KR102465483B1 - 내식성 향상을 위한 기능성 초발수 스테인리스 스틸 표면 개발 기술 - Google Patents
내식성 향상을 위한 기능성 초발수 스테인리스 스틸 표면 개발 기술 Download PDFInfo
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- KR102465483B1 KR102465483B1 KR1020210026735A KR20210026735A KR102465483B1 KR 102465483 B1 KR102465483 B1 KR 102465483B1 KR 1020210026735 A KR1020210026735 A KR 1020210026735A KR 20210026735 A KR20210026735 A KR 20210026735A KR 102465483 B1 KR102465483 B1 KR 102465483B1
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- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/34—Anodisation of metals or alloys not provided for in groups C25D11/04 - C25D11/32
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/18—Processes for applying liquids or other fluent materials performed by dipping
- B05D1/185—Processes for applying liquids or other fluent materials performed by dipping applying monomolecular layers
-
- 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
- C23C2222/00—Aspects relating to chemical surface treatment of metallic material by reaction of the surface with a reactive medium
- C23C2222/20—Use of solutions containing silanes
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
- Laminated Bodies (AREA)
Abstract
Description
도 2는 실시예에서 단계 1 내지 3까지 실시한 후 얻은 3개의 샘플 표면에 형성된 산화막의 표면 형상을 FE-SEM으로 관찰한 이미지이다.
도 3은 실시예에서 단계 1 내지 단계 3까지만 실시한 샘플(SAM 코팅 미실시)의 접촉각을 측정한 결과이다.
도 4는 실시예에서 단계 1 내지 단계 4까지 모두 실시한 샘플(SAM 코팅 실시)의 접촉각을 측정한 결과이다.
도 5는 실시예에서 단계 1 내지 단계 4까지 모두 실시한 샘플의 동전위분극 곡선을 나타낸 도면이다.
Dp(nm) | Dint(nm) | 고체분율 | |
30V | None | None | None |
50V | None | None | None |
70V | 115.79±17.46 | 137.06±15.31 | 0.355 |
SAM 코팅전 (°) | SAM 코팅후 (°) | |
30V | 59.26±4.45 | 115.02±2.99 |
50V | 44.87±4.46 | 119.69±1.78 |
70V | 17.04±3.14 | 161.80±1.00 |
Ecorr (mV) | Icorr (A/cm2) | IE (%) | |
무처리 SUS304 | -37.8 | 1.12×10-8 | 0 |
30V | 112 | 5.04×10-8 | 77.58 |
50V | 199 | 9.97×10-8 | 88.67 |
70V | 254 | 1.19×10-9 | 90.50 |
시간(h) | 전압(V) | 접촉각(°) | IE(%) | |
실시예 2-1 | 2.8 | 70 | 119.28±2.16 | 72.97 |
실시예 2-2 | 2.9 | 161.26±2.14 | 90.37 | |
실시예 2-3 (= 실시예 1-3) |
3.0 | 161.80±1.00 | 90.50 | |
실시예 2-4 | 3.1 | 160.87±1.58 | 90.41 | |
실시예 2-5 | 3.2 | 120.69±0.89 | 75.81 |
시간(h) | 전압(V) | 접촉각(°) | IE(%) | |
실시예 3-1 | 3.0 | 68 | 120.12±2.47 | 77.28 |
실시예 3-2 | 69 | 160.29±1.25 | 90.41 | |
실시예 3-3 (= 실시예 1-3) |
70 | 161.80±1.00 | 90.50 | |
실시예 3-4 | 71 | 160.11±1.36 | 90.48 | |
실시예 3-5 | 72 | 119.47±1.89 | 74.29 |
Claims (14)
- 스테인리스 스틸 표면을 세척하고 건조하는 단계(단계 1);
65-75 V 인가 전압에서 2.5-3.5 시간 동안 양극산화처리하여, 스테인리스 스틸 표면에 양극산화막을 형성하는 단계(단계 2);
플라즈마 처리하여 유기 잔여물을 제거하고 양극산화막 표면을 친수성으로 만드는 단계(단계 3); 및
SAM(Self-Assembled Monolayer) 코팅 가능한 소수성 코팅제로 코팅하는 단계(단계 4);를 포함하고,
상기 단계 2의 양극산화처리에 사용하는 전해질은 0.09-0.11M의 NH4F 및 0.09-0.11M의 물이 포함된 에틸렌글리콜이고, 상기 전해질의 온도는 -1 내지 1℃인 것을 특징으로 하는,
스테인리스 스틸 표면에 내식성(Corrosion resistance) 산화막을 형성하는 방법.
- 제1항에 있어서,
상기 스테인리스 스틸은 SUS 304 또는 SUS 304L인 것을 특징으로 하는 방법.
- 삭제
- 제1항에 있어서,
상기 단계 2의 양극산화처리는 68-72 V 인가 전압에서 2.8-3.2 시간 동안 처리하는 것을 특징으로 하는 방법.
- 제4항에 있어서,
상기 단계 2의 양극산화처리는 69-71 V 인가 전압에서 2.9-3.1 시간 동안 처리하는 것을 특징으로 하는 방법.
- 제1항에 있어서,
상기 SAM 코팅 가능한 소수성 코팅제는 1H,1H,2H,2H-퍼플로로데실트리클로로실란(FDTS), 트리클로로옥틸실란(OTS) 및 옥타데실트리클로로실란(ODTS) 중 어느 하나인 것을 특징으로 하는 방법.
- 제1항에 있어서,
스테인리스 스틸 표면에 접촉각 160° 이상의 양극산화막이 형성되는 것을 특징으로 하는 방법.
- 제1항에 있어서,
스테인리스 스틸 표면에 부식 억제율 90% 이상의 양극산화막이 형성되는 것을 특징으로 하는 방법.
- 제1항의 방법으로 제조된 초소수성 양극산화막이 형성된 스테인리스 스틸.
- 제1항의 방법으로 제조된 내식성 양극산화막이 형성된 스테인리스 스틸.
- 제1항의 방법으로 제조된 스테인리스 스틸을 포함하는 의료기기.
- 제1항의 방법으로 제조된 스테인리스 스틸을 포함하는 해상용 운송수단.
- 제1항의 방법으로 제조된 스테인리스 스틸을 포함하는 지상용 운송수단.
- 제1항의 방법으로 제조된 스테인리스 스틸을 포함하는 항공 운송수단.
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