2-8%, the pH value is controlled to 2-6, and the aluminum material is immersed in the film solution after the predetermined daytime treatment.
  • the above-mentioned chromium-free aluminum coating agent forms an aluminum film on a metal surface, has good bonding ability with a paint film and has strong corrosion resistance.
  • the chromium-free aluminum film agent is a better alternative to the conventional chromium-containing film agent, and avoids Heavy metals such as chromium produce environmental pollution and are a new type of material that is energy-saving, environmentally friendly and non-polluting.
  • the embodiment of the present invention provides a chromium-free aluminum coating agent, in terms of 1000 parts by weight, the following parts by weight, including 10-20 parts of potassium fluorozirconate or sodium fluorozirconate, 5-10 parts of molybdic acid Sodium, 5-10 parts of cobalt nitrate, 2-5 parts of ammonium fluoride, 5-10 parts of silica sol and 3-7 parts of nitric acid.
  • the potassium fluorozirconate or sodium fluorozirconate is used in an amount of 12 to 18 parts by weight.
  • the parts by weight of the sodium molybdate are 6-8 parts
  • the parts by weight of the cobalt nitrate are 6-8 parts
  • the parts by weight of the ammonium fluoride are 2-4 parts
  • the silicon The sol is 2 to 5 parts by weight
  • the nitric acid is 4 to 6 parts by weight.
  • the chrome-free aluminum coating agent has a pH of 2.0 to 6.0, and the chrome-free aluminum coating agent has a mass ratio of 2-8% using a ruthenium ratio.
  • An embodiment of the present invention further provides a method for treating a surface of an aluminum material, comprising the steps of: preparing a chromium-free aluminum film agent as described above; dissolving the chromium-free aluminum film agent in water to form a film solution, The mass ratio of the film solution is controlled to be 2-8%, and the enthalpy value is controlled to 2.0-6.0; the aluminum material is immersed in the film solution, and after a predetermined daytime treatment, the aluminum material is washed with water and dried.
  • the treated aluminum material is sprayed or impregnated with aluminum, the spray or impregnation is between 2 and 5 minutes, and the spray pressure is 0.8-1.2 kgf/cm 2 .
  • a chromium-free aluminum coating agent should be added to the workpiece of 100 m 2 /L. If the pH is out of balance, add the ammonia water and the chrome-free coating to set the P H value to the above working range.
  • the chromium-free aluminum coating agent in the embodiment of the invention is a zirconium salt treatment agent, is non-phosphorus, has no heavy metal, and is low-solid, suitable for Surface treatment before steel, zinc and aluminum coating can replace phosphating solution and chromizing agent.
  • the chrome-free aluminum coating forms a yellow aluminum film on the surface of the metal, and has excellent bonding ability and corrosion resistance to the painted film.
  • the aluminum film treatment film can be matched with various types of coatings.
  • Embodiments of the present invention also provide an aluminum material which is treated by a surface treatment method of an aluminum material as described above to form a film on the surface of the aluminum material.
  • the ingredients were mixed in the following parts by weight (total amount 1000 parts by weight): 10 parts of sodium fluorozirconate, 5 parts of sodium molybdate, 5 parts of cobalt nitrate, 2 parts of ammonium fluoride, 5 parts of silica sol and 3 Parts of nitric acid and the balance of water.
  • Treatment method preparing the chromium-free aluminum film agent as described above; dissolving the chromium-free aluminum film agent in water to form a film solution, controlling the mass ratio of the film solution to 4%, and controlling the pH value to 3 -4;
  • the aluminum material is immersed in the film solution, and after a predetermined daytime treatment, the aluminum material is washed with water and dried. The surface is cleaned of aluminum. After 3 minutes of treatment, the aluminum is washed and dried.
  • the ingredients were mixed in the following parts by weight (total amount 1000 parts by weight): 12 parts sodium fluorozirconate, 6 parts sodium molybdate, 6 parts cobalt nitrate, 3 parts ammonium fluoride, 6 parts silica sol and 4 Parts of nitric acid and the balance of water.
  • Treatment method preparing the chromium-free aluminum film agent as described above; dissolving the chromium-free aluminum film agent in water to form a film solution, controlling the mass ratio of the film solution to 5%, and controlling the PH value to 3 -4;
  • the aluminum material is immersed in the film solution, and after a predetermined daytime treatment, the aluminum material is washed with water and dried. The surface is cleaned of aluminum. After 4 minutes of treatment, the aluminum is washed and dried.
  • Treatment method preparing the chromium-free aluminum film agent as described above; dissolving the chromium-free aluminum film agent in water to form a film solution, controlling the mass ratio of the film solution to 5%, and controlling the PH value to 3 -4; The aluminum material is immersed in the film solution, and after a predetermined daytime treatment, the aluminum material is washed with water and dried. The surface is cleaned of aluminum and after 4 minutes of treatment, the aluminum is washed and dried.
  • the ingredients are mixed in the following parts by weight (total amount 1000 parts by weight): 20 parts of sodium fluorozirconate, 10 parts of sodium molybdate, 10 parts of cobalt nitrate, 5 parts of ammonium fluoride, 10 parts of silica sol and 8 Parts of nitric acid and the balance of water.
  • Treatment method preparing the chromium-free aluminum film agent as described above; dissolving the chromium-free aluminum film agent in water to form a film solution, controlling the mass ratio of the film solution to 6%, and controlling the PH value to 3 -4; The aluminum material is immersed in the film solution, and after a predetermined daytime treatment, the aluminum material is washed with water and dried. Treatment surface clean aluminum

