JPS56119785A - Corrosion prevention for steel structure in ocean environment - Google Patents
Corrosion prevention for steel structure in ocean environmentInfo
- Publication number
- JPS56119785A JPS56119785A JP2361880A JP2361880A JPS56119785A JP S56119785 A JPS56119785 A JP S56119785A JP 2361880 A JP2361880 A JP 2361880A JP 2361880 A JP2361880 A JP 2361880A JP S56119785 A JPS56119785 A JP S56119785A
- Authority
- JP
- Japan
- Prior art keywords
- iron
- corrosion
- melt
- steel structures
- anodes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
PURPOSE: To protect iron and steel structures in the ocean environment against sea water corrosion for a long period by subjecting said structures to the combination of corrosion prevention by Al coating with electrolytic protection by a sarcrificial electrode method, and suppressing the elution of the coated Al by sacrificial electrodes.
CONSTITUTION: Since the tide affected parts exposed alternately to sea water and air in iron and steel structures such as steel pipe piles installed in ocean environments receive heavy corrosion, Al of ≥99.7% purity is melt-sprayed thereto to 0.15W0.25mm thickness. An alloy of Al and Hg, Sn or Ga having a potential baser by 0W100mV than that of the above-mentioned Al is mounted as the 1st sacrificial anodes within a range of 1,000mm below these Al-melt-sprayed parts and further the 2nd sacrificial anode of the same quality as that of the 1st electrode is mounted in a range of 1,000mm below said 1st anodes. The excessive elution of the Al melt- sprayed layer provided to the tidal parts of the iron and steel structures is prevented by the effect of these anodes, and the iron and steel structures are prevented from corrosion over a long period in the sea.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55023618A JPS5858430B2 (en) | 1980-02-26 | 1980-02-26 | Corrosion prevention method for steel structures in marine environment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55023618A JPS5858430B2 (en) | 1980-02-26 | 1980-02-26 | Corrosion prevention method for steel structures in marine environment |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56119785A true JPS56119785A (en) | 1981-09-19 |
JPS5858430B2 JPS5858430B2 (en) | 1983-12-24 |
Family
ID=12115590
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55023618A Expired JPS5858430B2 (en) | 1980-02-26 | 1980-02-26 | Corrosion prevention method for steel structures in marine environment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5858430B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0651075A1 (en) * | 1993-10-29 | 1995-05-03 | ETAT FRANCAIS Représenté par le délÀ©gué général pour l'armement | Aluminium alloy based cathodic protection consumable anode |
JP2018066045A (en) * | 2016-10-20 | 2018-04-26 | 国立研究開発法人 海上・港湾・航空技術研究所 | Corrosion proofing method for steel material |
-
1980
- 1980-02-26 JP JP55023618A patent/JPS5858430B2/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0651075A1 (en) * | 1993-10-29 | 1995-05-03 | ETAT FRANCAIS Représenté par le délÀ©gué général pour l'armement | Aluminium alloy based cathodic protection consumable anode |
FR2713244A1 (en) * | 1993-10-29 | 1995-06-09 | France Etat Armement | Consumable cathode protection anode made of aluminum alloy. |
US5547560A (en) * | 1993-10-29 | 1996-08-20 | Etat Francais Represented By The Delegue General Pour L'armement | Consumable anode for cathodic protection, made of aluminum-based alloy |
JP2018066045A (en) * | 2016-10-20 | 2018-04-26 | 国立研究開発法人 海上・港湾・航空技術研究所 | Corrosion proofing method for steel material |
Also Published As
Publication number | Publication date |
---|---|
JPS5858430B2 (en) | 1983-12-24 |
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