WO2001071061A1 - Agent anticorrosion pour acier inoxydable et procede de traitement anticorrosion de l'acier inoxydable - Google Patents
Agent anticorrosion pour acier inoxydable et procede de traitement anticorrosion de l'acier inoxydable Download PDFInfo
- Publication number
- WO2001071061A1 WO2001071061A1 PCT/JP2001/002319 JP0102319W WO0171061A1 WO 2001071061 A1 WO2001071061 A1 WO 2001071061A1 JP 0102319 W JP0102319 W JP 0102319W WO 0171061 A1 WO0171061 A1 WO 0171061A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- stainless steel
- treatment
- anticorrosion
- weight
- hydroxylamine
- Prior art date
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
- 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
-
- 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
- C23C22/50—Treatment of iron 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
- 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
- C23C22/73—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 characterised by the process
Definitions
- the present invention relates to an anticorrosion treatment agent for a stainless steel surface, and a method for anticorrosion treatment using the same, and more particularly to an anticorrosion treatment agent and an anticorrosion treatment which can be advantageously used to enhance the corrosion resistance of a stainless steel surface in a severe environment.
- an anticorrosion treatment agent and an anticorrosion treatment which can be advantageously used to enhance the corrosion resistance of a stainless steel surface in a severe environment.
- stainless steel containing a large amount of chromium has excellent corrosion resistance.However, even with such stainless steel, under strong acid or strong alkaline environment conditions, or even weak acid or weak alkali Nevertheless, under such conditions where they are exposed for a long time, the surface is gradually corroded. Such corrosion of the stainless steel material causes damage to the material, and when the stainless steel material is a reaction vessel or a storage vessel for performing a chemical reaction, the product generated by the corrosion causes impurities to be generated. May contaminate substances in containers.
- Heat Dorokishiruamin salt ( ⁇ ⁇ 2 ⁇ ⁇ ⁇ ⁇ ⁇ , ⁇ is, H 2 S 0 4, H 3 P_ ⁇ 4, acids such as HC 1), for example a bisulfite sodium nitrite sodium in aqueous solution It can be produced by reacting to give an aqueous solution of sodium hydroxylyamine disulfonic acid and then hydrolyzing it, and it is a stable compound both in solid and in aqueous solution.
- hydroxylamine salts have generally been used as raw materials for chemical reactions themselves, but they are also useful for processing and cleaning of chemicals and electronic materials, but are very chemically unstable. It has also been used to prepare free hydroxyylamine as needed.
- a phosphate treatment which comprises treating a metal surface with an acidic phosphate aqueous solution.
- an acidic phosphate aqueous solution See, for example, U.S. Pat. Nos. 4,149,099, 4,865,563 and 5,957,655; European Patents 0,695,817 A1 and No. 0 315 059 A1; and International Patent Application Nos. WO 93/0 3198 and WO 93/2250 9 include metals such as iron and zinc.
- a method of preventing corrosion by forming a phosphate film on the surface by immersing the film in an aqueous solution of zinc phosphate and iron phosphate is disclosed. At that time, it is described that at most several weight% of a hydroxylamine salt such as hydroxylamine sulfate is added to a phosphate aqueous solution in order to promote the formation of a phosphate film.
- An object of the present invention is to provide an anticorrosion treatment agent useful for improving the corrosion resistance of stainless steel in a severe environment and a method for anticorrosion treatment using the same. Disclosure of the invention
- the present inventors have conducted research on anticorrosion treatment agents and anticorrosion treatment methods that do not cause corrosion of stainless steel even when exposed to harsh environments such as acids and aluminum alloys for a long time. It has been found that when a stainless steel surface is heated with an aqueous solution of a hydroxylamine salt in contact with the aqueous solution, a stainless steel surface with extremely excellent corrosion resistance can be obtained. It is.
- the present invention relates to an anticorrosion treating agent for a stainless steel surface comprising a hydroxylamine salt.
