CN107236948A - It is a kind of to suppress the passivator that zinc coating trivalent chromium is oxidized to Cr VI - Google Patents
It is a kind of to suppress the passivator that zinc coating trivalent chromium is oxidized to Cr VI Download PDFInfo
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- CN107236948A CN107236948A CN201710421758.6A CN201710421758A CN107236948A CN 107236948 A CN107236948 A CN 107236948A CN 201710421758 A CN201710421758 A CN 201710421758A CN 107236948 A CN107236948 A CN 107236948A
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- passivator
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- oxidized
- trivalent chromium
- zinc coating
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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
- C23C22/68—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
-
- 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
- C23C22/48—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 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
- C23C22/53—Treatment of zinc or alloys based thereon
-
- 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
Abstract
Suppress the passivator that zinc coating trivalent chromium is oxidized to Cr VI the invention discloses a kind of, it is made up of the raw material of following mass parts：Chromic salt：80~100 parts；Other metal salts：10~20 parts；Oxidant：30~40 parts；Film forming accelerating：10~20 parts；Complexing agent：10~20 parts；Wetting agent：1~5 part；Inhibitor：1~5 part；Water：200 parts.The trivalent chromium oxidation that the passivator of the present invention can effectively suppress to be passivated in part is Cr VI, and passivation part is placed even if long-time will not also produce poisonous and hazardous Cr VI, comply fully with the regulation of RoHS and China's relevant laws and regulations.
Description
Technical field
Suppress the passivator that zinc coating trivalent chromium is oxidized to Cr VI the present invention relates to a kind of.
Background technology
RoHS, full name " instruction for using some harmful components in electronic and electrical equipment on being limited in ", in July, 2006
Formal implementation on the 1st, it is therefore intended that eliminate lead, mercury, cadmium, Cr VI, PBBs and the PBDEs in electric equipment products
Totally 6 materials, make electric equipment products advantageously in health and environmental protection.On 2 18th, 2006, China was by information
Estate Division, which is taken the lead, has also put into effect corresponding regulation, since 1 day March in 2007 in the market electronics and electric equipment this 6
Harmful substance is planted to be supervised.
At present, many electronics and electric equipment are required for carrying out electrogalvanizing processing, the main flow passivator used on the market
All it is the not chromyl passivating agent products based on trivalent chromium mostly.However, at by existing trivalent chromium passivator
Micro Cr VI occurs after a period of time is placed in the passivation part managed in passivation layer, and with the extension of standing time,
Content of 6-valence Cr ions can gradually increase, and this is all unfavorable for health and environmental protection.
Therefore, it is necessary to develop a kind of trivalent chromium oxidation that can suppress in zinc coat into the passivator of Cr VI.
The content of the invention
Suppress the passivator that zinc coating trivalent chromium is oxidized to Cr VI it is an object of the invention to provide a kind of.
The technical solution used in the present invention is：
It is a kind of to suppress the passivator that zinc coating trivalent chromium is oxidized to Cr VI, it is made up of the raw material of following mass parts：
Chromic salt：80~100 parts；
Other metal salts：10~20 parts；
Oxidant：30~40 parts；
Film forming accelerating：10~20 parts；
Complexing agent：10~20 parts；
Wetting agent：1~5 part；
Inhibitor：1~5 part；
Water：200 parts.
Described chromic salt is at least one of chromium sulfate, chromic nitrate, chromium chloride, six hydration chromic bromides.
Described other metal salts are at least one of nickel sulfate, cobaltous sulfate, cerous nitrate.
Described oxidant is at least one of sodium nitrate, potassium nitrate, nitric acid.
Described film forming accelerating is at least one of sulfuric acid, sodium sulphate.
Described complexing agent is at least one of citric acid, malonic acid, ammonium acid fluoride, sodium fluoride, sodium potassium tartrate tetrahydrate.
Described wetting agent is at least one of APES, polyoxyethylene aliphatic alcohol ether.
Described inhibitor is at least one of sodium sulfite, sodium hydrogensulfite, thiourea dioxide.
