CN107164750A - A kind of rare-earth salt passivation liquid and preparation method thereof - Google Patents
A kind of rare-earth salt passivation liquid and preparation method thereof Download PDFInfo
- Publication number
- CN107164750A CN107164750A CN201710320716.3A CN201710320716A CN107164750A CN 107164750 A CN107164750 A CN 107164750A CN 201710320716 A CN201710320716 A CN 201710320716A CN 107164750 A CN107164750 A CN 107164750A
- Authority
- CN
- China
- Prior art keywords
- rare
- earth salt
- passivation liquid
- salt passivation
- earth
- 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
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
- C23C22/07—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
Abstract
The embodiment of the invention discloses a kind of rare-earth salt passivation liquid and preparation method thereof, it is related to metal surface material processing technology field.The rare-earth salt passivation liquid is prepared from by following raw material：Rare-earth salts, sodium metasilicate, organosilan, metal chelating agent, phosphoric acid, acids complexing agent, ethylene glycol, disodium ethylene diamine tetraacetate, water.Present invention addition rare-earth salts, improves the corrosion resistance of passivation layer so that corrosion electric current density declines, polarization resistance rise, and clean environment firendly, reliable and stable without toxicant.
Description
Technical field
The present invention relates to metal surface material processing technology field, more particularly to a kind of rare-earth salt passivation liquid and its preparation side
Method.
Background technology
Passivation makes the decay resistance of coating further improve and increases lustrous surface and resistant to pollution ability.As passed through
The workpiece surface of the processing such as chemical plating, plating, pickling, washing is very active, so to be passivated processing immediately, makes after processing
Metal surface formed layer protecting film, slow down corrosion.Comprehensive Passivation Treatment is carried out to workpiece, its corrosion resistance can be improved
Can, increase the service life.It is chromating that metal surface, which is passivated processing usually used,.Chromate passivation film is fine and close,
Itself anti-corrosion, firm binding force with parent metal, and the metal surface of naked leak being again passivated again, to further
Corrosion serves inhibitory action, i.e., usually said " self-healing ability ".However, hexavalent chromium compound has very high toxicity, it is to cause
Cancer material.With the enhancing of people's environmental protection consciousness, the control for venomous injurant is increasingly strengthened.Therefore, many substitute
The countermeasure and technique of Cr VI are widely put forward.
Rare-earth salts turns into current passivation technology developing direction with the composite membrane that organosilan is handled, and increasing research refers to
Go out rare-earth salts passivating film its corrosion resistance to approach, reach, the performance of super many sexavalence chromium passivation films.
The content of the invention
Embodiments of the invention provide a kind of rare-earth salt passivation liquid and preparation method thereof, and passivation corrosion resistance is strong, and cleans
Environmental protection, it is reliable and stable without toxicant.
To reach above-mentioned purpose, embodiments of the invention are adopted the following technical scheme that：
Embodiments of the invention provide a kind of rare-earth salt passivation liquid, including following raw material is prepared from：Rare-earth salts, sodium metasilicate,
Organosilan, metal chelating agent, phosphoric acid, acids complexing agent, ethylene glycol, disodium ethylene diamine tetraacetate, water.
Further, the rare-earth salt passivation liquid is prepared from by the raw material of following number：Rare-earth salts 15-30g/L, silicon
Sour sodium 5-15g/L, organosilan 0.5-15g/L, metal chelating agent 3-8g/L, phosphatase 11 0-30mL/L, acids complexing agent 5-10g/
L, ethylene glycol 10-20g/L, disodium ethylene diamine tetraacetate 5-15g/L, remaining is water.
Further, the rare-earth salts is cerous nitrate, cerous chlorate, one or more mixtures of cerous sulfate.
Further, the organosilan be 1-hydroxy ethylidene-1,1-diphosphonic acid, 3- aminopropyls three chloro silane, HAS,
One kind in γ-glycidyl ether oxygen propyl trimethoxy silicane.
Further, the metal chelating agent is one kind in sodium molybdate, potassium fluotitanate, palladium bichloride, cobalt nitrate, cerous nitrate
Or a variety of mixtures.
