GB641021A - Improvements in or relating to installations for cathodically protecting undergroundmetallic structures - Google Patents

Improvements in or relating to installations for cathodically protecting undergroundmetallic structures

Info

Publication number
GB641021A
GB641021A GB34223/47A GB3422347A GB641021A GB 641021 A GB641021 A GB 641021A GB 34223/47 A GB34223/47 A GB 34223/47A GB 3422347 A GB3422347 A GB 3422347A GB 641021 A GB641021 A GB 641021A
Authority
GB
United Kingdom
Prior art keywords
per cent
undergroundmetallic
installations
relating
structures
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
GB34223/47A
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.)
Howmet Aerospace Inc
Original Assignee
Aluminum Company of America
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 Aluminum Company of America filed Critical Aluminum Company of America
Publication of GB641021A publication Critical patent/GB641021A/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
    • C23F13/12—Electrodes characterised by the material
    • C23F13/14—Material for sacrificial anodes

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

641,021. Preventing corrosion. ALUMINUM CO. OF AMERICA. Dec. 24, 1947, No. 34223. Convention date, Dec. 26, 1946. [Class 123(i)] An anode for use in cathodic systems for protecting underground metallic structures comprises an electrode of aluminous metal the surface of which is in contact with a mixture containing a mercury compound, e.g. mercurous chloride, which yields metallic mercury when in contact with aluminium. The mercurous chloride in an amount at least 0.001 per cent by dry weight of the mixture, and preferably of 0.05 per cent to 1.0 per cent, may be mixed with an inert material or with any chemical, e.g. inorganic halide, to promote the action of the cell. If desired, in addition, a coating containing the mercury compound may be applied directly to the electrode. Specification 641,022 is referred to.
GB34223/47A 1946-12-26 1947-12-24 Improvements in or relating to installations for cathodically protecting undergroundmetallic structures Expired GB641021A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US718595A US2541062A (en) 1946-12-26 1946-12-26 Utilization of aluminous metal electrodes in cathodic protection installations

Publications (1)

Publication Number Publication Date
GB641021A true GB641021A (en) 1950-08-02

Family

ID=24886685

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34223/47A Expired GB641021A (en) 1946-12-26 1947-12-24 Improvements in or relating to installations for cathodically protecting undergroundmetallic structures

Country Status (3)

Country Link
US (1) US2541062A (en)
FR (1) FR957880A (en)
GB (1) GB641021A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL74768C (en) * 1950-07-12
US2758082A (en) * 1952-08-13 1956-08-07 Frederick A Rohrman Cathodic protection
DE1090049B (en) * 1956-07-02 1960-09-29 Reynolds Metals Co Cathodic corrosion protection
DE3103558C2 (en) * 1981-02-03 1985-08-08 Deutsche Gesellschaft für Wiederaufarbeitung von Kernbrennstoffen mbH, 3000 Hannover Corrosion protection
CA1309971C (en) * 1987-08-25 1992-11-10 Hank St. Onge Internal and external corrosion protection of metal vessels
US5040599A (en) * 1989-12-04 1991-08-20 Phillips Petroleum Company Cathodic protection

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB437536A (en) * 1934-06-05 1935-10-31 Austin Gordon Lovell Pennock A new or improved galvanic battery

Also Published As

Publication number Publication date
FR957880A (en) 1950-02-28
US2541062A (en) 1951-02-13

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