CN102644071A - Galvanized trivalent chromium black passivator - Google Patents

Galvanized trivalent chromium black passivator Download PDF

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Publication number
CN102644071A
CN102644071A CN2012101653877A CN201210165387A CN102644071A CN 102644071 A CN102644071 A CN 102644071A CN 2012101653877 A CN2012101653877 A CN 2012101653877A CN 201210165387 A CN201210165387 A CN 201210165387A CN 102644071 A CN102644071 A CN 102644071A
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CN
China
Prior art keywords
trivalent chromium
passivator
passivation
chromium black
zinc
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Pending
Application number
CN2012101653877A
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Chinese (zh)
Inventor
石磊
刘华星
刘科高
李静
林晓娟
李大勇
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Shandong Jianzhu University
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Shandong Jianzhu University
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Priority to CN2012101653877A priority Critical patent/CN102644071A/en
Publication of CN102644071A publication Critical patent/CN102644071A/en
Pending legal-status Critical Current

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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
    • C23C22/07—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 phosphates
    • C23C22/08—Orthophosphates
    • C23C22/12—Orthophosphates containing zinc cations
    • C23C22/17—Orthophosphates containing zinc cations containing also organic acids
    • 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

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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

The invention relates to a galvanized trivalent chromium black passivator which is prepared by dissoling, mixing and homogenizing chromic chloride, malonic acid, copper sulfate, sodium gluconate, sodium dihydrogen phosphate and the like according to a certain proportion, and treating by sealing agent after passivation. The passivator is free from the pollution of trivalent chromium in the passivation process, and a passivation workpiece is even, black and bright in appearance color and high in corrosion resistance.

Description

A kind of zinc-plated trivalent chromium black passivator
Technical field
The present invention relates to a kind of zinc-plated trivalent chromium black passivator, relate in particular to a kind of composition of zinc-plated trivalent chromium black passivator, the effect and the compound method of each composition.
Background technology
Zinc-plated is the effective way that improves iron and steel plating piece resistance to corrosion, but the surface of zinc layer is easy to corrosion, needs Passivation Treatment usually.Traditional passivation technology all is to adopt the sexavalent chrome passivation, but sexavalent chrome has severe toxicity, has the effect of carcinogenic teratogenesis.European Union (ROHs), forbids throwing on the European Union market Pd, Hg, Cd, Cr in " about in electronic electric equipment, banning use of some objectionable impurities instruction " of enforcement on July 1 in 2006 6+, gather dibromodiphenyl ether and gather 6 kinds of objectionable impuritiess such as bromo biphenyl.On March 1st, 2007 rose, and China forbids that the electric equipment products strict demand that puts goods on the market can not contain above 6 kinds of objectionable impuritiess.So the products substitution sexavalent chrome passivation of environment-friendly type becomes an urgent demand.
The zinc electroplating with black chromate conversion coating technology is still immature at home; There is a lot of technological deficiencies in present existing trivalent chromium black passivation; The rete blackness that obtains like the patent No. CN1729311A of China is not enough, and aging along with passivating solution, and its blackness adjustment strengthens thereupon.Patent No. CN101831648B adopts acid mordant dye as blackening agent for surface; Though the passivation film outward appearance is fine and close, solidity to corrosion is good; But acid mordant dye is relatively more responsive to impurity; Meet different metallic and can present different color and lusters,, be not easy control so copper, the iron of trace all can exert an influence to its color.
Summary of the invention
Blackness and the solidity to corrosion of the present invention in order to improve passive film makes simultaneously and do not contain Cr in the plating bath 6+And invented a kind of zinc-plated trivalent chromium black passivator.
The present invention adopts materials such as chromium chloride, propanedioic acid, copper sulfate, Sunmorl N 60S, SODIUM PHOSPHATE, MONOBASIC to form zinc-plated trivalent chromium blue-white deactivator.
Concrete preparation method of the present invention comprises the step of following order:
A. the chromium chloride of calculated amount is poured in the less water, stirring is fully dissolved it;
B. the propanedioic acid with calculated amount slowly adds, and stirring makes it fully dissolve the back and about 70～80 ℃ of heating 20min, is cooled to room temperature;
C. the copper sulfate of calculated amount is poured into, stirred;
D. the SODIUM PHOSPHATE, MONOBASIC of calculated amount is poured into, stirred;
E. the Sunmorl N 60S with calculated amount slowly adds, and stirs rapidly, and it is fully dissolved;
F. behind the water constant volume with calculated amount, left standstill 10 minutes, transfer pH in 1.5～2.5 scopes with nitric acid.
A kind of zinc-plated trivalent chromium black passivator of gained of the present invention is the liquid of blackish green for clarification.
Description of test
The present invention implements Passivation Treatment through after carrying out zinc-plated experiment in trivalent chromium deactivating liquid, through after the processing of different time, carry out sealing treatment with encapsulant, observes the color and luster of coating, and carries out neutral salt spray test and measure its corrosion resisting property.
Embodiment
The concrete preparation process of present embodiment is following:
A. prepare general low-cyanide zinc plating solution, and adjustment pH value, electroplate.
B. take out sample behind the certain hour, in 3% nitric acid, carry out Passivation Treatment after the bright dipping, passivation time is 5～15s.
C. observe the color and luster that transforms rete, and carry out neutral salt spray test.
A kind of zinc-plated trivalent chromium black passivator is:
Figure BSA00000723202500021
Figure BSA00000723202500031

