CN104451644A - Trivalent-chromium natural-color passivator with high corrosion resistance for zinc-nickel alloy - Google Patents
Trivalent-chromium natural-color passivator with high corrosion resistance for zinc-nickel alloy Download PDFInfo
- Publication number
- CN104451644A CN104451644A CN201410741396.5A CN201410741396A CN104451644A CN 104451644 A CN104451644 A CN 104451644A CN 201410741396 A CN201410741396 A CN 201410741396A CN 104451644 A CN104451644 A CN 104451644A
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- CN
- China
- Prior art keywords
- passivator
- chromium
- admiro
- trivalent chromium
- passivation
- 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.)
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- 229910052804 chromium Inorganic materials 0.000 title claims abstract description 50
- 239000011651 chromium Substances 0.000 title claims abstract description 50
- 238000005260 corrosion Methods 0.000 title claims abstract description 34
- 230000007797 corrosion Effects 0.000 title abstract description 12
- 229910000990 Ni alloy Inorganic materials 0.000 title abstract 3
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 title abstract 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 50
- 238000002161 passivation Methods 0.000 claims abstract description 43
- 238000000034 method Methods 0.000 claims abstract description 10
- 150000001868 cobalt Chemical class 0.000 claims abstract description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 16
- PHFQLYPOURZARY-UHFFFAOYSA-N chromium trinitrate Chemical compound [Cr+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O PHFQLYPOURZARY-UHFFFAOYSA-N 0.000 claims description 8
- 229910052759 nickel Inorganic materials 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 6
- 241000220317 Rosa Species 0.000 claims description 5
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 5
- UFMZWBIQTDUYBN-UHFFFAOYSA-N cobalt dinitrate Chemical compound [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O UFMZWBIQTDUYBN-UHFFFAOYSA-N 0.000 claims description 5
- 229910001981 cobalt nitrate Inorganic materials 0.000 claims description 5
- 239000013078 crystal Substances 0.000 claims description 5
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims description 5
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 5
- 229910021555 Chromium Chloride Inorganic materials 0.000 claims description 4
- QSWDMMVNRMROPK-UHFFFAOYSA-K chromium(3+) trichloride Chemical compound [Cl-].[Cl-].[Cl-].[Cr+3] QSWDMMVNRMROPK-UHFFFAOYSA-K 0.000 claims description 4
- GRWVQDDAKZFPFI-UHFFFAOYSA-H chromium(III) sulfate Chemical compound [Cr+3].[Cr+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O GRWVQDDAKZFPFI-UHFFFAOYSA-H 0.000 claims description 4
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 4
- -1 rare-earth salts Chemical class 0.000 claims description 4
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 abstract description 45
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 abstract description 16
- 235000006408 oxalic acid Nutrition 0.000 abstract description 15
- 239000008367 deionised water Substances 0.000 abstract description 8
- 229910021641 deionized water Inorganic materials 0.000 abstract description 8
- CVHZOJJKTDOEJC-UHFFFAOYSA-N saccharin Chemical compound C1=CC=C2C(=O)NS(=O)(=O)C2=C1 CVHZOJJKTDOEJC-UHFFFAOYSA-N 0.000 abstract description 8
- 235000010344 sodium nitrate Nutrition 0.000 abstract description 8
- 239000004317 sodium nitrate Substances 0.000 abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 150000003839 salts Chemical class 0.000 abstract description 4
- 231100000419 toxicity Toxicity 0.000 abstract description 3
- 230000001988 toxicity Effects 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 abstract 1
- RYZCLUQMCYZBJQ-UHFFFAOYSA-H lead(2+);dicarbonate;dihydroxide Chemical compound [OH-].[OH-].[Pb+2].[Pb+2].[Pb+2].[O-]C([O-])=O.[O-]C([O-])=O RYZCLUQMCYZBJQ-UHFFFAOYSA-H 0.000 abstract 1
- 238000004381 surface treatment Methods 0.000 abstract 1
- 241001163841 Albugo ipomoeae-panduratae Species 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 7
- 229940001516 sodium nitrate Drugs 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 231100000004 severe toxicity Toxicity 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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
- C23C22/46—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 oxalates
-
- 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 the technical field of metal surface treatment and protection and particularly relates to a trivalent-chromium natural-color passivator with high corrosion resistance for a zinc-nickel alloy. The trivalent-chromium natural-color passivator is prepared from trivalent chromium, cobalt salt, oxalic acid, sodium nitrate, ethane diacid, sodium saccharin, rear-earth salt and deionized water. The appearance and corrosion resistance of a passivation film are regulated by virtue of the rear-earth salt; the passivation film with silver-white appearance obtained after passivation is high in passivation quality, not only stable in performance but also high in corrosion resistance; moreover, trivalent chromium is relatively low in toxicity and high in environment friendliness, thereby completely conforming to the ROHS laws and regulations. A passivation method of the trivalent-chromium natural-color passivator with high corrosion resistance for the zinc-nickel alloy is simple in process and low in cost.
