CN104342678A - 一种镁合金表面无铬复合钝化液 - Google Patents

一种镁合金表面无铬复合钝化液 Download PDF

Info

Publication number
CN104342678A
CN104342678A CN201310317118.2A CN201310317118A CN104342678A CN 104342678 A CN104342678 A CN 104342678A CN 201310317118 A CN201310317118 A CN 201310317118A CN 104342678 A CN104342678 A CN 104342678A
Authority
CN
China
Prior art keywords
magnesium alloy
alloy surface
free composite
composite passivation
passivation solution
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN201310317118.2A
Other languages
English (en)
Inventor
庄进
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WUXI SHITANGWAN INDUSTRIAL PARK DEVELOPMENT CONSTRUCTION Co Ltd
Original Assignee
WUXI SHITANGWAN INDUSTRIAL PARK DEVELOPMENT CONSTRUCTION Co Ltd
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 WUXI SHITANGWAN INDUSTRIAL PARK DEVELOPMENT CONSTRUCTION Co Ltd filed Critical WUXI SHITANGWAN INDUSTRIAL PARK DEVELOPMENT CONSTRUCTION Co Ltd
Priority to CN201310317118.2A priority Critical patent/CN104342678A/zh
Publication of CN104342678A publication Critical patent/CN104342678A/zh
Pending legal-status Critical Current

Links

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
    • C23C22/42—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 phosphates

Landscapes

  • 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

本发明公开了一种镁合金表面无铬复合钝化液，该钝化液的组成为：钼酸钠12-14g/L，磷酸二氢锰6-8g/L，磷酸二氢钙4-6g/L，氧化锌14-16g/L，85%磷酸26-28g/L，硝酸钠6-8g/L，氯酸钙2-4g/L，硼酸2-4g/L，氯化锶1-3g/L，过氧化钾2-4g/L，OP-100.3-0.5g/L，余量为去离子水。

Description

一种镁合金表面无铬复合钝化液
技术领域
本发明涉及表面处理技术领域，尤其涉及一种镁合金表面无铬复合钝化液。
背景技术
镁合金以质轻、比强度高、可再循环和良好铸造性能等特点，被誉为21世纪绿色金属结构材料，在航空航天、汽车、电子以及军事等工业上有广阔的应用前景，近年来以20％的速度增长。特别是由于交通工具如汽车、摩托车、自行车、列车等轻量化的要求，以及3C电子产品如手机、电脑、MP3、照相机、摄像机等的快速发展，镁合金材料的轻质、减振性能好、防电磁干扰好和可回收性等优点，使其在交通工具零部件、3C产品壳体材料方面的应用前景非常可观。镁合金在实用金属中电位是最负的，使镁合金的耐蚀性能特别差，因此镁合金的使用需要进行表面处理来提高耐腐蚀性能。
镁合金表面化学转化膜不仅本身具有一定的耐蚀性能，还可以在其上面进行涂装提高装饰性，因此化学转化常作为镁合金彩色涂装的前处理，提高了整个涂装体系的附着力与耐腐蚀性能。另外，化学转化采用浸泡处理不需要通电，处理工艺简单容易控制，因此是最为广泛应用的表面处理技术。镁合金的传统化学转化处理以MIL/M23171和HB/Z5078278工艺为代表，由于处理液中含有毒性高且易致癌的六价铬，其使用正受到严格的限制。特别是2000年欧洲议会通过的ELVs法规中明确规定每辆汽车用于零部件表面处理的六价铬用量不得超过2g，依照欧盟RoHS法规与我国将实施的电子信息产品污染控制管理办法，严格限制电子电气设备中六价铬等有毒成分的含量，因此镁合金的环境友好型无铬转化处理技术受到极大关注。目前报道的无铬转化处理工艺主要有磷酸盐处理、磷酸盐-高锰酸盐处理、氟锆酸盐或氟钛酸盐处理、锡酸盐处理、钼酸盐或钨酸盐、钒酸盐处理、钴盐处理等，但是与传统铬酸盐处理技术相比较，在提高处理效率、降低处理温度、改善耐腐蚀性能方面还有待改进，尚不能取代铬酸盐处理技术，急需发展能在室温下高效成膜的镁合金表面无铬转化处理技术。
发明内容
本发明的目的在于提出一种镁合金表面无铬复合钝化液，该钝化液不含铬，并且比现在的无铬钝化液钝化效果好，制备的钝化膜耐腐蚀性能优异。
为达此目的，本发明采用以下技术方案：
一种镁合金表面无铬复合钝化液，该钝化液的组成为：钼酸钠12-14g/L，磷酸二氢锰6-8g/L，磷酸二氢钙4-6g/L，氧化锌14-16g/L，85%磷酸26-28g/L，硝酸钠6-8g/L，氯酸钙2-4g/L，硼酸2-4g/L，氯化锶1-3g/L，过氧化钾2-4g/L，OP-100.3-0.5g/L，余量为去离子水。
优选，该钝化液的组成为：钼酸钠13g/L，磷酸二氢锰7g/L，磷酸二氢钙5g/L，氧化锌15g/L，85%磷酸27g/L，硝酸钠7g/L，氯酸钙3g/L，硼酸3g/L，氯化锶2g/L，过氧化钾3g/L，OP-100.4g/L，余量为去离子水。
本发明的有益效果为：
本发明通过对钝化液组分的调整，在镁合金表面生成由钙、锰、镁、锌的氧化物组成的复合氧化膜，通过对促进剂和助剂的组分和含量的调整，使得成膜快，效率高，组分中不含铬，环保效果好，并且该复合钝化膜的耐腐蚀优异，可以达到甚至超过铬钝化膜的耐腐蚀性。
具体实施方式
实施例一
一种镁合金表面无铬复合钝化液，该钝化液的组成为：钼酸钠12g/L，磷酸二氢锰8g/L，磷酸二氢钙4g/L，氧化锌16g/L，85%磷酸26g/L，硝酸钠8g/L，氯酸钙2g/L，硼酸4g/L，氯化锶1g/L，过氧化钾4g/L，OP-100.3g/L，余量为去离子水。
实施例二
一种镁合金表面无铬复合钝化液，该钝化液的组成为：钼酸钠14g/L，磷酸二氢锰6g/L，磷酸二氢钙6g/L，氧化锌14g/L，85%磷酸28g/L，硝酸钠6g/L，氯酸钙4g/L，硼酸2g/L，氯化锶3g/L，过氧化钾2g/L，OP-100.5g/L，余量为去离子水。
实施例三
一种镁合金表面无铬复合钝化液，该钝化液的组成为：钼酸钠13g/L，磷酸二氢锰7g/L，磷酸二氢钙5g/L，氧化锌15g/L，85%磷酸27g/L，硝酸钠7g/L，氯酸钙3g/L，硼酸3g/L，氯化锶2g/L，过氧化钾3g/L，OP-100.4g/L，余量为去离子水。