The beneficial effects of the invention are as follows：The trivalent chromium oxidation that the passivator of the present invention can effectively suppress to be passivated in part is six
Valency chromium, passivation part is placed even if long-time will not also produce poisonous and hazardous Cr VI, comply fully with RoHS and China's correlation method
The regulation of Laws ＆ Regulations.
Embodiment
It is a kind of to suppress the passivator that zinc coating trivalent chromium is oxidized to Cr VI, it is made up of the raw material of following mass parts：
Chromic salt：80~100 parts；
Other metal salts：10~20 parts；
Oxidant：30~40 parts；
Film forming accelerating：10~20 parts；
Complexing agent：10~20 parts；
Wetting agent：1~5 part；
Inhibitor：1~5 part；
Water：200 parts.
It is preferred that, described chromic salt is at least one of chromium sulfate, chromic nitrate, chromium chloride, six hydration chromic bromides.
It is preferred that, described other metal salts are at least one of nickel sulfate, cobaltous sulfate, cerous nitrate.
It is preferred that, described oxidant is at least one of sodium nitrate, potassium nitrate, nitric acid.
It is preferred that, described film forming accelerating is at least one of sulfuric acid, sodium sulphate.
It is preferred that, described complexing agent be in citric acid, malonic acid, ammonium acid fluoride, sodium fluoride, sodium potassium tartrate tetrahydrate at least
It is a kind of.
It is preferred that, described wetting agent is at least one of APES, polyoxyethylene aliphatic alcohol ether.
It is preferred that, described inhibitor is at least one of sodium sulfite, sodium hydrogensulfite, thiourea dioxide.
The present invention is made further explanation and description with reference to specific embodiment.
Embodiment 1：
A kind of to suppress the passivator that zinc coating trivalent chromium is oxidized to Cr VI, its raw material composition is as shown in the table：
Table 1 is a kind of to suppress the raw material composition table that zinc coating trivalent chromium is oxidized to the passivator of Cr VI
| Raw material | Mass parts |
| Chromic nitrate | 90 |
| Nickel sulfate | 13 |
| Sodium nitrate | 35 |
| Sodium sulphate | 15 |
| Ammonium acid fluoride | 12 |
| Polyoxyethylene aliphatic alcohol ether | 2 |
| Sodium sulfite | 2 |
| Pure water | 200 |
Embodiment 2：
A kind of to suppress the passivator that zinc coating trivalent chromium is oxidized to Cr VI, its raw material composition is as shown in the table：
Table 2 is a kind of to suppress the raw material composition table that zinc coating trivalent chromium is oxidized to the passivator of Cr VI
| Raw material | Mass parts |
| Chromium sulfate | 95 |
| Cobaltous sulfate | 13 |
| Sodium nitrate | 30 |
| Sodium sulphate | 20 |
| Citric acid | 13 |
| APES | 2 |
| Sodium hydrogensulfite | 5 |
| Pure water | 200 |
Embodiment 3：
A kind of to suppress the passivator that zinc coating trivalent chromium is oxidized to Cr VI, its raw material composition is as shown in the table：
Table 3 is a kind of to suppress the raw material composition table that zinc coating trivalent chromium is oxidized to the passivator of Cr VI
Embodiment 4：
A kind of to suppress the passivator that zinc coating trivalent chromium is oxidized to Cr VI, its raw material composition is as shown in the table：
Table 4 is a kind of to suppress the raw material composition table that zinc coating trivalent chromium is oxidized to the passivator of Cr VI
| Raw material | Mass parts |
| Six hydration chromic bromides | 80 |
| Cerous nitrate | 20 |
| Nitric acid | 35 |
| Sulfuric acid | 10 |
| Sodium potassium tartrate tetrahydrate | 10 |
| Polyoxyethylene aliphatic alcohol ether | 1 |
| Thiourea dioxide | 1 |
| Pure water | 200 |
Embodiment 5：
A kind of to suppress the passivator that zinc coating trivalent chromium is oxidized to Cr VI, its raw material composition is as shown in the table：