Description
Technical field
The present invention relates to metal finishing and guard technology field, be specifically related to the high anti-corrosion true qualities passivator of a kind of trivalent chromium for admiro.
Background technology
Along with development that is scientific and technological and modern industry, admiro is widely used in the industry such as automobile, motorcycle, computer.But traditional admiro passivation all adopts sexavalent chrome passivation technology, and sexavalent chrome is severe toxicity and easily carcinogenic material, and easily serious pollution is caused to environment, therefore, a lot of country has prohibitted the use sexavalent chrome passivating technique, and China also provided against and uses sexavalent chrome passivating technique in recent years.Therefore, low toxic and environment-friendly is developed and the good passivator of solidity to corrosion is the key determining that can admiro be used widely.At present, admiro passivation mainly concentrates on trivalent chromium colorful passivation and bright blue passivation, and on admiro, form Silvery Passivation film there is the larger market requirement, because the passivation of admiro true qualities is more difficult, still there is not admiro trivalent chromium true qualities passivator at present.
Summary of the invention
The present invention's first object provides a kind of trivalent chromium for admiro high anti-corrosion true qualities passivator for the deficiencies in the prior art, and it is stable performance not only, and solidity to corrosion is high, silvery-white appearance is presented after passivation, passivation quality is high, and chromic toxicity is lower, and the feature of environmental protection is high.
Another object of the present invention is to provide the passivating method of the high anti-corrosion true qualities passivator of a kind of trivalent chromium for admiro, and technique is simple, cost is low.
In order to realize above object, the invention provides following technical scheme:
The high anti-corrosion true qualities passivator of trivalent chromium for admiro, comprises the component of following concentration:
Preferably, the high anti-corrosion true qualities passivator of the trivalent chromium for admiro, comprises the component of following concentration:
Preferably, the high anti-corrosion true qualities passivator of the trivalent chromium for admiro, comprises the component of following concentration:
Wherein, described trivalent chromium is any one or the two or more mixture in chromium sulphate, chromium chloride, chromium nitrate.
Wherein, described cobalt salt is the mixture of any one or two kinds in Jing Ti/Bao Pian COBALT NITRATE CRYSTALS/FLAKES, rose vitriol.
Wherein, described rare-earth salts is the mixture of any one or two kinds in lanthanum trioxide, cerium oxide.
Trivalent chromium true qualities passivator described in application carries out the method for passivation to admiro, nickel content in described admiro is 8-15%, the pH of described trivalent chromium true qualities passivator is 3.5-4.0, passivation time is 10-30s, passivation temperature is 25-30 DEG C, and the pH of trivalent chromium true qualities passivator is regulated by ammoniacal liquor or sodium hydroxide.
Compared with prior art, the beneficial effect that the present invention has is: the high anti-corrosion true qualities passivator of the trivalent chromium for admiro of the present invention, comprise trivalent chromium, cobalt salt, oxalic acid, SODIUMNITRATE, oxalic acid, soluble saccharin, rare-earth salts, deionized water, it adopts rare-earth salts to adjust outward appearance and the solidity to corrosion of passive film, and obtain the passive film presenting silvery-white appearance after passivation, passivation quality is high, not only stable performance, solidity to corrosion is high, and chromic toxicity is lower, and the feature of environmental protection is high; The passivating method of the high anti-corrosion true qualities passivator of the trivalent chromium for admiro, technique is simple, cost is low.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail, but any limitation of the invention do not formed.
Embodiment 1.
The high anti-corrosion true qualities passivator 1L of trivalent chromium for admiro of the present embodiment, comprises chromium sulphate 1g, Jing Ti/Bao Pian COBALT NITRATE CRYSTALS/FLAKES 1g, oxalic acid 5g, SODIUMNITRATE 1g, oxalic acid 0.5g, soluble saccharin 1g, lanthanum trioxide 0.01g, adopts deionized water proportioning to form.
The trivalent chromium true qualities passivator of application the present embodiment carries out admiro passivation, and the nickel content of admiro is 9%, and the pH of described trivalent chromium true qualities passivator is 3.5, and passivation temperature is 25 DEG C, and passivation time is 18s, and the surface of the coating of acquisition is silvery white in color.
Embodiment 2.
The high anti-corrosion true qualities passivator 1L of trivalent chromium for admiro of the present embodiment, comprises chromium nitrate 6g, rose vitriol 2g, oxalic acid 8g, SODIUMNITRATE 3g, oxalic acid 1g, soluble saccharin 3g, cerium oxide 0.1g, adopts deionized water proportioning to form.