Claims (2)

1.一种镁合金表面无铬复合钝化液，其特征在于，该钝化液的组成为：钼酸钠12-14g/L，磷酸二氢锰6-8g/L，磷酸二氢钙4-6g/L，氧化锌14-16g/L，85%磷酸26-28g/L，硝酸钠6-8g/L，氯酸钙2-4g/L，硼酸2-4g/L，氯化锶1-3g/L，过氧化钾2-4g/L，OP-100.3-0.5g/L，余量为去离子水。
2.如权利要求1所述的一种镁合金表面无铬复合钝化液，其特征在于，该钝化液的组成为：钼酸钠13g/L，磷酸二氢锰7g/L，磷酸二氢钙5g/L，氧化锌15g/L，85%磷酸27g/L，硝酸钠7g/L，氯酸钙3g/L，硼酸3g/L，氯化锶2g/L，过氧化钾3g/L，OP-100.4g/L，余量为去离子水。
CN201310317118.2A 2013-07-25 2013-07-25 一种镁合金表面无铬复合钝化液 Pending CN104342678A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310317118.2A CN104342678A (zh) 2013-07-25 2013-07-25 一种镁合金表面无铬复合钝化液

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310317118.2A CN104342678A (zh) 2013-07-25 2013-07-25 一种镁合金表面无铬复合钝化液

Publications (1)

Publication Number Publication Date
CN104342678A true CN104342678A (zh) 2015-02-11

Family

ID=52499114

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310317118.2A Pending CN104342678A (zh) 2013-07-25 2013-07-25 一种镁合金表面无铬复合钝化液

Country Status (1)

Country Link
CN (1) CN104342678A (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3392374A4 (en) * 2015-12-14 2019-05-15 Baoshan Iron & Steel Co., Ltd. FILM-FORMING TREATMENT FOR COMPOUND FILM FOR CHEMICAL CONVERSION FOR MAGNESIUM ALLOY AND FILM FORMING PROCESS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3392374A4 (en) * 2015-12-14 2019-05-15 Baoshan Iron & Steel Co., Ltd. FILM-FORMING TREATMENT FOR COMPOUND FILM FOR CHEMICAL CONVERSION FOR MAGNESIUM ALLOY AND FILM FORMING PROCESS
US11286568B2 (en) 2015-12-14 2022-03-29 Baoshan Iron & Steel Co., Ltd. Film forming treatment agent for composite chemical conversion film for magnesium alloy, and film forming process

Similar Documents

Publication Publication Date Title
CN102409324B (zh) 船用铝合金无铬无磷纳米级化学转化液及转化膜制备方法
CN103668161B (zh) 一种铝合金表面锰-钛系无铬钝化液及钝化方法
WO2017000315A1 (zh) 用于铝合金表面处理的钛锆系有色无铬钝化液、使用其处理铝合金表面的方法及其应用
CN101851755B (zh) 一种镁合金无铬无氟磷化溶液及磷化方法
CN103938198B (zh) 无磷纳米陶化剂、制备方法及其应用
CN106148974A (zh) 一种钢铁除锈磷化剂
CN101629287B (zh) 一种镁合金表面处理工艺
CN102220578A (zh) 一种铝合金化学氧化液
CN102851660A (zh) 一种钢铁表面无磷无铬钝化成膜液及其使用方法
CN103668157A (zh) 钢铁工件低成本环保型硅烷陶化处理剂
CN103710688A (zh) 一种弱酸性无磷转化剂
CN104087927B (zh) 镁合金产品表面改性处理方法
CN104388916A (zh) 一种金属制品磷化处理液
CN104342682A (zh) 一种镁合金工件表面耐蚀转化膜处理液
CN102234798B (zh) 一种镁合金表面转化成膜液及其使用方法
CN104120421A (zh) 镁合金无铬化学转化膜处理剂及其制备方法
CN104342678A (zh) 一种镁合金表面无铬复合钝化液
CN104342680A (zh) 一种镁合金表面无铬复合钝化液的配制工艺
CN104357823A (zh) 一种环保型钢铁表面处理液
CN104357822A (zh) 一种环保型钢铁表面处理液及其使用方法
CN104342679A (zh) 一种镁合金表面无铬复合钝化工艺
CN103469190B (zh) 一种复合型低温磷化液
CN106498380A (zh) 一种常温耐腐蚀磷化液及其制备方法
CN104342672A (zh) 一种汽车用镁合金表面钝化液
CN105803440A (zh) 一种碳钢、镀锌板、铝材同槽表面预处理剂、制备方法及金属表面预处理方法

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20150211