CN104674206A - Study on environmental-friendly citric acid passivation solution formula - Google Patents
Study on environmental-friendly citric acid passivation solution formula Download PDFInfo
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- CN104674206A CN104674206A CN201310641412.9A CN201310641412A CN104674206A CN 104674206 A CN104674206 A CN 104674206A CN 201310641412 A CN201310641412 A CN 201310641412A CN 104674206 A CN104674206 A CN 104674206A
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- citric acid
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- hydrogen peroxide
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- passivation solution
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Abstract
The invention relates to a study on an environmental-friendly citric acid passivation solution formula. The environmental-friendly citric acid passivation solution is prepared from the following components in percentage by weight: 5-20 percent of citric acid, 15-25 percent of hydrogen peroxide, 5-30 percent of a stabilizer and 1-10 percent of a corrosion inhibitor. Discovered by contrast experiments, a stainless steel sample passivated by citric acid is obviously superior to a sample which is not treated and is passivated by the traditional method in term of corrosion resistance, and the feasibility of a citric acid and hydrogen peroxide passivation process is proved.
Description
Technical field
The present invention relates to the research of a kind of citric acid environmental friendliness preparation of passivation solution, belong to chemicals field.
Background of invention
Stainless steel is widely used due to excellent mechanical property, machining property and corrosion resistance nature, but, stainless steel not " definitely stainless ", when aggressiveness negatively charged ion exists, the local corrosion that stainless steel will be caused danger, financial loss, environmental pollution may be caused thus, even damage to person. research display stainless steel surface its erosion resistance after Passivation Treatment is improved by a relatively large margin.Traditional passivation for stainless steel, there is higher potential safety hazard in the strong oxidizers such as concentrated nitric acid, the vitriol oil, chromic acid, and operational condition requires harsh.Along with regulation is to nitrate quantitative limitation, the nitroxyl formula for passivation is replaced by citric acid-based formula just gradually.Citric acid is strong to the activity of the specific activity of iron to chromium, can effectively from stainless steel surface removal iron, and hydrogen peroxide has Strong oxdiative performance, make stainless steel form stable oxide film better, therefore adopt citric acid and hydrogen peroxide solution system to carry out Passivation Treatment to stainless steel and there is good development prospect.
Patent of the present invention relates to the research of a kind of citric acid environmental friendliness preparation of passivation solution, is made up of citric acid, hydrogen peroxide, stablizer and certain inhibiter.Found by contrast experiment, the stainless steel sample solidity to corrosion after citric acid passivation be obviously better than unprocessed and Traditional Method passivated sample, confirm the feasibility of passivation process of citric acid and hydrogen peroxide.
Summary of the invention
Patent of the present invention relates to the research of a kind of citric acid environmental friendliness preparation of passivation solution.
In order to achieve the above object, this invention takes following technical scheme:
The present invention relates to the research of a kind of citric acid environmental friendliness preparation of passivation solution, it is characterized in that:
Above-mentioned auxiliary agent is preferably from citric acid, hydrogen peroxide.
Aforementioned stable agent preferably from: one of lead sulfate tribasic, dibasic lead phosphite, dibasic lead stearate or combination.
Above-mentioned inhibiter preferably from: benzotriazole, water-soluble mercapto benzothiazole, tolyltriazole, one of or combination.
In system, the ratio of each component is: citric acid: hydrogen peroxide: stablizer: inhibiter is (5 ~ 20%): (15 ~ 25%): (5 ~ 30%): (1 ~ 10%).
Concrete operation method:
Above-mentioned substance is mixed in proportion, stirs a kind of citric acid environmental friendliness preparation of passivation solution that can obtain patent of the present invention and relate to.
Embodiment
Below in conjunction with embodiment, the present invention is described further, but is not limited only to this.
Embodiment 1:
Raw material and proportioning: citric acid: 7% hydrogen peroxide: 15% stablizer: 20% inhibiter 5%.
Concrete operation method: be mixed in proportion by above-mentioned substance, stirs a kind of citric acid environmental friendliness preparation of passivation solution that can obtain patent of the present invention and relate to.