Table 5 is a kind of to suppress the raw material composition table that zinc coating trivalent chromium is oxidized to the passivator of Cr VI
| Raw material | Mass parts |
| Chromium sulfate | 100 |
| Nickel sulfate | 15 |
| Potassium nitrate | 40 |
| Sodium sulphate | 15 |
| Malonic acid | 20 |
| APES | 5 |
| Thiourea dioxide | 3 |
| Pure water | 200 |
Test case：
The passivator and certain commercially available passivator that embodiment 1~5 is respectively adopted are passivated processing to galvanized part, then put naturally
Put, the content of 6-valence Cr ions in real-time testing galvanized part, test result is as shown in the table：
Content of 6-valence Cr ions in the treated galvanized part of passivator and certain commercially available passivator of the table 6 Jing Guo embodiment 1~5
As shown in Table 6：The galvanized part that passivator by the present invention is treated also does not go out after placing 3 months
Show trivalent chromium oxidation into the situation of Cr VI, passivation effect is excellent；However, the galvanized part treated by certain commercially available passivator exists
Place after a period of time, micro Cr VI can be produced, and as the content of the extension Cr VI of standing time can gradually increase.
Above-described embodiment is preferably embodiment, but embodiments of the present invention are not by above-described embodiment of the invention
Limitation, other any Spirit Essences without departing from the present invention and the change made under principle, modification, replacement, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (8)
1. a kind of suppress the passivator that zinc coating trivalent chromium is oxidized to Cr VI, it is characterised in that：By the raw material of following mass parts
Composition：
Chromic salt：80~100 parts；
Other metal salts：10~20 parts；
Oxidant：30~40 parts；
Film forming accelerating：10~20 parts；
Complexing agent：10~20 parts；
Wetting agent：1~5 part；
Inhibitor：1~5 part；
Water：200 parts.
2. a kind of suppression zinc coating trivalent chromium according to claim 1 is oxidized to the passivator of Cr VI, it is characterised in that：
Described chromic salt is at least one of chromium sulfate, chromic nitrate, chromium chloride, six hydration chromic bromides.
3. a kind of suppression zinc coating trivalent chromium according to claim 2 is oxidized to the passivator of Cr VI, it is characterised in that：
Described other metal salts are at least one of nickel sulfate, cobaltous sulfate, cerous nitrate.
4. a kind of suppression zinc coating trivalent chromium according to any one in claims 1 to 3 is oxidized to the passivation of Cr VI
Agent, it is characterised in that：Described oxidant is at least one of sodium nitrate, potassium nitrate, nitric acid.
5. a kind of suppression zinc coating trivalent chromium according to claim 4 is oxidized to the passivator of Cr VI, it is characterised in that：
Described film forming accelerating is at least one of sulfuric acid, sodium sulphate.
6. a kind of suppression zinc coating trivalent chromium according to claim 4 is oxidized to the passivator of Cr VI, it is characterised in that：
Described complexing agent is at least one of citric acid, malonic acid, ammonium acid fluoride, sodium fluoride, sodium potassium tartrate tetrahydrate.
7. a kind of suppression zinc coating trivalent chromium according to claim 4 is oxidized to the passivator of Cr VI, it is characterised in that：
Described wetting agent is at least one of APES, polyoxyethylene aliphatic alcohol ether.
8. a kind of suppression zinc coating trivalent chromium according to claim 4 is oxidized to the passivator of Cr VI, it is characterised in that：
Described inhibitor is at least one of sodium sulfite, sodium hydrogensulfite, thiourea dioxide.
