CN110760851A - Stainless steel surface corrosion inhibitor, preparation method and application - Google Patents
Stainless steel surface corrosion inhibitor, preparation method and application Download PDFInfo
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- CN110760851A CN110760851A CN201911048284.0A CN201911048284A CN110760851A CN 110760851 A CN110760851 A CN 110760851A CN 201911048284 A CN201911048284 A CN 201911048284A CN 110760851 A CN110760851 A CN 110760851A
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- stainless steel
- corrosion inhibitor
- steel surface
- preparation
- corrosion
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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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/04—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in markedly acid liquids
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention provides a stainless steel surface corrosion inhibitor which is prepared from the following components in percentage by weight: 11-17.5% of N-allylthiourea, 9.0-13.9% of 2-thiouracil, 4.0-6.0% of glucose, 6.0-7.0% of urotropine, 9.0-12.0% of glutaric acid and the balance of water. The corrosion inhibitor for the stainless steel surface can prevent hydrogen embrittlement and over-corrosion of a substrate during activation, and also prevent black ash from being generated on the stainless steel surface.
Description
Technical Field
The invention belongs to the technical field of metal treatment, and particularly relates to a stainless steel surface corrosion inhibitor and a preparation method thereof.
Background
The surface of stainless steel is chemically treated (chemically corroded) to obtain a micro-rough structure on the surface of stainless steel, which changes the hydrophobicity into hydrophilicity to increase the binding force between paint, plastic or glue and the surface of stainless steel.
The surface chemical roughening process is used for improving the adhesion of the metal surface to the anticorrosion, shock-insulation and noise-reduction material. In the industry of vibration isolation and noise reduction, steel and stainless steel surfaces are adopted more frequently. For steel and stainless steel workpieces, when corrosion prevention, shock insulation and noise reduction treatment is carried out, if micro-roughening treatment can be carried out on the surfaces of the steel and stainless steel workpieces, the micro-roughened surfaces can obviously improve the real surface area of the metal surfaces, and further improve the adhesion performance of the surfaces of the steel and stainless steel to corrosion prevention layers and shock insulation and noise reduction materials. The stainless steel surface corrosion inhibitor of the invention is an indispensable process for better forming a roughened surface on the stainless steel surface by the roughening solution.
Disclosure of Invention
In order to overcome the defects in the prior art, one of the objectives of the present invention is to provide a corrosion inhibitor solution for stainless steel surface, which can prevent hydrogen embrittlement and over-corrosion of the substrate during activation after being treated with stainless steel, and prevent black ash from being generated on the stainless steel surface, which is not favorable for forming a viscous film in the roughening solution and affecting the roughening effect.
The second purpose of the invention is to provide a preparation method of the stainless steel surface corrosion inhibitor.
The invention also aims to provide the application of the stainless steel surface corrosion inhibitor in the pretreatment of stainless steel surface roughening.
The stainless steel surface corrosion inhibitor is prepared from the following components in percentage by weight:
preferably, the stainless steel surface corrosion inhibitor is prepared from the following components in percentage by weight:
the urotropine has the effects of being low in consumption, poor in corrosion inhibition effect, excessive in consumption and strong in corrosion inhibition effect, and influences the subsequent process.
The stainless steel surface corrosion inhibitor firstly enables 2-thiouracil, N-allylthiourea, glucose and urotropine to be adsorbed close to the metal surface through physical adsorption, then lone pair electrons on nitrogen atoms and a d orbit of metal form a coordination bond, molecules of the corrosion inhibitor are firmly adsorbed on the metal surface through the coordination bond, and the action process is as follows:
after stainless steel passes through the corrosion inhibition tank, hydrogen embrittlement and over-corrosion of a substrate during activation can be prevented, and black ash on the surface of the stainless steel is prevented, so that the formation of a viscous film in the roughening solution is not facilitated, and the roughening effect is influenced.
The preparation method of the stainless steel surface corrosion inhibitor comprises the following steps:
weighing the components, blending, stirring and dissolving uniformly.
