WO2018218427A1 - 无铬皮膜剂、金属件及其表面皮膜化处理方法 - Google Patents

无铬皮膜剂、金属件及其表面皮膜化处理方法 Download PDF

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WO2018218427A1
WO2018218427A1 PCT/CN2017/086349 CN2017086349W WO2018218427A1 WO 2018218427 A1 WO2018218427 A1 WO 2018218427A1 CN 2017086349 W CN2017086349 W CN 2017086349W WO 2018218427 A1 WO2018218427 A1 WO 2018218427A1
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chromium
coating agent
free
metal
film
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PCT/CN2017/086349
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English (en)
French (fr)
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王饶玲
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深圳市恒兆智科技有限公司
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Priority to CN201780091055.XA priority Critical patent/CN110719970A/zh
Priority to PCT/CN2017/086349 priority patent/WO2018218427A1/zh
Publication of WO2018218427A1 publication Critical patent/WO2018218427A1/zh

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    • 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
    • C23C22/05—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
    • C23C22/36—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 containing also phosphates
    • 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
    • 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
    • C23C22/68—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 solutions with pH between 6 and 8

Definitions

  • the present invention relates to the field of metal surface treatment technology, and in particular, to a chromium-free film agent, a metal member, and a film treatment method thereof.
  • the surface treatment technology of the workpiece is usually applied.
  • the surface treatment processes of steel, zinc, aluminum, magnesium, etc. and their alloys go deep into all walks of life.
  • most workpieces require pre-treatment before surface treatment, for example, cleaning, decontamination and degreasing, and metal workpieces for certain applications require process passivation.
  • the invention provides a pale yellow chrome-free coating agent with good environmental protection, good bonding ability, strong corrosion resistance and uniform color, and a surface treatment method for metal parts and a film-forming treatment. metallic parts.
  • a chromium-free coating agent for surface pretreatment of metal parts which comprises the following components in a mass content: 0.2-4 g/L fluorozirconic acid, 3-20 g/L phytic acid, 0.01-0.3 g/L Nickel fluoride, 0.2-5 g/L silica sol.
  • a metal member surface filming treatment method comprising the steps of: preparing a chrome-free film as described above; pH value is controlled to 3.0-6.0, and the metal member is treated with a film solution, after a predetermined daytime After processing
  • the above chrome-free coating agent forms an aluminum film on the surface of the metal to provide a coating treatment layer and an anticorrosive treatment.
  • the chrome-free coating agent is a better alternative to the conventional chrome-containing coating agent, and avoids environmental pollution of heavy metals such as chromium.
  • the shortcoming is a new material with good environmental protection, good bonding ability, strong corrosion resistance and no pollution. It is easy to use and can be seen through the color of the film.
  • Embodiments of the present invention provide a chromium-free coating agent for surface pretreatment of metal parts, which comprises the following components: 0.2-4 g/L fluorozirconic acid, 3-20 g/L phytic acid, 0.01- 0.3g/L nickel fluoride, 0.2-5g/L silica sol
  • the phytic acid has a mass content of 5-15 g/L
  • the fluorozirconic acid has a mass content of 1-3 g/L
  • the nickel fluoride has a mass content of 0.05-0.2 g/L.
  • the silica sol has a mass content of 1-3 g/L
  • the coating agent adjusts the pH to 3-6 by ammonia water, and the pH value is preferably 4-6.
  • the chrome-free coating agent has a P H value of 3.0 to 6.0.
  • fluorozirconic acid and phytic acid are used as main film components, and nickel fluoride is used as a filler to increase the corrosion resistance of the film, and the silica sol is firmly adsorbed on the workpiece as a filler and a coating layer. Provides good corrosion resistance to the workpiece.
  • the processing metal member is an aluminum member, an aluminum alloy, a die-cast aluminum, a zinc alloy, a magnesium alloy, or the like.
  • the spray or impregnation is carried out by spraying or impregnating the metal member for 3 to 10 minutes, and the spray pressure is 0.8 to 1.5 kgf/cm 2 .
  • the pH value of the magnesium alloy workpiece and the die-cast aluminum workpiece it should be adjusted to 3-6. Add the ammonia water and the chrome-free coating agent to the PH value to the above working range.
  • Embodiments of the present invention also provide a metal member which is treated by a surface treatment method of a metal member as described above to form a film on the surface of the metal member.
  • the metal member may be, but not limited to, zinc and aluminum, magnesium, and alloy parts thereof. Taking die-cast aluminum parts as an example, it forms a light yellow corrosion-resistant passivation layer on the surface of die-cast aluminum.
  • the chrome-free coating agent does not contain environmentally harmful chromium ions and is a green product.
  • the following metal parts are all made of die-cast aluminum.
  • treatment method preparing the chromium-free film agent as described above; PH value is controlled to 4; processing surface clean metal parts
  • the metal parts were washed with water at 60 ° C for 2 minutes and dried at 80 ° C for 20 minutes.
  • the components were mixed according to the following parts by weight: lg/L fluorozirconic acid, 5 g/L phytic acid, 0.05 g/L nickel fluoride, lg/L silica sol, stirred, uniformly mixed, and formulated into a filming agent.
  • the ingredients were mixed in the following parts by weight: 2 g/L of fluorozirconic acid, 10 g/L of phytic acid, 0.1 g/L of nickel fluoride, 2 g/L of silica sol, stirred, uniformly mixed, and formulated into a filming agent.
  • Treatment method preparing the chromium-free film agent as described above; PH value is controlled to 5.5; treating the surface clean metal parts, after 6 minutes of daytime treatment, washing the water at 60 ° C for 2 minutes, after 80 ° C, dry for 20 minutes. [0028] After the above, it is formed into a desired metal member. After the treatment, the surface of the metal part was observed, and a uniform layer of light yellow film was formed on the surface of the metal piece. The neutral salt spray test of the metal piece was not corroded for 96 hours, and the boiling water test after painting was tested for 2 hours without any coating. Fall off, level 0.
  • the components were mixed in the following parts by weight: 4 g/L of fluorozirconic acid, 15 g/L of phytic acid, 0.2 g/L of nickel fluoride, 3 g/L of silica sol, stirred, uniformly mixed, and formulated into a filming agent.
  • Treatment method preparing the chromium-free coating agent as described above; PH value is controlled to 6; processing surface clean metal parts
  • the metal parts were washed with water at 60 ° C for 2 minutes and dried at 80 ° C for 20 minutes.