The trivalent chromium true qualities passivator of application the present embodiment carries out admiro passivation, and the nickel content of admiro is 8%, and the pH of described trivalent chromium true qualities passivator is 3.6, and passivation temperature is 27 DEG C, and passivation time is 15s, and the surface of the coating of acquisition is silvery white in color.
Embodiment 3.
The high anti-corrosion true qualities passivator 1L of trivalent chromium for admiro of the present embodiment, comprises chromium sulphate 8g, rose vitriol 3g, oxalic acid 10g, SODIUMNITRATE 4g, oxalic acid 3g, soluble saccharin 5g, lanthanum trioxide 0.3g, adopts deionized water proportioning to form.
The trivalent chromium true qualities passivator of application the present embodiment carries out admiro passivation, and the nickel content of admiro is 11%, and the pH of described trivalent chromium true qualities passivator is 3.7, and passivation temperature is 26 DEG C, and passivation time is 20s, and the surface of the coating of acquisition is silvery white in color.
Embodiment 4.
The high anti-corrosion true qualities passivator 1L of trivalent chromium for admiro of the present embodiment, comprises chromium nitrate 12g, Jing Ti/Bao Pian COBALT NITRATE CRYSTALS/FLAKES 4g, oxalic acid 12g, SODIUMNITRATE 5g, oxalic acid 5g, soluble saccharin 7g, cerium oxide 0.5g, adopts deionized water proportioning to form.
The trivalent chromium true qualities passivator of application the present embodiment carries out admiro passivation, and the nickel content of admiro is 12%, and the pH of described trivalent chromium true qualities passivator is 3.8, and passivation temperature is 28 DEG C, and passivation time is 30s, and the surface of the coating of acquisition is silvery white in color.
Embodiment 5.
The high anti-corrosion true qualities passivator 1L of trivalent chromium for admiro of the present embodiment, comprises chromium chloride 15g, rose vitriol 5g, oxalic acid 18g, SODIUMNITRATE 7g, oxalic acid 8g, soluble saccharin 8g, lanthanum trioxide 0.7g, adopts deionized water proportioning to form.
The trivalent chromium true qualities passivator of application the present embodiment carries out admiro passivation, and the nickel content of admiro is 13%, and the pH of described trivalent chromium true qualities passivator is 3.9, and passivation temperature is 29 DEG C, and passivation time is 25s, and the surface of the coating of acquisition is silvery white in color.
Embodiment 6.
The high anti-corrosion true qualities passivator 1L of trivalent chromium for admiro of the present embodiment, comprises chromium chloride 20g, Jing Ti/Bao Pian COBALT NITRATE CRYSTALS/FLAKES 6g, oxalic acid 20g, SODIUMNITRATE 8g, oxalic acid 10g, soluble saccharin 10g, cerium oxide 1g, adopts deionized water proportioning to form.
The trivalent chromium true qualities passivator of application the present embodiment carries out admiro passivation, and the nickel content of admiro is 15%, and the pH of described trivalent chromium true qualities passivator is 4.0, and passivation temperature is 30 DEG C, and passivation time is 10s, and the surface of the coating of acquisition is silvery white in color.
Admiro passivation coating obtained to embodiment 1-6 respectively carries out neutral salt spray accelerated corrosion test, and test-results is as shown in the table.
| Test period | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 |
| 460h | There is not white rust | --- | --- | --- | --- | --- |
| 480h | --- | There is not white rust | There is not white rust | There is not white rust | There is not white rust | --- |
| 500h | --- | --- | --- | --- | --- | There is not white rust |
| 1400h | --- | There is not red rust | --- | --- | --- | --- |
| 1500h | There is not red rust | --- | There is not red rust | There is not red rust | There is not red rust | There is not red rust |
Above test-results shows: the present invention is used for the high anti-corrosion true qualities passivator of trivalent chromium of admiro, the passive film presenting silvery-white appearance is obtained after passivation, fill up the market vacancy, and passivation quality is high, solidity to corrosion is high, does not occur white rust, do not occur red rust before 1400h before salt fog accelerated corrosion test 460h, stable performance, long service life.
The above embodiments are only the preferred embodiments of the present invention, can not limit interest field of the present invention with this, and therefore, the equivalent variations done according to the present patent application the scope of the claims, still belongs to the scope that the present invention is contained.
Claims (7)
1., for the high anti-corrosion true qualities passivator of trivalent chromium of admiro, it is characterized in that, comprise the component of following concentration:
2. the high anti-corrosion true qualities passivator of the trivalent chromium for admiro according to claim 1, is characterized in that, comprise the component of following concentration:
3. the high anti-corrosion true qualities passivator of the trivalent chromium for admiro according to claim 1, is characterized in that, comprise the component of following concentration:
4. the high anti-corrosion true qualities passivator of the trivalent chromium for admiro according to claim 1-3 any one, is characterized in that, described trivalent chromium is any one or two or more mixtures in chromium sulphate, chromium chloride, chromium nitrate.
