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GB672110A - Sacrificial anode system for protecting metals in seawater - Google Patents

Sacrificial anode system for protecting metals in seawater

Info

Publication number
GB672110A
GB672110A GB14786/50A GB1478650A GB672110A GB 672110 A GB672110 A GB 672110A GB 14786/50 A GB14786/50 A GB 14786/50A GB 1478650 A GB1478650 A GB 1478650A GB 672110 A GB672110 A GB 672110A
Authority
GB
United Kingdom
Prior art keywords
per
magnesium
immersed
metal
sea water
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.)
Expired
Application number
GB14786/50A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dow Chemical Co filed Critical Dow Chemical Co
Publication of GB672110A publication Critical patent/GB672110A/en
Expired legal-status Critical Current

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
    • C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
    • C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
    • C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
    • C23F13/08—Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
    • C23F13/10—Electrodes characterised by the structure
    • 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
    • C23F2213/00—Aspects of inhibiting corrosion of metals by anodic or cathodic protection
    • C23F2213/30—Anodic or cathodic protection specially adapted for a specific object
    • C23F2213/31—Immersed structures, e.g. submarine structures

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Prevention Of Electric Corrosion (AREA)

Abstract

672,110. Electrolytic protection of immersed structures. DOW CHEMICAL CO. June 13, 1950 [June 15, 1949], No. 14786/50. Class 41. [Also in Group XVIII] An electrical system for the protection of a structure immersed in sea water and formed of a corrodible metal no more anodic than zinc, comprises a first-current self-exciting source consisting of a rapidly-expandable quantity of magnesium metal submerged in the sea water near the structure and connected electrically thereto, the quantity of metal having a surface area of at least 0.5 sq. feet per lb. and such mass as to correspond to at least 0.12 lb per sq. foot of structure to be protected, and a secondcurrent source also connected to the structure and of magnitude sufficient to provide a current corresponding to at least 0.002 amps per sq. ft. of structure for a period of at least a year. Preferably the second-current source is a slowly expandable quantity of magnesium metal having a surface area of less than 0.1 sq. ft. per lb. and of such mass as to correspond to at least 0.036 lb. per sq. ft. of structure being protected. As shown, a vertical steel pile bulkhead 6 immersed in sea water 7 has lengths of magnesium ribbon 8 attached at the top along the bulkhead and hanging down into the water. Each ribbon has a central core of steel wire and forms the first-current source. The secorid-current source is provided by stringing on and welding several magnesium anodes 11 to electrically-conducting cables 13 which are swung from eyebolts 15 mounted on brackets 16 welded to the pile 6 at intervals along its length. Each anode has a steel core welded to the cable. Specification 540,487 and U.S.A. Specification 2,200,469 are referred to.
GB14786/50A 1949-06-15 1950-06-13 Sacrificial anode system for protecting metals in seawater Expired GB672110A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US99156A US2571062A (en) 1949-06-15 1949-06-15 Sacrificial anode system for protecting metals in sea water

Publications (1)

Publication Number Publication Date
GB672110A true GB672110A (en) 1952-05-14

Family

ID=22273172

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14786/50A Expired GB672110A (en) 1949-06-15 1950-06-13 Sacrificial anode system for protecting metals in seawater

Country Status (2)

Country Link
US (1) US2571062A (en)
GB (1) GB672110A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111826660A (en) * 2020-08-31 2020-10-27 大连科迈尔防腐科技有限公司 Sacrificial anode structure of tensioning formula installation
CN111893493A (en) * 2020-08-31 2020-11-06 大连科迈尔防腐科技有限公司 Tensioning type sacrificial anode system for offshore wind power cathodic protection

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE521935A (en) * 1952-08-05
US2772231A (en) * 1952-11-26 1956-11-27 Hughes & Co Anodes for the protection of metal structures against corrosion
US2775554A (en) * 1954-04-29 1956-12-25 Dow Chemical Co Galvanic anode installation
US2802781A (en) * 1954-05-12 1957-08-13 Dow Chemical Co Cathodic protection apparatus
US2870079A (en) * 1954-11-16 1959-01-20 Texas Co Cathodic protection of metal structures
NL97249C (en) * 1954-11-18
US3152059A (en) * 1960-05-24 1964-10-06 Cons Mining & Smelting Co Sacrificial zinc anode
DE1224114B (en) * 1960-07-07 1966-09-01 Siemens Ag Anode chain for electrical corrosion protection
US3145089A (en) * 1961-03-01 1964-08-18 Norton Orlo Clair Corrosion preventing air drier
US3484349A (en) * 1967-02-09 1969-12-16 United States Steel Corp Method of protecting buried steel bodies against corrosion
FR2364274A1 (en) * 1976-09-13 1978-04-07 Elf Aquitaine CATHODIC PROTECTION OF A STRUCTURE AT SEA BY SACRIFICIAL ANODES
US4484839A (en) * 1983-09-28 1984-11-27 Shell Offshore Inc. Method and apparatus for installing anodes on steel platforms at offshore locations
US4484840A (en) * 1983-09-28 1984-11-27 Shell Offshore Inc. Method and apparatus for installing anodes on steel platforms at offshore locations
US7635237B2 (en) * 2007-02-21 2009-12-22 Lenard Spears Retrievable surface installed cathodic protection for marine structures
US8118983B1 (en) 2010-01-15 2012-02-21 Brunswick Corporation System for inhibiting corrosion of submerged components in a marine propulsion system
US10781962B2 (en) 2017-08-18 2020-09-22 Baker Hughes, A Ge Company, Llc Corrosion protection element for downhole connections

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2200469A (en) * 1939-11-08 1940-05-14 Cox George Chandler Anticorrosive and antifouling coating and method of application
US2444174A (en) * 1943-08-24 1948-06-29 Standard Oil Dev Co Galvanic coating process
US2478478A (en) * 1947-02-03 1949-08-09 Dow Chemical Co Potential gradient anode for galvanic protection

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111826660A (en) * 2020-08-31 2020-10-27 大连科迈尔防腐科技有限公司 Sacrificial anode structure of tensioning formula installation
CN111893493A (en) * 2020-08-31 2020-11-06 大连科迈尔防腐科技有限公司 Tensioning type sacrificial anode system for offshore wind power cathodic protection
CN111893493B (en) * 2020-08-31 2024-08-06 大连科迈尔海洋科技有限公司 Tensioning type sacrificial anode system for offshore wind power cathode protection
CN111826660B (en) * 2020-08-31 2024-10-18 大连科迈尔海洋科技有限公司 Sacrificial anode structure of tensioning type installation

Also Published As

Publication number Publication date
US2571062A (en) 1951-10-09

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