Further, the acids complexing agent is one kind in tannic acid, citric acid or tartaric acid.
Present invention also offers a kind of preparation method of rare-earth salt passivation liquid, including：
S1, sodium metasilicate is dissolved in suitable quantity of water, adds phosphoric acid and rare-earth salts, stir, and be heated to 30-60 DEG C；
S2, by disodium ethylene diamine tetraacetate, ethylene glycol, metal chelating agent is dissolved in suitable quantity of water, add organosilan, in 30-
Stirred 20-40 minutes under the conditions of 60 DEG C；
S3, the solution for obtaining step 1 are mixed with the solution that step 2 is obtained, and are stirred 90-120 minutes, with dilute sulfuric acid or hydroxide
Sodium solution adjusts pH1.5-3.0, obtains the rare-earth salt passivation liquid.
Further, the dilute sulfuric acid is 0.5-1.0mol/L dilute sulfuric acid.
Further, the sodium hydroxide solution is 0.5-1.0mol/L sodium hydroxide solution.
A kind of rare-earth salt passivation liquid provided in an embodiment of the present invention and preparation method thereof, with advantages below：
（1）Preparation technology simple possible, low production cost；（2）It is environmentally friendly without chromium；（3）Add rare-earth salts, polarization
Resistance is raised, and corrosion electric current density declines；（4）Good passivation effect, corrosion resistance is strong.
Embodiment
To make those skilled in the art more fully understand technical scheme, with reference to embodiment to this
Invention is described in further detail.
Embodiment 1
A kind of rare-earth salt passivation liquid, is prepared from by the raw material of following number：Cerous nitrate 15-20g/L, sodium metasilicate 5-8g/L,
3- aminopropyls three chloro silane 0.5-5g/L, palladium bichloride 3-4g/L, phosphatase 11 0-15mL/L, citric acid 5-8g/L, ethylene glycol
10-15g/L, disodium ethylene diamine tetraacetate 5-8g/L, remaining is water.
A kind of rare-earth salt passivation liquid preparation method, including：
S1, sodium metasilicate is dissolved in suitable quantity of water, adds phosphoric acid and cerous nitrate, stir, and be heated to 30 DEG C；
S2, by disodium ethylene diamine tetraacetate, ethylene glycol, palladium bichloride is dissolved in suitable quantity of water, adds the chloro silicon of 3- aminopropyls three
Alkane, is stirred 40 minutes under the conditions of 30 DEG C；
S3, the solution for obtaining step 1 are mixed with the solution that step 2 is obtained, and are stirred 120 minutes, with 0.5mol/L dilute sulfuric acids or
0.5mol/L sodium hydroxide solutions adjust pH to 1.8, obtain the rare-earth salt passivation liquid.
Embodiment 2
A kind of rare-earth salt passivation liquid, is prepared from by the raw material of following number：Cerous nitrate 15-20g/L, sodium metasilicate 5-8g/L,
3- aminopropyls three chloro silane 0.5-5g/L, palladium bichloride 3-4g/L, phosphatase 11 0-15mL/L, citric acid 5-8g/L, ethylene glycol
10-15g/L, disodium ethylene diamine tetraacetate 5-8g/L, remaining is water.
A kind of rare-earth salt passivation liquid preparation method, including：
S1, sodium metasilicate is dissolved in suitable quantity of water, adds phosphoric acid, stir, and be heated to 60 DEG C；
S2, by disodium ethylene diamine tetraacetate, ethylene glycol, palladium bichloride is dissolved in suitable quantity of water, adds the chloro silicon of 3- aminopropyls three
Alkane, is stirred 20 minutes under the conditions of 60 DEG C；
S3, the solution for obtaining step 1 are mixed with the solution that step 2 is obtained, and are stirred 100 minutes, with 0.8mol/L dilute sulfuric acids or
0.8mol/L sodium hydroxide solutions adjust pH to 2.8, obtain the rare-earth salt passivation liquid.