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  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)

Abstract

La présente invention concerne un agent de revêtement par conversion d'aluminium sans chrome, un matériau d'aluminium et un procédé de traitement de revêtement par conversion de surface. L'agent de revêtement par conversion comprend : de 10 à 20 parties d'un fluorozirconate de potassium ou d'un fluorozirconate de sodium, 5 à 10 parties d'un molybdate de sodium, 5 à 10 parties d'un nitrate de cobalt, 2 à 5 parties d'un fluorure d'ammonium, 5 à 10 parties d'un sol de silice et 3 à 7 parties d'un acide nitrique. L'agent de revêtement par conversion d'aluminium sans chrome forme un revêtement de traitement par conversion d'aluminium sur une surface métallique. Le revêtement de traitement par conversion d'aluminium se lie bien à un revêtement de peinture et il est hautement résistant à la corrosion.
PCT/CN2016/088702 2016-07-05 2016-07-05 Agent de revêtement par conversion d'aluminium sans chrome, matériau d'aluminium et procédé de traitement de revêtement WO2018006270A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/088702 WO2018006270A1 (fr) 2016-07-05 2016-07-05 Agent de revêtement par conversion d'aluminium sans chrome, matériau d'aluminium et procédé de traitement de revêtement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/088702 WO2018006270A1 (fr) 2016-07-05 2016-07-05 Agent de revêtement par conversion d'aluminium sans chrome, matériau d'aluminium et procédé de traitement de revêtement

Publications (1)

Publication Number Publication Date
WO2018006270A1 true WO2018006270A1 (fr) 2018-01-11

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PCT/CN2016/088702 WO2018006270A1 (fr) 2016-07-05 2016-07-05 Agent de revêtement par conversion d'aluminium sans chrome, matériau d'aluminium et procédé de traitement de revêtement

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109082658A (zh) * 2018-09-27 2018-12-25 浙江工业大学之江学院 一种环保无磷金属表面钝化液及其制备方法
CN111074255A (zh) * 2019-12-05 2020-04-28 刘广付 一种金属表面前处理剂及其制备方法和应用

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0760401A1 (fr) * 1995-08-21 1997-03-05 Dipsol Chemical Co., Ltd Composition liquide et procédé pour former une couche anti-corrosive
CN1516751A (zh) * 2001-06-15 2004-07-28 �ձ�������ʽ���� 金属表面处理用处理液及表面处理方法
CN101668881A (zh) * 2007-03-29 2010-03-10 阿托泰克德国有限公司 在金属表面形成防蚀层的试剂
CN101701336A (zh) * 2009-11-26 2010-05-05 芜湖市瑞杰环保材料科技有限公司 一种环保的金属表面处理剂及其使用方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0760401A1 (fr) * 1995-08-21 1997-03-05 Dipsol Chemical Co., Ltd Composition liquide et procédé pour former une couche anti-corrosive
CN1516751A (zh) * 2001-06-15 2004-07-28 �ձ�������ʽ���� 金属表面处理用处理液及表面处理方法
CN101668881A (zh) * 2007-03-29 2010-03-10 阿托泰克德国有限公司 在金属表面形成防蚀层的试剂
CN101701336A (zh) * 2009-11-26 2010-05-05 芜湖市瑞杰环保材料科技有限公司 一种环保的金属表面处理剂及其使用方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109082658A (zh) * 2018-09-27 2018-12-25 浙江工业大学之江学院 一种环保无磷金属表面钝化液及其制备方法
CN111074255A (zh) * 2019-12-05 2020-04-28 刘广付 一种金属表面前处理剂及其制备方法和应用

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