- the present invention also relates to a method for anticorrosion treatment comprising heating a stainless steel surface at a temperature of 50 ° C. or more in a state in which the surface is in contact with the above-mentioned antioxidant for hydroxylamine salt.
- the hydroxylamine salt anticorrosion treating agent for stainless steel surface of the present invention preferably has the following form.
- the hydroxylamine salt is hydroxylamine sulfate or hydroxylamine phosphate.
- An anticorrosion agent for a hydroxylamine salt comprising an aqueous solution containing a hydroxylamine salt in the range of 0.2 to 50% by weight.
- the anticorrosion agent for hydroxylamine salt of the present invention generally comprises an aqueous solution of hydroxylamine salt, and its concentration is in the range of 0.2 to 50% by weight. Preferably, the concentration is in the range from 5 to 20% by weight.
- the hydroxylamine salt include hydroxylamine sulfate, hydroxylamine phosphate and hydroxylamine hydrochloride. Particularly preferred are hydroxylamine sulfate and hydroxylamine phosphate. These hydroxyylamine salts can be produced by a known method as described above.
- the corrosion prevention treatment of stainless steel using the aqueous solution of hydroxylamine salt of the present invention is generally performed by immersing the stainless steel in the aqueous solution of hydroxylamine salt and then heating it at a temperature of 50 ° C or more under normal pressure.
- the treatment time varies depending on the concentration of the aqueous solution of hydroxylamine salt and the treatment temperature, it is generally at least 3 minutes or more, preferably 1 to 20 hours.
- heating may be performed at a temperature higher than the boiling point of about 100 ° C, and the treatment temperature is generally in a range of 60 ° C to 160 ° C.
- the stainless steel to which the anticorrosion treatment method of the present invention can be applied generally has any composition, but is preferably a stainless steel containing a large amount of nickel-chromium.
- the anticorrosion treatment according to the present invention corrosion of stainless steel in a harsh environment can be suppressed, and contamination and contamination of impurities due to generation of corrosion products can be effectively prevented.
- stainless steel may be used to distill a free (i.e., not salted) aqueous solution of hydroxylamine, which is useful as a detergent for pharmaceuticals and electronic materials, in order to obtain a pure product. In advance to the distillation equipment By performing the anticorrosion treatment as described above, corrosion due to highly corrosive hydroxylamine can be effectively prevented, and contamination or contamination of impurities from the apparatus can be prevented.
- test piece was subjected to anticorrosion treatment in the same manner as in Example 1 except that a 20% by weight aqueous solution of hydroxylamine sulfate was used instead of the aqueous solution of hydroxylamine phosphate. Processing time was 8, 24 or 72 hours.
- a 20% by weight aqueous solution of hydroxylamine sulfate was placed in an autoclave, a test piece (3) similar to that in Example 1 was added thereto, and the mixture was heated in an oil bath and heated at a temperature of 160 ° C. The test piece was subjected to anticorrosion treatment by heating for hours.
- Example 2 A 5% by weight aqueous solution of hydroxylamine sulfate was added to the autocrepe, and the same test specimen (1) or (3) as in Example 1 was added thereto. The mixture was heated in an oil bath at 160 ° C. The specimen was heated at the temperature for 8 hours to perform anticorrosion treatment.
- the anticorrosion treating agent comprising a hydroxyylamine salt of the present invention is useful for significantly improving the corrosion resistance of stainless steel, particularly chromium-containing stainless steel.