Embodiment 3
A kind of rare-earth salt passivation liquid, is prepared from by the raw material of following number：Cerous nitrate 20-25g/L, sodium metasilicate 8-10g/L,
3- aminopropyls three chloro silane 5-10g/L, palladium bichloride 4-6g/L, phosphatase 11 5-20mL/L, citric acid 5-8g/L, ethylene glycol 10-
15g/L, disodium ethylene diamine tetraacetate 8-10g/L, remaining is water.
A kind of rare-earth salt passivation liquid preparation method, including：
S1, sodium metasilicate is dissolved in suitable quantity of water, adds phosphoric acid and cerous nitrate, stir, and be heated to 30 DEG C；
S2, by disodium ethylene diamine tetraacetate, ethylene glycol, palladium bichloride is dissolved in suitable quantity of water, adds the chloro silicon of 3- aminopropyls three
Alkane, is stirred 40 minutes under the conditions of 30 DEG C；
S3, the solution for obtaining step 1 are mixed with the solution that step 2 is obtained, and are stirred 120 minutes, with 0.5mol/L dilute sulfuric acids or
0.5mol/L sodium hydroxide solutions adjust pH to 1.8, obtain the rare-earth salt passivation liquid.
Embodiment 4
A kind of rare-earth salt passivation liquid, is prepared from by the raw material of following number：Cerous nitrate 20-25g/L, sodium metasilicate 8-10g/L,
3- aminopropyls three chloro silane 5-10g/L, palladium bichloride 4-6g/L, phosphatase 11 5-20mL/L, citric acid 5-8g/L, ethylene glycol 10-
15g/L, disodium ethylene diamine tetraacetate 8-10g/L, remaining is water.
A kind of rare-earth salt passivation liquid preparation method, including：
S1, sodium metasilicate is dissolved in suitable quantity of water, adds phosphoric acid and cerous nitrate, stir, and be heated to 60 DEG C；
S2, by disodium ethylene diamine tetraacetate, ethylene glycol, palladium bichloride is dissolved in suitable quantity of water, adds the chloro silicon of 3- aminopropyls three
Alkane, is stirred 20 minutes under the conditions of 60 DEG C；
S3, the solution for obtaining step 1 are mixed with the solution that step 2 is obtained, and are stirred 100 minutes, with 0.8mol/L dilute sulfuric acids or
0.8mol/L sodium hydroxide solutions adjust pH to 2.8, obtain the rare-earth salt passivation liquid.
Embodiment 5
A kind of rare-earth salt passivation liquid, is prepared from by the raw material of following number：Cerous nitrate 25-30g/L, sodium metasilicate 10-15g/
L, 3- aminopropyl three chloro silane 10-15g/L, palladium bichloride 6-8g/L, phosphoric acid 20-30mL/L, citric acid 8-10g/L, second two
Alcohol 15-20g/L, disodium ethylene diamine tetraacetate 10-15g/L, remaining is water.
A kind of rare-earth salt passivation liquid preparation method, including：
S1, sodium metasilicate is dissolved in suitable quantity of water, adds phosphoric acid and cerous nitrate, stir, and be heated to 30 DEG C；
S2, by disodium ethylene diamine tetraacetate, ethylene glycol, palladium bichloride is dissolved in suitable quantity of water, adds the chloro silicon of 3- aminopropyls three
Alkane, is stirred 40 minutes under the conditions of 30 DEG C；
S3, the solution for obtaining step 1 are mixed with the solution that step 2 is obtained, and are stirred 120 minutes, with 0.5mol/L dilute sulfuric acids or
0.5mol/L sodium hydroxide solutions adjust pH to 1.8, obtain the rare-earth salt passivation liquid.
Embodiment 6
A kind of rare-earth salt passivation liquid, is prepared from by the raw material of following number：Cerous nitrate 25-30g/L, sodium metasilicate 10-15g/
L, 3- aminopropyl three chloro silane 10-15g/L, palladium bichloride 6-8g/L, phosphoric acid 20-30mL/L, citric acid 8-10g/L, second two
Alcohol 15-20g/L, disodium ethylene diamine tetraacetate 10-15g/L, remaining is water.