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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

一种无铬皮膜剂、金属件及其表面皮膜化处理方法。皮膜剂包括：0.2-4g/L氟锆酸，3-20g/L植酸，0.01-0.3g/L氟化镍，0.2-5g/L硅溶胶。此无铬皮膜剂在金属表面形成浅黄色的耐腐蚀钝化层，该皮膜剂不含损害环境的铬离子，提供涂装处理底层和防腐处理，是一种绿色环保产品钝化皮膜，此钝化皮膜与涂装漆膜等的结合能力良好、耐腐蚀能力强。

Description

说明书 发明名称：无铬皮膜剂、 金属件及其表面皮膜化处理方法 技术领域
[0001] 本发明涉及金属表面处理技术领域， 具体涉及一种无铬皮膜剂、 金属件及其皮 膜处理方法。
背景技术
[0002] 为提高产品表面性能或者外观， 通常对工件表面处理技术。 例如， 钢铁、 锌、 铝、 镁等及其合金的表面处理工艺深入各行各业中。 而且， 大多数工件在进行 表面处理前还需要经过预处理， 例如， 进行清洗， 除污除油， 某些用途的金属 工件还需要进行处理钝化处理。
[0003] 一般在机械加工及电子电气行业， 金属在涂装前都需要进行表面预处理， 如通 过钝化液或皮膜化处理， 传统的钝化剂或皮膜剂通常含有六价铬、 三价铬等重 金属， 显然不能满足越来越高的环保要求。 其中三价铬钝化剂比六价铬要环保 ， 但三价铬钝化大多无色， 难以判断膜层的形成情况。
技术问题
[0004] 有鉴于此， 提供一种绿色环保、 结合能力良好和耐腐蚀能力强、 颜色均匀的浅 黄色的无铬皮膜剂， 以及金属件表面皮膜化处理方法和经过皮膜化处理后制得 的金属件。
问题的解决方案
技术解决方案
[0005] 一种无铬皮膜剂， 用于金属件表面预处理， 其包括如下质量含量的成分： 0.2-4 g/L氟锆酸， 3-20g/L植酸， 0.01-0.3g/L氟化镍， 0.2-5g/L硅溶胶。
[0006] 一种金属件表面皮膜化处理方法， 其包括下列步骤： 配制如上所述的无铬皮膜 齐 ij ; PH值控制为 3.0-6.0， 将金属件用皮膜溶液进行处理， 经过预定吋间处理后
， 水洗金属件， 干燥。
[0007] 以及， 一种金属件， 其表面通过如上所述的金属件表面皮膜化处理方法形成皮 膜。 发明的有益效果
有益效果
[0008] 上述无铬皮膜剂在金属表面形成铝皮膜， 用以提供涂装处理底层和防腐处理， 该无铬皮膜剂是替代传统含铬皮膜剂的较佳选择， 避免铬等重金属产生环境污 染的不足， 是一种绿色环保、 结合能力良好和耐腐蚀能力强、 无污染的新型材 料， 使用方便， 可以通过皮膜的颜色来看到膜层的形成。
本发明的实施方式
[0009] 以下将结合具体实施例对本发明进行详细说明。
[0010] 本发明实施例提供一种无铬皮膜剂， 用于金属件表面预处理， 其包括如下质量 含量的成分： 0.2-4g/L氟锆酸， 3-20g/L植酸， 0.01-0.3g/L氟化镍， 0.2-5g/L硅溶胶
[0011] 优选地， 所述植酸的质量含量为 5-15g/L， 所述氟锆酸的质量含量为 l-3g/L， 所 述氟化镍的质量含量为 0.05-0.2g/L， 所述硅溶胶的质量含量为 l-3g/L， 所述皮膜 剂通过氨水调节 PH值至 3-6， PH值优选为 4 - 6。 在使用吋， 所述无铬皮膜剂的 P H值为 3.0-6.0。
[0012] 在上述无铬皮膜剂中， 氟锆酸和植酸作为主要皮膜成分， 氟化镍作为填充剂增 加皮膜耐蚀性， 硅溶胶作为填充剂和覆盖层牢牢的吸附在工件上， 为工件提供 了很好的耐蚀性。
[0013] 本发明实施例还提供一种金属件表面皮膜化处理方法， 其包括下列步骤： 配制 如上所述的无铬皮膜剂； PH值控制为 3.0-6.0; 将金属件用皮膜溶液进行处理， 经过预定吋间处理后， 水洗金属件， 干燥。