Claims (1)

1. a zinc-plated trivalent chromium black passivator is characterized in that the raw material of passivator is formed as follows: contain the chromium chloride of 20～50g/L, the propanedioic acid of 10～20g/L; The copper sulfate of 10～20g/L; The Sunmorl N 60S of 5～15g/L, the SODIUM PHOSPHATE, MONOBASIC of 10～20g/L, all the other are water; The pH value maintained in 1.5～2.5 scopes when trivalent chromium black passivator used.
CN2012101653877A 2012-05-25 2012-05-25 Galvanized trivalent chromium black passivator Pending CN102644071A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012101653877A CN102644071A (en) 2012-05-25 2012-05-25 Galvanized trivalent chromium black passivator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012101653877A CN102644071A (en) 2012-05-25 2012-05-25 Galvanized trivalent chromium black passivator

Publications (1)

Publication Number Publication Date
CN102644071A true CN102644071A (en) 2012-08-22

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Country Status (1)

Country Link
CN (1) CN102644071A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103255403A (en) * 2013-05-16 2013-08-21 山东建筑大学 Non-chrome black passivator
CN103849864A (en) * 2014-02-24 2014-06-11 昆明理工大学 Galvanizing chrome-free iridescent passivation liquid as well as preparation and application methods thereof
CN104962975A (en) * 2015-07-03 2015-10-07 滨中元川金属制品（昆山）有限公司 Salt-fog-resistant galvanizing blackening process
CN105518182A (en) * 2013-08-28 2016-04-20 本田技研工业株式会社 Black coating film-forming vehicle component and/or fastening component, and manufacturing method therefor
CN107604348A (en) * 2017-09-26 2018-01-19 中国石油大学(华东) A kind of new green environment protection trivalent chromium conversion membrane preparation method
CN109576696A (en) * 2017-09-29 2019-04-05 蓝思科技（长沙）有限公司 For the melanism medical fluid of metal grill, its melanism method and metal grill and touch screen