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| CN201710421758.6A CN107236948B (en) | 2017-06-07 | 2017-06-07 | A kind of passivator for inhibiting zinc coating trivalent chromium to be oxidized to Cr VI |
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| CN201710421758.6A CN107236948B (en) | 2017-06-07 | 2017-06-07 | A kind of passivator for inhibiting zinc coating trivalent chromium to be oxidized to Cr VI |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109267056A (en) * | 2018-11-26 | 2019-01-25 | 武汉风帆电化科技股份有限公司 | Admiro trivalent chromium black passivator and its preparation process |
| CN109536940A (en) * | 2018-12-19 | 2019-03-29 | 广州传福化学技术有限公司 | A kind of zinc-plated passivator and Zincing passivation method |
| 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 |
| CN110205616A (en) * | 2019-06-27 | 2019-09-06 | 安徽鼎旺环保材料科技有限公司 | Ferrous metal passivator and preparation method thereof |
| CN111364034A (en) * | 2020-02-18 | 2020-07-03 | 广州传福化学技术有限公司 | Nitrogen-free galvanized trivalent chromium color passivator and preparation method thereof |
| CN111394688A (en) * | 2020-04-29 | 2020-07-10 | 郑州中原利达新材料有限公司 | Trivalent chromium passivation solution for powder zinc impregnation process |
| CN113088952A (en) * | 2021-04-16 | 2021-07-09 | 上海昕沐化学科技有限公司 | Trivalent chromium passivator for galvanized material and preparation method and use method thereof |
| CN113201730A (en) * | 2021-05-08 | 2021-08-03 | 遵义智通金属表面技术处理有限公司 | Automatic line galvanizing color passivation method |
| CN114959674A (en) * | 2022-06-14 | 2022-08-30 | 广东比格莱科技有限公司 | Trivalent chromium blue zinc water and preparation method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109267056A (en) * | 2018-11-26 | 2019-01-25 | 武汉风帆电化科技股份有限公司 | Admiro trivalent chromium black passivator and its preparation process |
| CN109536940A (en) * | 2018-12-19 | 2019-03-29 | 广州传福化学技术有限公司 | A kind of zinc-plated passivator and Zincing passivation method |
| 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 |
| CN110205616A (en) * | 2019-06-27 | 2019-09-06 | 安徽鼎旺环保材料科技有限公司 | Ferrous metal passivator and preparation method thereof |
| CN111364034A (en) * | 2020-02-18 | 2020-07-03 | 广州传福化学技术有限公司 | Nitrogen-free galvanized trivalent chromium color passivator and preparation method thereof |
| CN111394688A (en) * | 2020-04-29 | 2020-07-10 | 郑州中原利达新材料有限公司 | Trivalent chromium passivation solution for powder zinc impregnation process |
| CN113088952A (en) * | 2021-04-16 | 2021-07-09 | 上海昕沐化学科技有限公司 | Trivalent chromium passivator for galvanized material and preparation method and use method thereof |
| CN113088952B (en) * | 2021-04-16 | 2023-01-10 | 上海昕沐化学科技有限公司 | Trivalent chromium passivator for galvanized material and preparation method and use method thereof |
| CN113201730A (en) * | 2021-05-08 | 2021-08-03 | 遵义智通金属表面技术处理有限公司 | Automatic line galvanizing color passivation method |
| CN114959674A (en) * | 2022-06-14 | 2022-08-30 | 广东比格莱科技有限公司 | Trivalent chromium blue zinc water and preparation method thereof |
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|---|---|
| CN107236948B (en) | 2019-02-22 |
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Denomination of invention: Passivator for inhibiting trivalent chromium of zinc coating from being oxidized to hexavalent chromium Effective date of registration: 20200327 Granted publication date: 20190222 Pledgee: Bank of China Co., Ltd. Nansha Branch of Guangdong Free Trade Pilot Area Pledgor: GUANGZHOU CHUANFU CHEMICAL TECHNOLOGY Co.,Ltd. Registration number: Y2020440000061 |
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Date of cancellation: 20210420 Granted publication date: 20190222 Pledgee: Bank of China Co.,Ltd. Nansha Branch of Guangdong Free Trade Pilot Area Pledgor: GUANGZHOU CHUANFU CHEMICAL TECHNOLOGY Co.,Ltd. Registration number: Y2020440000061 |