5. the high anti-corrosion true qualities passivator of the trivalent chromium for admiro according to claim 1-3 any one, is characterized in that, described cobalt salt is the mixture of any one or two kinds in Jing Ti/Bao Pian COBALT NITRATE CRYSTALS/FLAKES, rose vitriol.
6. the high anti-corrosion true qualities passivator of the trivalent chromium for admiro according to claim 1-3 any one, is characterized in that, described rare-earth salts is the mixture of any one or two kinds in lanthanum trioxide, cerium oxide.
7. application rights requires that the trivalent chromium true qualities passivator described in 1-3 any one carries out the method for passivation to admiro, it is characterized in that, nickel content in described admiro is 8-15%, the pH of described trivalent chromium true qualities passivator is 3.5-4.0, passivation time is 10-30s, and passivation temperature is 25-30 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410741396.5A CN104451644A (en) | 2014-12-04 | 2014-12-04 | Trivalent-chromium natural-color passivator with high corrosion resistance for zinc-nickel alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410741396.5A CN104451644A (en) | 2014-12-04 | 2014-12-04 | Trivalent-chromium natural-color passivator with high corrosion resistance for zinc-nickel alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104451644A true CN104451644A (en) | 2015-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410741396.5A Pending CN104451644A (en) | 2014-12-04 | 2014-12-04 | Trivalent-chromium natural-color passivator with high corrosion resistance for zinc-nickel alloy |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107699882A (en) * | 2017-09-27 | 2018-02-16 | 荆门市拓达科技有限公司 | A kind of containing rare earth cerium rust-proof metal treatment fluid and preparation method thereof |
| CN108166031A (en) * | 2018-02-09 | 2018-06-15 | 广州超邦化工有限公司 | A kind of preparation method of zinc alloy cyanide-free cadmium plating environment-friendly type coating structure |
| CN108179447A (en) * | 2018-02-26 | 2018-06-19 | 广州超邦化工有限公司 | The preparation method of non-cyanide plating cadmium coater structure on a kind of alloy matrix aluminum |
| CN110172689A (en) * | 2019-05-09 | 2019-08-27 | 东北大学 | A kind of room temperature zinc layers trivalent chromium colorful inactivating treatment liquid and preparation and application |
| CN115354372A (en) * | 2022-08-22 | 2022-11-18 | 浙江汉格科技有限公司 | A corrosion-resistant coating for EMU brake pads and preparation method thereof |
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| CN102312238A (en) * | 2011-09-28 | 2012-01-11 | 中国计量学院 | Preparation of zinc nickel plating layer and trivalent chromium passivation process thereof |
| CN102912338A (en) * | 2012-10-18 | 2013-02-06 | 王宏 | Aluminium alloy trivalent chromium passivation solution as well as preparation method and passivation technology thereof |
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2014
- 2014-12-04 CN CN201410741396.5A patent/CN104451644A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312238A (en) * | 2011-09-28 | 2012-01-11 | 中国计量学院 | Preparation of zinc nickel plating layer and trivalent chromium passivation process thereof |
| CN102912338A (en) * | 2012-10-18 | 2013-02-06 | 王宏 | Aluminium alloy trivalent chromium passivation solution as well as preparation method and passivation technology thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107699882A (en) * | 2017-09-27 | 2018-02-16 | 荆门市拓达科技有限公司 | A kind of containing rare earth cerium rust-proof metal treatment fluid and preparation method thereof |
| CN108166031A (en) * | 2018-02-09 | 2018-06-15 | 广州超邦化工有限公司 | A kind of preparation method of zinc alloy cyanide-free cadmium plating environment-friendly type coating structure |
| CN108166031B (en) * | 2018-02-09 | 2024-05-03 | 广州超邦化工有限公司 | Preparation method of environment-friendly zinc alloy cyanide-free cadmium plating layer structure |
| CN108179447A (en) * | 2018-02-26 | 2018-06-19 | 广州超邦化工有限公司 | The preparation method of non-cyanide plating cadmium coater structure on a kind of alloy matrix aluminum |
| CN108179447B (en) * | 2018-02-26 | 2023-12-19 | 广州超邦化工有限公司 | Preparation method of cyanide-free cadmium plating layer structure on aluminum alloy substrate |
| CN110172689A (en) * | 2019-05-09 | 2019-08-27 | 东北大学 | A kind of room temperature zinc layers trivalent chromium colorful inactivating treatment liquid and preparation and application |
| CN115354372A (en) * | 2022-08-22 | 2022-11-18 | 浙江汉格科技有限公司 | A corrosion-resistant coating for EMU brake pads and preparation method thereof |
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