Embodiment 2:
Raw material and proportioning: citric acid: 15% hydrogen peroxide: 20% stablizer: 10% inhibiter 8%.
Specific implementation method is with embodiment 1.
Embodiment 3:
Raw material and proportioning: citric acid: 13% hydrogen peroxide: 22% stablizer: 28% inhibiter is 8%.
Concrete preparation method is with embodiment 1.
Above-described embodiment is only and clearly the invention example is described, and the restriction not to the invention embodiment.For those of ordinary skill in the field, other multi-form change and variations can also be made on the basis of the above description.Here exhaustive without the need to also giving all embodiments.
Claims (4)
1. the present invention relates to the research of a kind of citric acid environmental friendliness preparation of passivation solution, it is characterized in that: auxiliary agent is preferably from citric acid, hydrogen peroxide.
2. the formulating of the citric acid environmental friendliness passivating solution related to as the claims 1, stablizer is preferably from one of lead sulfate tribasic, dibasic lead phosphite, dibasic lead stearate or combination.
3. the formulating of the citric acid environmental friendliness passivating solution related to as the claims 1, inhibiter preferably from: benzotriazole, water-soluble mercapto benzothiazole, tolyltriazole, one of or combination.
4. the formulating of the citric acid environmental friendliness passivating solution related to as the claims 1, in system, the ratio of each component is: citric acid: hydrogen peroxide: stablizer: inhibiter is (5 ~ 20%): (15 ~ 25%): (5 ~ 30%): (1 ~ 10%).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310641412.9A CN104674206A (en) | 2013-12-03 | 2013-12-03 | Study on environmental-friendly citric acid passivation solution formula |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310641412.9A CN104674206A (en) | 2013-12-03 | 2013-12-03 | Study on environmental-friendly citric acid passivation solution formula |
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| CN104674206A true CN104674206A (en) | 2015-06-03 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105256300A (en) * | 2015-11-19 | 2016-01-20 | 佛山市湾厦新材料科技有限公司 | Stainless steel tungstate passivator and application thereof |
| CN105316670A (en) * | 2015-11-24 | 2016-02-10 | 苏州盖德精细材料有限公司 | Environment friendly stainless steel passivation solution and preparation method thereof |
| WO2016201936A1 (en) * | 2015-06-19 | 2016-12-22 | 海安县申菱电器制造有限公司 | Surface passivation method for stainless steel product |
| CN106435547A (en) * | 2016-10-13 | 2017-02-22 | 王薇 | Substituted chromic acid passivation environmental protection process |
| CN111850576A (en) * | 2020-08-05 | 2020-10-30 | 江门市新会亿利增立金属制品有限公司 | Formula of pickling passivation solution for forming oxide film on surface of steel |
-
2013
- 2013-12-03 CN CN201310641412.9A patent/CN104674206A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016201936A1 (en) * | 2015-06-19 | 2016-12-22 | 海安县申菱电器制造有限公司 | Surface passivation method for stainless steel product |
| CN105256300A (en) * | 2015-11-19 | 2016-01-20 | 佛山市湾厦新材料科技有限公司 | Stainless steel tungstate passivator and application thereof |
| CN105256300B (en) * | 2015-11-19 | 2018-07-13 | 佛山市湾厦新材料科技有限公司 | A kind of stainless steel tungstates passivator and its application |
| CN105316670A (en) * | 2015-11-24 | 2016-02-10 | 苏州盖德精细材料有限公司 | Environment friendly stainless steel passivation solution and preparation method thereof |
| CN105316670B (en) * | 2015-11-24 | 2017-11-03 | 东莞市佳乾新材料科技有限公司 | A kind of environment-friendly type passivation for stainless steel liquid and preparation method thereof |
| CN106435547A (en) * | 2016-10-13 | 2017-02-22 | 王薇 | Substituted chromic acid passivation environmental protection process |
| CN106435547B (en) * | 2016-10-13 | 2019-02-19 | 王薇 | A kind of environment-protective process replacing chromic acid passivation |
| CN111850576A (en) * | 2020-08-05 | 2020-10-30 | 江门市新会亿利增立金属制品有限公司 | Formula of pickling passivation solution for forming oxide film on surface of steel |
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Application publication date: 20150603 |