A kind of rare-earth salt passivation liquid preparation method, including：
S1, sodium metasilicate is dissolved in suitable quantity of water, adds phosphoric acid and cerous nitrate, stir, and be heated to 60 DEG C；
S2, by disodium ethylene diamine tetraacetate, ethylene glycol, palladium bichloride is dissolved in suitable quantity of water, adds the chloro silicon of 3- aminopropyls three
Alkane, is stirred 20 minutes under the conditions of 60 DEG C；
S3, the solution for obtaining step 1 are mixed with the solution that step 2 is obtained, and are stirred 100 minutes, with 0.8mol/L dilute sulfuric acids or
0.8mol/L sodium hydroxide solutions adjust pH to 2.8, obtain the rare-earth salt passivation liquid.
Each embodiment in this specification is described by the way of progressive, identical similar portion between each embodiment
Divide mutually referring to what each embodiment was stressed is the difference with other embodiment.It is real especially for equipment
Apply for example, because it is substantially similar to embodiment of the method, so describing fairly simple, related part is referring to embodiment of the method
Part explanation.The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited to
This, any one skilled in the art the invention discloses technical scope in, the change that can readily occur in or replace
Change, should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claim
Enclose and be defined.
Claims (9)
1. a kind of rare-earth salt passivation liquid, it is characterised in that be prepared from including following raw material：Rare-earth salts, sodium metasilicate, organosilicon
Alkane, metal chelating agent, phosphoric acid, acids complexing agent, ethylene glycol, disodium ethylene diamine tetraacetate, water.
2. a kind of rare-earth salt passivation liquid according to claim 1, it is characterised in that the raw material including following number prepare and
Into：Rare-earth salts 15-30g/L, sodium metasilicate 5-15g/L, organosilan 0.5-15g/L, metal chelating agent 3-8g/L, phosphatase 11 0-
30mL/L, acids complexing agent 5-10g/L, ethylene glycol 10-20g/L, disodium ethylene diamine tetraacetate 5-15g/L, remaining is water.
3. a kind of rare-earth salt passivation liquid according to claim 1, it is characterised in that the rare-earth salts is cerous nitrate, chlorine
Change sub- cerium, one or more mixtures of cerous sulfate.
4. a kind of rare-earth salt passivation liquid according to claim 1, it is characterised in that the organosilan is hydroxy ethylidene two
The one kind of phosphoric acid, 3- aminopropyls three in chloro silane, HAS, γ-glycidyl ether oxygen propyl trimethoxy silicane.
5. a kind of rare-earth salt passivation liquid according to claim 1, it is characterised in that the metal chelating agent be sodium molybdate,
One or more mixtures in potassium fluotitanate, palladium bichloride, cobalt nitrate, cerous nitrate.
6. a kind of rare-earth salt passivation liquid according to claim 1, it is characterised in that the acids complexing agent be tannic acid,
One kind in citric acid or tartaric acid.
7. a kind of rare-earth salt passivation liquid preparation method, it is characterised in that comprise the following steps：
S1, sodium metasilicate is dissolved in suitable quantity of water, adds phosphoric acid and rare-earth salts, stir, and be heated to 30-60 DEG C；
S2, by disodium ethylene diamine tetraacetate, ethylene glycol, metal chelating agent is dissolved in suitable quantity of water, add organosilan, in 30-
Stirred 20-40 minutes under the conditions of 60 DEG C；
S3, the solution for obtaining step 1 are mixed with the solution that step 2 is obtained, and are stirred 90-120 minutes, with dilute sulfuric acid or hydroxide
Sodium solution adjusts pH1.5-3.0, obtains the rare-earth salt passivation liquid.
8. a kind of rare-earth salt passivation liquid preparation method according to claim 7, it is characterised in that the dilute sulfuric acid is 0.5-
1.0mol/L dilute sulfuric acid.