[0014] 具体地， 所述处理金属件为铝件、 铝合金、 压铸铝、 锌合金、 镁合金等。 是通 过喷淋或浸渍金属件， 所述喷淋或浸渍吋间为 3-10分钟， 所述喷淋压力为 0.8-1.5 kgf/cm 2。 另外如果处理的是镁合金工件和压铸铝工件 PH值则要调节至 3-6， 加 入氨水中和无铬皮膜剂将 PH值至上述工作范围。
[0015] 本发明实施例中无铬皮膜剂是锆盐处理剂、 无磷、 无重金属、 低沉澄， 适合于 锌和铝、 镁及其合金的涂装前表面处理， 可以代替传统铬化剂。 该无铬皮膜剂 在金属表面形成浅黄色的耐腐蚀的钝化膜， 与涂装漆膜的结合能力非常好并且 耐腐蚀能力强。
[0016] 本发明实施例还提供一种金属件， 其通过如上所述的金属件表面皮膜化处理方 法进行处理， 使金属件表面形成皮膜。 金属件可以是但不限于锌和铝、 镁及其 合金件等。 以压铸铝件为例， 其在压铸铝材表面形成一层浅黄色的耐腐蚀的钝 化层， 该无铬皮膜剂不含损害环境的铬离子， 是一种绿色环保产品。 以下金属 件均以压铸铝为例
[0017] 实施例 1
[0018] 按照下列重量份数混合各成分： 0.2g/L氟锆酸， 3g/L植酸， 0.01g/L氟化镍， 0.2 g/L硅溶胶， 搅拌， 混合均匀， 配制成皮膜剂。
[0019] 处理方法： 配制如上所述的无铬皮膜剂； PH值控制为 4; 处理表面洁净金属件
， 经过 4分钟吋间处理后， 60°C的清水洗 2分钟金属件， 经 80°C， 20分钟干燥。
[0020] 经过上述形成为所需的金属件。 处理后， 观察金属件表面， 金属件表面有一层 均匀的浅黄色的皮膜层， 金属件中性盐雾测试 24小吋不腐蚀， 涂装后沸水测试 2 小吋百格试验， 无任何涂层脱落， 等级为 0。
[0021] 实施例 2
[0022] 按照下列重量份数混合各成分： lg/L氟锆酸， 5g/L植酸， 0.05g/L氟化镍， lg/L 硅溶胶， 搅拌， 混合均匀， 配制成皮膜剂。
[0023] 处理方法： 配制如上所述的无铬皮膜剂； PH值控制为 5; 处理表面洁净金属件
， 经过 5分钟吋间处理后， 60°C的清水洗 2分钟金属件， 经 80°C， 20分钟干燥。
[0024] 经过上述形成为所需的金属件。 处理后， 观察金属件表面， 金属件表面有一层 均匀的浅黄色的皮膜层， 金属件中性盐雾测试 48小吋不腐蚀， 涂装后沸水测试 2 小吋百格试验， 无任何涂层脱落， 等级为 0。
[0025] 实施例 3
[0026] 按照下列重量份数混合各成分： 2g/L氟锆酸， 10g/L植酸， 0.1g/L氟化镍， 2g/L 硅溶胶， 搅拌， 混合均匀， 配制成皮膜剂。
[0027] 处理方法： 配制如上所述的无铬皮膜剂； PH值控制为 5.5; 处理表面洁净金属 件， 经过 6分钟吋间处理后， 60°C的清水洗 2分钟金属件， 经 80°C， 20分钟干燥。 [0028] 经过上述形成为所需的金属件。 处理后， 观察金属件表面， 金属件表面有一层 均匀的浅黄色的皮膜层， 金属件中性盐雾测试 96小吋不腐蚀， 涂装后沸水测试 2 小吋百格试验， 无任何涂层脱落， 等级为 0。
[0029] 实施例 4
[0030] 按照下列重量份数混合各成分： 4g/L氟锆酸， 15g/L植酸， 0.2g/L氟化镍， 3g/L 硅溶胶， 搅拌， 混合均匀， 配制成皮膜剂。
[0031] 处理方法： 配制如上所述的无铬皮膜剂； PH值控制为 6; 处理表面洁净金属件
， 经过 8分钟吋间处理后， 60°C的清水洗 2分钟金属件， 经 80°C， 20分钟干燥。
[0032] 经过上述形成为所需的金属件。 处理后， 观察金属件表面， 金属件表面有一层 均匀的浅黄色的皮膜层， 金属件中性盐雾测试 96小吋不腐蚀， 涂装后沸水测试 2 小吋百格试验， 无任何涂层脱落， 等级为 0。
[0033] 需要说明的是， 本发明并不局限于上述实施方式， 根据本发明的创造精神， 本 领域技术人员还可以做出其他变化， 这些依据本发明的创造精神所做的变化， 都应包含在本发明所要求保护的范围之内。