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1670250A (en) * 2005-04-26 2005-09-21 汤小卫 Trivalent chromium deactivating liquid and its preparing method
CN1729311A (en) * 2002-03-14 2006-02-01 迪普索尔化学株式会社 Treating solution for forming black hexavalent chromium-free chemical coating on zinc or zinc alloy plated substrate, and method for forming black hexavalent chromium-free chemical coating on zinc or
JP2007284710A (en) * 2006-04-13 2007-11-01 Jfe Steel Kk Surface treatment agent for galvanized steel material and surface treated galvanized steel sheet
CN101130865A (en) * 2007-10-11 2008-02-27 上海交通大学 Trivalent chromium black passivator and method for making the same
CN101831648A (en) * 2010-06-25 2010-09-15 湖南大学 Organic precursor-based trivalent chromium black passivation solution and preparation method thereof
CN102011112A (en) * 2010-12-15 2011-04-13 济南德锡科技有限公司 Zinc and zinc alloy plating black passivation solution and preparation method thereof
CN102041495A (en) * 2009-10-15 2011-05-04 葛八权 Zinc coating black passivant
CN102242359A (en) * 2011-06-21 2011-11-16 湖南大学 Trivalent chromium black passivation solution based on plant extract pigment, and preparation method and use method thereof
WO2012035917A1 (en) * 2010-09-14 2012-03-22 ユケン工業株式会社 Chemical film finishing agent and method for producing same

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1729311A (en) * 2002-03-14 2006-02-01 迪普索尔化学株式会社 Treating solution for forming black hexavalent chromium-free chemical coating on zinc or zinc alloy plated substrate, and method for forming black hexavalent chromium-free chemical coating on zinc or
CN1670250A (en) * 2005-04-26 2005-09-21 汤小卫 Trivalent chromium deactivating liquid and its preparing method
JP2007284710A (en) * 2006-04-13 2007-11-01 Jfe Steel Kk Surface treatment agent for galvanized steel material and surface treated galvanized steel sheet
CN101130865A (en) * 2007-10-11 2008-02-27 上海交通大学 Trivalent chromium black passivator and method for making the same
CN102041495A (en) * 2009-10-15 2011-05-04 葛八权 Zinc coating black passivant
CN101831648A (en) * 2010-06-25 2010-09-15 湖南大学 Organic precursor-based trivalent chromium black passivation solution and preparation method thereof
WO2012035917A1 (en) * 2010-09-14 2012-03-22 ユケン工業株式会社 Chemical film finishing agent and method for producing same
CN102011112A (en) * 2010-12-15 2011-04-13 济南德锡科技有限公司 Zinc and zinc alloy plating black passivation solution and preparation method thereof
CN102242359A (en) * 2011-06-21 2011-11-16 湖南大学 Trivalent chromium black passivation solution based on plant extract pigment, and preparation method and use method thereof

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103255403A (en) * 2013-05-16 2013-08-21 山东建筑大学 Non-chrome black passivator
CN103255403B (en) * 2013-05-16 2015-07-01 山东建筑大学 Non-chrome black passivator
CN105518182A (en) * 2013-08-28 2016-04-20 本田技研工业株式会社 Black coating film-forming vehicle component and/or fastening component, and manufacturing method therefor
CN105518182B (en) * 2013-08-28 2018-01-26 本田技研工业株式会社 The vehicle part and/or link part and its manufacture method of black epithelium
CN103849864A (en) * 2014-02-24 2014-06-11 昆明理工大学 Galvanizing chrome-free iridescent passivation liquid as well as preparation and application methods thereof
CN104962975A (en) * 2015-07-03 2015-10-07 滨中元川金属制品（昆山）有限公司 Salt-fog-resistant galvanizing blackening process
CN107604348A (en) * 2017-09-26 2018-01-19 中国石油大学(华东) A kind of new green environment protection trivalent chromium conversion membrane preparation method
CN107604348B (en) * 2017-09-26 2021-01-08 中国石油大学(华东) Preparation method of green environment-friendly trivalent chromium conversion coating
CN109576696A (en) * 2017-09-29 2019-04-05 蓝思科技（长沙）有限公司 For the melanism medical fluid of metal grill, its melanism method and metal grill and touch screen
CN109576696B (en) * 2017-09-29 2021-02-26 蓝思科技（长沙）有限公司 Blackening liquid medicine for metal grid, blackening method of blackening liquid medicine, metal grid and touch screen

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Application publication date: 20120822