9. a kind of rare-earth salt passivation liquid preparation method according to claim 7, it is characterised in that the sodium hydroxide solution
It is 0.5-1.0mol/L sodium hydroxide solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710320716.3A CN107164750A (en) | 2017-05-09 | 2017-05-09 | A kind of rare-earth salt passivation liquid and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710320716.3A CN107164750A (en) | 2017-05-09 | 2017-05-09 | A kind of rare-earth salt passivation liquid and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107164750A true CN107164750A (en) | 2017-09-15 |
Family
ID=59812633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710320716.3A Pending CN107164750A (en) | 2017-05-09 | 2017-05-09 | A kind of rare-earth salt passivation liquid and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107164750A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107858674A (en) * | 2017-11-14 | 2018-03-30 | 蚌埠市嘉实机电设备制造有限公司 | A kind of inorganic acid passivating solution |
| CN108998785A (en) * | 2018-07-19 | 2018-12-14 | 广东顺德中海源富环保科技有限公司 | The agent of Chrome-free passivation for stainless steel and the passivating method for utilizing the Chrome-free passivation for stainless steel agent |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104561970A (en) * | 2014-12-31 | 2015-04-29 | 苏州禾川化学技术服务有限公司 | Corrosion-resistant magnesium aluminum alloy chromium-free passivation solution |
-
2017
- 2017-05-09 CN CN201710320716.3A patent/CN107164750A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104561970A (en) * | 2014-12-31 | 2015-04-29 | 苏州禾川化学技术服务有限公司 | Corrosion-resistant magnesium aluminum alloy chromium-free passivation solution |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107858674A (en) * | 2017-11-14 | 2018-03-30 | 蚌埠市嘉实机电设备制造有限公司 | A kind of inorganic acid passivating solution |
| CN108998785A (en) * | 2018-07-19 | 2018-12-14 | 广东顺德中海源富环保科技有限公司 | The agent of Chrome-free passivation for stainless steel and the passivating method for utilizing the Chrome-free passivation for stainless steel agent |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105779984A (en) | Chromate-free passivation agent for aluminum alloy | |
| CN105779988A (en) | Chromate-free passivation solution for electroplated zinc and passivation technology thereof | |
| JP2009097093A (en) | Method for producing surface-treated metal material and method for producing metal coated article | |
| CN102220577B (en) | Organic and inorganic composite aqueous surface treatment liquid for color coating pretreatment of galvanized sheet | |
| TW200417420A (en) | Chemical conversion coating agent and surface-treated metal | |
| CN104988563A (en) | Silane-nanoceramic composite surface conditioning agent | |
| JP2009138132A (en) | Surface-treating aqueous solution and treatment method for forming corrosion-resistant coating film over zinc or zinc alloy deposit | |
| CN105755456B (en) | A kind of alkaline passivation liquid | |
| WO2017028438A1 (en) | Chromium-free passivator with hydrophobic surface property for plated metal | |
| CN101660153A (en) | Surface pretreatment agent before metal coating and preparation method and use method thereof | |
| CN104451637A (en) | Metal surface chromium-free passivation solution and preparation method thereof | |
| CN104073796A (en) | Metal plating passivation solution and preparation method thereof | |
| CN107164750A (en) | A kind of rare-earth salt passivation liquid and preparation method thereof | |
| CN109487256A (en) | A kind of surface treating agent before the electrophoretic painting for galvanized sheet | |
| CN105316672A (en) | Chromium-containing passivation liquid used for surface treatment of galvanized plate and use method thereof | |
| CN104451636A (en) | Chromium-free passivation solution for tin-plated steel plate and preparation method of chromium-free passivation solution | |
| CN106435547B (en) | A kind of environment-protective process replacing chromic acid passivation | |
| CN108531899A (en) | High corrosion-resistant admiro surface trivalent chromium deactivating liquid and preparation method thereof | |
| CN109112521A (en) | A kind of chrome-free tanning agent and preparation method thereof | |
| CN106929842A (en) | A kind of chromium-free passivation liquid and preparation method thereof | |
| CN104962896A (en) | Zinc-system phosphating solution additive and use method thereof | |
| CN107326354A (en) | A kind of silane finish and preparation method thereof | |
| CN104099595A (en) | Surface treating agent for wipe resistant aluminum alloy | |
| CN108048823A (en) | A kind of method of metal parts mechanical zinc-plating | |
| CN102534602A (en) | Finishing agent for metal surface protection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170915 |
|
| WD01 | Invention patent application deemed withdrawn after publication |