KR20030007476A - Anticorrosive agent for stainless steel and method of anticorrosive treatment of stainless steel - Google Patents
Anticorrosive agent for stainless steel and method of anticorrosive treatment of stainless steel Download PDFInfo
- Publication number
- KR20030007476A KR20030007476A KR1020027012610A KR20027012610A KR20030007476A KR 20030007476 A KR20030007476 A KR 20030007476A KR 1020027012610 A KR1020027012610 A KR 1020027012610A KR 20027012610 A KR20027012610 A KR 20027012610A KR 20030007476 A KR20030007476 A KR 20030007476A
- Authority
- KR
- South Korea
- Prior art keywords
- stainless steel
- corrosion
- hydroxylamine
- treatment
- weight
- 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
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)
Abstract
본 발명은 히드록실아민 염을 함유하는 스테인리스 스틸 표면용 부식방지제; 및 히드록실아민 염의 수용액과 스테인리스 스틸 표면을 접촉시키고, 이를 가열하는 것을 포함하는 스테인리스 스틸 표면의 부식방지 처리 방법에 관한 것이다. 상기 방법을 사용하여 격한 조건 하에서 스테인리스 스틸의 내부식성을 현저하게 향상시킬 수 있다.The present invention is a corrosion inhibitor for stainless steel surface containing a hydroxylamine salt; And a method for preventing corrosion of a stainless steel surface comprising contacting an aqueous solution of a hydroxylamine salt with a stainless steel surface and heating it. The method can be used to significantly improve the corrosion resistance of stainless steel under severe conditions.
Description
본 발명은 스테인리스 스틸 물품 표면용 부식방지제 및 이를 사용하는 부식방지 처리 방법에 관한 것이다. 특히 본 발명은, 격한 조건 하에서 효과적으로 활용할 수 있는 스테인리스 스틸 물품 표면용 부식방지제 및 이를 사용하는 부식방지 처리 방법에 관한 것이다.The present invention relates to anti-corrosion agents for stainless steel article surfaces and anti-corrosion treatment methods using the same. In particular, the present invention relates to corrosion inhibitors for stainless steel article surfaces that can be effectively utilized under severe conditions, and to methods of preventing corrosion using the same.
금속 물품의 표면이 내부식성 코팅을 갖거나, 표면을 무기 또는 유기 부식 저해제로 처리하여 내부식성이 증가되도록 할 수 있다는 것이 공지되어 있다.It is known that the surface of metal articles may have a corrosion resistant coating, or the surface may be treated with an inorganic or organic corrosion inhibitor to increase corrosion resistance.
금속 중, 크롬을 함유하는 스테인리스 스틸이 부식에 대해 높은 저항성을 보인다는 것이 공지되어 있다. 그러나, 그러한 스테인리스 스틸이라도 강한 산성 또는 염기성 조건 하에 유지되거나, 장시간 동안 약한 산성 또는 염기성 조건 하에 위치하는 경우, 점차적으로 표면이 부식된다. 또한, 스테인리스 스틸이 반응 용기 (화학 반응을 수행하는데 사용됨) 또는 저장 용기를 만들기 위한 물질로서 사용되면, 부식 생성물은 불순물로서 용기 내의 물질로 이동하게 된다.Among metals, it is known that stainless steel containing chromium exhibits high resistance to corrosion. However, even such stainless steels are gradually corroded when they are kept under strong acidic or basic conditions or when placed under weak acidic or basic conditions for a long time. In addition, when stainless steel is used as a material for making a reaction vessel (used to carry out a chemical reaction) or a storage vessel, the corrosion products will migrate to the material in the vessel as impurities.
히드록실아민 염 (NH2OH·A, 식 중 A는 H2SO4, H3PO4또는 HCl과 같은 산임)은, 예를 들면, 수용액 중에서 소듐 수소설파이트와 소듐 나이트레이트를 반응시켜, 소듐 히드록실아민 디설포네이트 수용액을 수득하고, 소듐 히드록실아민 디설포네이트를 가수분해함으로써 제조할 수 있다. 히드록실아민 염은 고체 형태 또는 수용액으로 안정하다. 히드록실아민 염 그 자체는 일반적으로, 화학 반응에서 출발물질로서 사용된다. 이는 또한 화합물로서 중요한 화학적으로 매우 불안정한 유리 히드록실아민을 남기거나 제조하기 위해, 또는, 요구되는 경우, 전자 재료를 가공 또는 세척하는데 사용된다.The hydroxylamine salt (NH 2 OH.A, wherein A is an acid such as H 2 SO 4 , H 3 PO 4 or HCl) is, for example, by reacting sodium hydrogensulfite with sodium nitrate in an aqueous solution, It can be prepared by obtaining an aqueous sodium hydroxylamine disulfonate solution and hydrolyzing the sodium hydroxylamine disulfonate. The hydroxylamine salts are stable in solid form or in aqueous solution. The hydroxylamine salt itself is generally used as starting material in chemical reactions. It is also used to leave or prepare free hydroxylamines, which are important chemically unstable compounds, or to process or clean electronic materials, if desired.