The corrosion inhibitor for the stainless steel surface of the invention adopts the following treatment method to carry out corrosion inhibition treatment on the stainless steel: soaking stainless steel for 2-10 min for corrosion inhibition treatment under the conditions that the bath solution temperature is 50-60 ℃, the stock solution is put into the bath and the pH value is less than 0.5; cleaning the stainless steel after corrosion inhibition treatment, wherein the cleaning mode comprises soaking water washing or spraying water washing; and (4) baking the cleaned stainless steel at high temperature or drying the stainless steel by hot air.
Detailed Description
The present invention is further illustrated by the following examples, which are not intended to be limiting.
Table 1 shows the formulations of examples 1 to 5 and comparative examples 1 to 2 in wt%.
Table 1 formulations of examples 1-5 and comparative examples 1-2.
The preparation method of the stainless steel surface corrosion inhibitor in the above examples and comparative examples is as follows:
the components are weighed, blended, stirred and dissolved uniformly.
The corrosion inhibitors for the stainless steel surfaces of the above examples and comparative examples adopt the following treatment methods to perform corrosion inhibition treatment on stainless steel: soaking stainless steel for 5min for corrosion inhibition treatment under the conditions that the bath solution temperature is 50-60 ℃, the stock solution is put into the bath and the pH value is less than 0.5; and (4) spraying, washing and cleaning the stainless steel after corrosion inhibition treatment, and drying the cleaned stainless steel by hot air.
The use effects of the above examples and comparative examples are as follows:
TABLE 2
The hydrogen embrittlement in table 2 was tested by the delayed failure test.
Claims (4)
1. The stainless steel surface corrosion inhibitor is characterized by comprising the following components in percentage by weight:
2. the stainless steel surface corrosion inhibitor of claim 1, wherein the corrosion inhibitor is prepared from the following components:
3. the preparation method of the stainless steel surface corrosion inhibitor according to claim 1, wherein the components are weighed, blended, stirred and dissolved uniformly.
4. The use of the corrosion inhibitor for stainless steel surface according to claim 1 in pretreatment of stainless steel surface roughening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911048284.0A CN110760851A (en) | 2019-10-30 | 2019-10-30 | Stainless steel surface corrosion inhibitor, preparation method and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911048284.0A CN110760851A (en) | 2019-10-30 | 2019-10-30 | Stainless steel surface corrosion inhibitor, preparation method and application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110760851A true CN110760851A (en) | 2020-02-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911048284.0A Pending CN110760851A (en) | 2019-10-30 | 2019-10-30 | Stainless steel surface corrosion inhibitor, preparation method and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110760851A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2049469C1 (en) * | 1992-09-16 | 1995-12-10 | Харьковский Медицинский Институт | Radiological protection agent |
| CN105714302A (en) * | 2016-03-08 | 2016-06-29 | 湖南金裕环保科技有限公司 | Multifunctional antirust corrosion-inhibiting agent |
| CN105755480A (en) * | 2016-05-17 | 2016-07-13 | 江苏筑磊电子科技有限公司 | Efficient acidic cleaner |
| CN106119946A (en) * | 2016-06-24 | 2016-11-16 | 惠州市博美环保新材料有限公司 | A kind of aluminium alloy release agent for electrolytic |
-
2019
- 2019-10-30 CN CN201911048284.0A patent/CN110760851A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2049469C1 (en) * | 1992-09-16 | 1995-12-10 | Харьковский Медицинский Институт | Radiological protection agent |
| CN105714302A (en) * | 2016-03-08 | 2016-06-29 | 湖南金裕环保科技有限公司 | Multifunctional antirust corrosion-inhibiting agent |
| CN105755480A (en) * | 2016-05-17 | 2016-07-13 | 江苏筑磊电子科技有限公司 | Efficient acidic cleaner |
| CN106119946A (en) * | 2016-06-24 | 2016-11-16 | 惠州市博美环保新材料有限公司 | A kind of aluminium alloy release agent for electrolytic |
Non-Patent Citations (3)
| Title |
|---|
| 樊富友等: "《制导炸弹结构防腐蚀与表面防护技术》", 30 April 2018, 西北工业大学出版社 * |
| 程春茂等: "乌洛托品对超纯铁素体不锈钢酸洗的缓蚀效果", 《腐蚀与防护》 * |
| 薛守庆等: "《缓蚀剂的应用》", 30 June 2019, 哈尔滨工程大学出版社 * |
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| PB01 | Publication | ||
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Application publication date: 20200207 |