Claims

权利要求书
[权利要求 1] 一种无铬皮膜剂， 用于金属件表面预处理， 其包括如下质量含量的成 分： 0.2-4g/L氟锆酸， 3-20g/L植酸， 0.01-0.3g/L氟化镍， 0.2-5g/L硅溶 胶。
[权利要求 2] 如权利要求 1所述的无铬皮膜剂 ， 其特征在于， 所述植酸的质量含量 为 5-15g/L。
[权利要求 3] 如权利要求 1所述的无铬皮膜剂， 其特征在于， 所述氟锆酸的质量含 量为 l-3g/L。
[权利要求 4] 如权利要求 1所述的无铬皮膜剂， 其特征在于， 所述氟化镍的质量含 量为 0.05-0.2g/L。
[权利要求 5] 如权利要求 1所述的无铬皮膜剂， 其特征在于， 所述硅溶胶的质量含 量为 l-3g/L。
[权利要求 6] 如权利要求 1所述的无铬皮膜剂， 其特征在于， 所述皮膜剂通过氨水 调节 PH值至 3.0-6.0。
[权利要求 7] —种金属件表面皮膜化处理方法， 其包括下列步骤： 配制如权利要求
1-6任一项所述的无铬皮膜剂； PH值控制为 3.0-6.0; 将金属件用皮膜 溶液进行处理， 经过预定吋间处理后， 水洗金属件， 干燥。
[权利要求 8] 如权利要求 7所述的金属件表面皮膜化处理方法， 其特征在于， 所述 皮膜溶液的 PH值通过氨水将调节至 4-6， 皮膜溶液的处理方法为喷淋 或浸泡方式。
[权利要求 9] 一种金属件， 其特征在于， 所述金属件表面通过如权利要求 8所述的 金属件表面皮膜化处理方法形成有皮膜。
PCT/CN2017/086349 2017-05-27 2017-05-27 无铬皮膜剂、金属件及其表面皮膜化处理方法 WO2018218427A1 (zh)

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CN103668155A (zh) * 2013-12-06 2014-03-26 长沙艾森设备维护技术有限公司 一种钝化液及其钝化黑色金属表面的方法
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CN104611688A (zh) * 2015-01-26 2015-05-13 杭州美立尔表面处理技术有限公司 一种铝钝化剂及其制备方法
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CN103668155A (zh) * 2013-12-06 2014-03-26 长沙艾森设备维护技术有限公司 一种钝化液及其钝化黑色金属表面的方法
CN103789759A (zh) * 2014-02-21 2014-05-14 上海溯扬工艺控制科技有限公司 一种铝合金喷涂前处理工艺
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