철 등의 부식방지 처리로서, 금속 표면을 산성 포스페이트 수용액으로 처리하여 수행하는 포스페이트 처리가 공지되어 있다. 예를 들면 미국 특허 제 4,149,909 호, 제 4,865,653 호 및 제 5,597,465 호; 공개 EP 출원 제 0 695 817 A1 호 및 제 0 315 059 A1 호; WO 93/03198; WO 93/20259 는 철 또는 아연과 같은 금속을 각각 철 포스페이트 수용액 또는 아연 포스페이트 수용액과 접촉하도록 하고, 금속 표면에 포스페이트 코트(coat)를 형성함으로써, 금속이 향상된 내부식성을 가지도록 할 수 있고, 수 중량%의 히드록실아민 염, 예컨대 히드록실아민 설페이트를 포스페이트 수용액에 첨가함으로써 포스페이트 코트의 형성이 증진된다는 것을 보여준다.As anticorrosion treatments such as iron, phosphate treatments are known which are carried out by treating a metal surface with an acidic phosphate aqueous solution. See, for example, US Pat. Nos. 4,149,909, 4,865,653 and 5,597,465; Published EP applications 0 695 817 A1 and 0 315 059 A1; WO 93/03198; WO 93/20259 allows a metal such as iron or zinc to be contacted with an aqueous solution of iron phosphate or an aqueous solution of zinc phosphate, respectively, and by forming a phosphate coat on the surface of the metal, thereby allowing the metal to have improved corrosion resistance. It is shown that the formation of a phosphate coat is enhanced by adding a weight percent hydroxylamine salt such as hydroxylamine sulfate to the phosphate aqueous solution.
본 발명은, 격한 조건 하에서 스테인리스 스틸의 내부식성을 강화하는데 효과적인 부식방지제 및 부식방지 처리 방법을 제공한다.The present invention provides a preservative and an anticorrosion treatment method effective to enhance the corrosion resistance of stainless steel under severe conditions.
[발명의 개시][Initiation of invention]
본 발명자들은 장기간의 강한 산성 또는 염기성 조건 하에서 스테인리스 스틸의 부식을 유발하지 않는 부식방지제 및 부식방지 처리 방법을 발견하기 위해 연구하였다. 그 결과, 스테인리스 스틸의 표면을 히드록실아민 수용액에서 가열할 때, 그 표면이 내부식성이 큰 표면으로 전환되는 것을 발견하였다. 본 발명은 상기 발견에 기초하여 이루어졌다.The inventors have studied to find preservatives and anticorrosion treatment methods that do not cause corrosion of stainless steel under long term strong acidic or basic conditions. As a result, when heating the surface of stainless steel in the hydroxylamine aqueous solution, it discovered that the surface was converted into the surface with high corrosion resistance. The present invention has been made based on the above findings.
본 발명은 히드록실아민 염을 함유하는 스테인리스 스틸 표면용 부식방지제에 있다.The present invention is directed to corrosion inhibitors for stainless steel surfaces containing hydroxylamine salts.
본 발명은 또한, 스테인리스 스틸 표면을 상기 언급한 히드록실아민 염 부식방지제와 접촉시킨 상태로, 50℃ 이상의 온도로 가열하는 것을 포함하는 부식방지 처리 방법에 있다.The present invention also relates to a method for preventing corrosion comprising heating the stainless steel surface to a temperature of 50 ° C. or higher in contact with the aforementioned hydroxylamine salt inhibitor.
본 발명에 따른 스테인리스 스틸 표면용 히드록실아민 염 부식방지제의 바람직한 구현예를 하기에 기술하였다.Preferred embodiments of the hydroxylamine salt preservatives for stainless steel surfaces according to the invention are described below.
(1)히드록실아민 염은 히드록실아민 설페이트 또는 히드록실아민 포스페이트임.(1) The hydroxylamine salt is hydroxylamine sulfate or hydroxylamine phosphate.