- the anticorrosion treatment method of the present invention even when stainless steel is exposed to a harsh environment such as acid or aluminum alloy for a long time, it does not corrode, and thus the surface of the stainless steel material is not corroded. Contamination and contamination due to the impurities can be effectively prevented.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Chemical Treatment Of Metals (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01915719A EP1266981A4 (en) | 2000-03-24 | 2001-03-23 | ANTI-CORROSION AGENT FOR STAINLESS STEEL AND PROCESS FOR THE TREATMENT OF ANTI-CORROSIVE STAINLESS STEEL |
AU42764/01A AU4276401A (en) | 2000-03-24 | 2001-03-23 | Anticorrosive agent for stainless steel and method of anticorrosive treatment ofstainless steel |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000-083529 | 2000-03-24 | ||
JP2000083529A JP2001271184A (ja) | 2000-03-24 | 2000-03-24 | ステンレス鋼の防食処理剤および防食処理方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001071061A1 true WO2001071061A1 (fr) | 2001-09-27 |
Family
ID=18600147
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2001/002319 WO2001071061A1 (fr) | 2000-03-24 | 2001-03-23 | Agent anticorrosion pour acier inoxydable et procede de traitement anticorrosion de l'acier inoxydable |
Country Status (7)
Country | Link |
---|---|
US (1) | US20010032658A1 (ja) |
EP (1) | EP1266981A4 (ja) |
JP (1) | JP2001271184A (ja) |
KR (1) | KR20030007476A (ja) |
CN (1) | CN1429281A (ja) |
AU (1) | AU4276401A (ja) |
WO (1) | WO2001071061A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103966591B (zh) * | 2013-01-30 | 2017-03-29 | 中国科学院金属研究所 | 一种提高奥氏体不锈钢抗点蚀性能的化学处理方法 |
CN105694538A (zh) * | 2016-01-05 | 2016-06-22 | 萧县金鹭纺织品有限公司 | 一种低吸油量防腐蚀氧化铁红颜料的制备方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5355427A (en) * | 1976-10-30 | 1978-05-19 | Furukawa Electric Co Ltd | Antioxidation method for metals |
US4350606A (en) * | 1980-10-03 | 1982-09-21 | Dearborn Chemical Company | Composition and method for inhibiting corrosion |
US4865653A (en) * | 1987-10-30 | 1989-09-12 | Henkel Corporation | Zinc phosphate coating process |
WO1996032522A1 (de) * | 1995-04-13 | 1996-10-17 | Holderchem Holding Ag | Korrosionsinhibierung und verbesserung der verbundeigenschaften von armierungsmetallen |
-
2000
- 2000-03-24 JP JP2000083529A patent/JP2001271184A/ja not_active Withdrawn
-
2001
- 2001-03-23 WO PCT/JP2001/002319 patent/WO2001071061A1/ja not_active Application Discontinuation
- 2001-03-23 CN CN01809442A patent/CN1429281A/zh active Pending
- 2001-03-23 KR KR1020027012610A patent/KR20030007476A/ko not_active Application Discontinuation
- 2001-03-23 EP EP01915719A patent/EP1266981A4/en not_active Withdrawn
- 2001-03-23 AU AU42764/01A patent/AU4276401A/en not_active Abandoned
- 2001-03-26 US US09/816,386 patent/US20010032658A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5355427A (en) * | 1976-10-30 | 1978-05-19 | Furukawa Electric Co Ltd | Antioxidation method for metals |
US4350606A (en) * | 1980-10-03 | 1982-09-21 | Dearborn Chemical Company | Composition and method for inhibiting corrosion |
US4865653A (en) * | 1987-10-30 | 1989-09-12 | Henkel Corporation | Zinc phosphate coating process |
WO1996032522A1 (de) * | 1995-04-13 | 1996-10-17 | Holderchem Holding Ag | Korrosionsinhibierung und verbesserung der verbundeigenschaften von armierungsmetallen |
Also Published As
Publication number | Publication date |
---|---|
KR20030007476A (ko) | 2003-01-23 |
AU4276401A (en) | 2001-10-03 |
EP1266981A4 (en) | 2006-12-27 |
JP2001271184A (ja) | 2001-10-02 |
CN1429281A (zh) | 2003-07-09 |
US20010032658A1 (en) | 2001-10-25 |
EP1266981A1 (en) | 2002-12-18 |
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