(2)0.2 내지 50 중량%의 히드록실아민 염을 함유하는 부식방지제.(2) A corrosion inhibitor containing from 0.2 to 50% by weight of hydroxylamine salt.
[발명 수행의 바람직한 구현예]Preferred Embodiments of the Invention
본 발명의 히드록실아민 염 부식방지제는 대체로 수용액의 형태이다. 농도는 0.2 내지 50 중량% 범위, 바람직하게는 5 내지 20 중량% 범위이다. 히드록실아민 염의 예에는 히드록실아민 설페이트, 히드록실아민 포스페이트 및 히드록실아민 히드로클로라이드가 포함된다. 특히 바람직한 것은 히드록실아민 설페이트 및 히드록실아민 포스페이트이다. 이러한 히드록실아민 염은 상기에 기술된 바와 같이,공지된 방법으로 제조할 수 있다.The hydroxylamine salt preservatives of the present invention are generally in the form of aqueous solutions. The concentration is in the range from 0.2 to 50% by weight, preferably in the range from 5 to 20% by weight. Examples of hydroxylamine salts include hydroxylamine sulfate, hydroxylamine phosphate and hydroxylamine hydrochloride. Especially preferred are hydroxylamine sulphate and hydroxylamine phosphate. Such hydroxylamine salts can be prepared by known methods, as described above.
방법에서, 스테인리스 스틸 물품은 이 물품을 가열된 히드록실아민 염 수용액과 접촉하도록 유지함으로써 부식을 방지할 수 있다. 히드록실아민 염 수용액은 바람직하게는 50℃ 이상의 온도로 가열된다. 오토클레이브와 같은 내압력 반응 용기에서 스테인리스 스틸 물품이 가열된 히드록실아민 염 용액과 접촉하도록 유지되면, 온도는 100℃ 이상이 될 수 있다. 일반적으로 온도는 60 내지 160℃의 범위로 유지된다. 스테인리스 스틸 물품은 가열된 히드록실아민 염 용액과 바람직하게는 3분 이상, 보다 바람직하게는 1 내지 20 시간 동안 접촉하도록 유지한다.In the method, a stainless steel article can prevent corrosion by keeping the article in contact with a heated aqueous solution of hydroxylamine salt. The aqueous hydroxylamine salt solution is preferably heated to a temperature of at least 50 ° C. If the stainless steel article is kept in contact with the heated hydroxylamine salt solution in a pressure resistant reaction vessel such as an autoclave, the temperature may be at least 100 ° C. Generally the temperature is maintained in the range of 60 to 160 ° C. The stainless steel article is kept in contact with the heated hydroxylamine salt solution for at least 3 minutes, more preferably 1 to 20 hours.
본 발명의 방법으로 처리하는 것이 가능한 스테인리스 스틸에는 제한이 없다. 그러나, 본 발명의 방법은, 크롬 원소 및 니켈 원소를 함유하는 스테인리스 스틸의 부식방지 처리에 적용하는 것이 바람직하다.There is no restriction on the stainless steel which can be treated by the method of the present invention. However, it is preferable to apply the method of this invention to the corrosion prevention treatment of stainless steel containing a chromium element and a nickel element.
본 발명의 부식방지 처리는 격한 조건 하에서 스테인리스 스틸의 부식을 효과적으로 방지할 수 있고, 불순물인 부식 생성물의 이동을 예방할 수 있다. 예를 들면, 스테인리스 스틸로 만들어진 증류 장치 (약학적으로 활성이 있는 화합물의 제조에, 또는 전자 부품을 세척하기 위한 세제로서 가치가 있는, 향상된 순도의 히드록실아민 수용액을 수득하기 위해 사용)를 상기 언급한 부식방지 처리법으로 미리 처리하면, 부식성이 큰 히드록실아민에 의한 장치의 부식을 효과적으로 예방하고, 장치로부터의 불순물의 이동을 효과적으로 피하게 된다.The anti-corrosion treatment of the present invention can effectively prevent corrosion of stainless steel under severe conditions, and can prevent migration of corrosion products that are impurities. For example, a distillation apparatus made of stainless steel (used to obtain an aqueous solution of hydroxylamine of improved purity, which is valuable in the preparation of pharmaceutically active compounds or as a detergent for cleaning electronic components) is mentioned above. Pretreatment with the aforementioned anti-corrosion treatment effectively prevents corrosion of the device by highly corrosive hydroxylamine and effectively avoids migration of impurities from the device.
[실시예 1]Example 1
환류 콘덴서가 장착된 유리 플라스크에, 히드록실아민 포스페이트 수용액 (농도: 20 중량%)을 넣었다. 하기에 나타낸 합금 조성을 갖는 스테인리스 스틸의 견본을 히드록실아민 포스페이트 수용액에 넣었다.Into a glass flask equipped with a reflux condenser, an aqueous hydroxylamine phosphate solution (concentration: 20% by weight) was added. A sample of stainless steel having the alloy composition shown below was placed in an aqueous hydroxylamine phosphate solution.
그 후, 플라스크를 약 100℃로 가열한 오일 배스에서 8시간 또는 24 시간 동안 유지하여 부식방지 처리를 수행하였다.The flask was then held in an oil bath heated to about 100 ° C. for 8 hours or 24 hours to effect corrosion protection.
(1)SUS 304L 스테인리스 스틸 (조성: Fe 약 73%, Ni 약 9%, Cr 약 18%)(1) SUS 304L stainless steel (composition: about 73% Fe, about 9% Ni, about 18% Cr)
(2)SUS 316L 스테인리스 스틸 (조성: Fe 약 70%, Ni 약 12%, Cr 약 16%, Mo 약 2%)(2) SUS 316L stainless steel (composition: about 70% Fe, about 12% Ni, about 16% Cr, about 2% Mo)
(3)SUS 310S 스테인리스 스틸 (조성: Fe 약 57%, Ni 약 19%, Cr 약 24%)(3) SUS 310S stainless steel (composition: about 57% Fe, about 19% Ni, about 24% Cr)
이와 같이 처리한 견본을 계량하고, 내열 유리병 내의 10 중량% 황산 수용액에 넣었다. 유리병을 80℃로 가열한 자동온도조절기에 넣고 일정 시간 유지하였다. 그 후, 유리병을 자동온도조절기에서 꺼냈다. 견본을 황산 수용액으로부터 회수하고, 물로 세척하고, 건조하고, 계량하였다. 스테인리스 스틸 견본의 부식으로 초래된 중량 감소를 측정하기 위해 2가지 중량값을 비교하였다.The specimens thus treated were weighed and placed in a 10% by weight aqueous sulfuric acid solution in a heat resistant glass bottle. The glass bottle was placed in a thermostat heated to 80 ° C. and maintained for a certain time. Thereafter, the vial was taken out of the thermostat. Samples were recovered from aqueous sulfuric acid solution, washed with water, dried and weighed. Two weight values were compared to determine the weight loss caused by corrosion of the stainless steel specimen.
비교를 위해, 부식 저해 처리를 하지 않은 평가 스테인리스 스틸 견본으로 상기에 언급한 시험을 시행하여 황산 용액에서의 저항성을 평가하였다.For comparison, the above-mentioned test was conducted with an evaluation stainless steel specimen that was not subjected to corrosion inhibition treatment to evaluate the resistance in sulfuric acid solution.
결과를 표 1 내지 3에 나타내었다.The results are shown in Tables 1-3.
[실시예 2]Example 2
히드록실아민 포스페이트 수용액을 히드록실아민 설페이트 수용액 (농도: 20 중량%)으로 대체하는 것을 제외하고는 실시예 1의 공정을 반복했다.The process of Example 1 was repeated except that the aqueous solution of hydroxylamine phosphate was replaced with an aqueous solution of hydroxylamine sulfate (concentration: 20% by weight).
부식방지강화 처리시에, 8시간, 24시간, 또는 72시간 동안 상기 처리를 추가적으로 수행했다.In the anticorrosion strengthening treatment, the treatment was further carried out for 8 hours, 24 hours or 72 hours.
부식방지 처리된 시료를 실시예 1과 동일한 방법으로 내부식성을 조사하였다. 결과를 표 4 내지 6에 나타내었다.Corrosion-resistant samples were examined for corrosion resistance in the same manner as in Example 1. The results are shown in Tables 4-6.
[실시예 3]Example 3
오토클레이브에 히드록실아민 설페이트 수용액 (농도: 20 중량%)을 넣었다. 실시예 1에 기재된 스테인리스 스틸 (3)의 시료를 상기 오토클레이브에 넣었다.An aqueous hydroxylamine sulfate solution (concentration: 20% by weight) was placed in an autoclave. A sample of stainless steel (3) described in Example 1 was placed in the autoclave.
이어서, 시료의 부식방지 처리를 수행하기 위해, 오토클레이브를 대략 160℃로 가열한 오일 배스에 3 시간 동안 위치시켰다.The autoclave was then placed in an oil bath heated to approximately 160 ° C. for 3 hours to perform anticorrosion treatment of the sample.
이어서 시료를 실시예 1에 기재된 방식으로 황산 수용액에 위치시켜, 그렇게 처리된 시료의 내부식성을 조사하였다. 결과를 표 7에 나타내었다.The sample was then placed in an aqueous sulfuric acid solution in the manner described in Example 1 to investigate the corrosion resistance of the sample so treated. The results are shown in Table 7.
[실시예 4]Example 4
오토클레이브에 히드록실아민 설페이트 수용액 (농도: 5 중량%)을 넣었다. 실시예 1에 기재된 스테인리스 스틸 (1) 또는 (3)의 시료를 상기 오토클레이브에 넣었다.An aqueous hydroxylamine sulfate solution (concentration: 5% by weight) was placed in an autoclave. A sample of stainless steel (1) or (3) described in Example 1 was placed in the autoclave.
이어서 시료의 부식방지 처리를 수행하기 위해, 오토클레이브를 대략 160℃로 가열한 오일 배스에 8 시간 동안 위치시켰다.The autoclave was then placed in an oil bath heated to approximately 160 ° C. for 8 hours to perform anticorrosion treatment of the sample.
이어서 시료를 실시예 1에 기재된 방식으로 황산 수용액에 위치시켜, 그렇게 처리된 시료의 내부식성을 조사하였다. 결과를 표 8 내지 9에 나타내었다.The sample was then placed in an aqueous sulfuric acid solution in the manner described in Example 1 to investigate the corrosion resistance of the sample so treated. The results are shown in Tables 8-9.
표 1 내지 9에 보여준 결과로부터 명백한 바와 같이, 본 발명에 따른 히드로실아민 염 수용액으로 처리된 스테인리스 스틸 시료는 가열한 황산 수용액 중에 수십 시간 또는 수백 시간 동안 위치시킨 후에도 이들 중량을 유지한다. 대조적으로, 부식방지 처리를 받지 않은 스테인리스 스틸의 동등한 시료는 1 내지 24 시간 내에 그 중량이 감소된다. 황산 수용액에서, 무처리 시료는 단기간내에 흑색 표면을 보여주거나 기포를 형성한다.As is evident from the results shown in Tables 1 to 9, the stainless steel samples treated with the aqueous hydrosylamine salt solution according to the present invention retain their weight even after being placed in heated aqueous sulfuric acid solution for several tens or hundreds of hours. In contrast, equivalent samples of stainless steel that have not been subjected to corrosion protection are reduced in weight within 1 to 24 hours. In aqueous sulfuric acid solution, the untreated sample shows black surface or bubbles in a short time.
따라서, 본 발명의 부식방지제 및 부식방지 처리는 스테인리스 스틸의 부식을 방지하는데 효과적이라는 것이 명백하다.Therefore, it is apparent that the corrosion inhibitor and the corrosion treatment of the present invention are effective in preventing corrosion of stainless steel.
히드록실아민 염을 함유하는 본 발명의 부식방지제는 스테인리스 스틸, 특히 크롬-함유 스테인리스 스틸의 내부식성을 현저히 증진시키는데 중요하다. 더욱이, 본 발명에 따른 부식방지 처리 방법은 장기간 동안 산성 또는 염기성 조건과 같은 격한 조건하에 위치한 스테인리스 스틸의 부식을 방지한다. 이것은 불순물인 부식 생성물의 이동 및 이들의 오염을 효과적으로 막는 것을 의미한다.The preservatives of the present invention containing hydroxylamine salts are important for significantly improving the corrosion resistance of stainless steel, in particular chromium-containing stainless steel. Moreover, the anticorrosion treatment method according to the invention prevents the corrosion of stainless steel placed under severe conditions such as acidic or basic conditions for a long time. This means effectively preventing the movement of corrosion products which are impurities and their contamination.
Claims (5)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JPJP-P-2000-00083529 | 2000-03-24 | ||
| JP2000083529A JP2001271184A (en) | 2000-03-24 | 2000-03-24 | Corrosion protection treating agent and method for stainless steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20030007476A true KR20030007476A (en) | 2003-01-23 |
Family
ID=18600147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020027012610A KR20030007476A (en) | 2000-03-24 | 2001-03-23 | Anticorrosive agent for stainless steel and method of anticorrosive treatment of stainless steel |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20010032658A1 (en) |
| EP (1) | EP1266981A4 (en) |
| JP (1) | JP2001271184A (en) |
| KR (1) | KR20030007476A (en) |
| CN (1) | CN1429281A (en) |
| AU (1) | AU4276401A (en) |
| WO (1) | WO2001071061A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103966591B (en) * | 2013-01-30 | 2017-03-29 | 中国科学院金属研究所 | A kind of chemical treatment method for improving austenitic stainless steel corrosion resistance |
| CN105694538A (en) * | 2016-01-05 | 2016-06-22 | 萧县金鹭纺织品有限公司 | Preparation method of low-oil-absorption-amount anticorrosion iron oxide red pigment |
Family Cites Families (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 |
| CH689307A5 (en) * | 1995-04-13 | 1999-02-15 | Cement Intellectual Property L | Process for both corrosion inhibition and strengthening the bonding properties of reinforcing metals. |
-
2000
- 2000-03-24 JP JP2000083529A patent/JP2001271184A/en not_active Withdrawn
-
2001
- 2001-03-23 WO PCT/JP2001/002319 patent/WO2001071061A1/en not_active Application Discontinuation
- 2001-03-23 CN CN01809442A patent/CN1429281A/en active Pending
- 2001-03-23 KR KR1020027012610A patent/KR20030007476A/en 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
Also Published As
| Publication number | Publication date |
|---|---|
| AU4276401A (en) | 2001-10-03 |
| EP1266981A4 (en) | 2006-12-27 |
| JP2001271184A (en) | 2001-10-02 |
| CN1429281A (en) | 2003-07-09 |
| US20010032658A1 (en) | 2001-10-25 |
| EP1266981A1 (en) | 2002-12-18 |
| WO2001071061A1 (en) | 2001-09-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Abd El–Maksoud | The effect of organic compounds on the electrochemical behaviour of steel in acidic media. A review. | |
| EP0012478B1 (en) | Method for removing sulfide-containing scale from metal surfaces | |
| EP0086245B1 (en) | Aqueous acid metal cleaning composition and method of use | |
| EP2706110B1 (en) | Aqueous acid cleaning, corrosion and stain inhibiting compositions in the vapor phase comprising a blend of nitric and sulfuric acid, and method of cleaning a stainless steel | |
| US5614028A (en) | Method of cleaning and passivating a metal surface with acidic system and ethoxylated tertiary dodecyl mercaptan | |
| US3854996A (en) | Method for removing magnetite scale | |
| EP0021602B1 (en) | Treatment of tin plate surfaces against sulphide staining | |
| KR20030007476A (en) | Anticorrosive agent for stainless steel and method of anticorrosive treatment of stainless steel | |
| US2450861A (en) | Composition for descaling ferrous metal | |
| US3335090A (en) | Corrosion inhibition with propargyl benzylamine | |
| US3337470A (en) | Corrosion inhibition with propargyl cyclohexylamine | |
| CN109536967B (en) | Austenitic stainless steel stress corrosion inhibitor and preparation method thereof | |
| JPH072993B2 (en) | Baths and methods for chemical polishing of stainless steel surfaces. | |
| US2505785A (en) | Method of producing a corrosion inhibitive coating on ferrous metals | |
| US3282850A (en) | Corrosion inhibition with dipropargyl butylamine | |
| US3428566A (en) | Process of corrosion inhibition with 1-hexyn-3-ol | |
| US1961097A (en) | Inhibiting process and product | |
| WO1982000836A1 (en) | A method of controlling or regulating the composition of pickling bath solutions for acid pickling metallic materials | |
| RU2783432C1 (en) | Method for passivation of the contact surface of equipment made of austenitic nickel-containing steel for protection against aggressive media | |
| JP2003105571A (en) | Corrosion inhibition method for surface of stainless steel molding | |
| US2050204A (en) | Pickling inhibitor | |
| EP0398202A1 (en) | Composition and process for zinc phosphating | |
| Jasrai et al. | Corrosion inhibition of zinc in hydrochloric acid by vanillin, phenyl thiourea and N-allyl thiourea | |
| Goodrich et al. | The Dissolution of Steel in the System NH 4 NO 3‐NH 3‐H 2 O | |
| US1789805A (en) | Chemical composition and metal-treatment process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| E601 | Decision to refuse application |