GB960723A - Improvements in or relating to cathodic protection of metals - Google Patents

Improvements in or relating to cathodic protection of metals

Info

Publication number
GB960723A
GB960723A GB3899961A GB3899961A GB960723A GB 960723 A GB960723 A GB 960723A GB 3899961 A GB3899961 A GB 3899961A GB 3899961 A GB3899961 A GB 3899961A GB 960723 A GB960723 A GB 960723A
Authority
GB
United Kingdom
Prior art keywords
anode
base
passivity
area
steel insert
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
GB3899961A
Inventor
Geoffrey Baynard Bonds
Peter Edmund De Waele
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.)
SEAGUARD Ltd
Original Assignee
SEAGUARD Ltd
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 SEAGUARD Ltd filed Critical SEAGUARD Ltd
Priority to GB3899961A priority Critical patent/GB960723A/en
Publication of GB960723A publication Critical patent/GB960723A/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

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

<PICT:0960723/C6-C7/1> Cathodic protection sacrificial anodes adapted to be secured to a supporting surface are provided with an area of passivity on a portion of the anode surface with a reinforcing galvanized steel insert disposed adjacent said portion and projecting from the anode for securing the anode to said supporting surface; said anodes being used in crude oil-carrying tanks of oil tanker ships which receive water ballast when not carrying oil. The area of passivity is provided by coating said portion of the anode surface with a passive-imparting material capable of resisting the action of crude oil for the working life of the anode. The passive-imparting material may be an epoxy resin and the sacrificial anode is made of zinc or an alloy thereof but may be of other materials, such as aluminium. The anode (1) is of triangular or wedge cross-sectional shape having a base (4) shorter than the other 2 sides, said base forming the surface of the anode providing an area of passivity, with the reinforcing galvanised steel insert (3) adjacent said base. The apex of the aforementioned shape may be removed to provde a truncated form (2) having additional anodic surface. The steel insert projects on either side of the anode, the lugs so formed having holes or slots for attaching the anode to a support. The base (4) is coated with epoxy resin.
GB3899961A 1961-10-31 1961-10-31 Improvements in or relating to cathodic protection of metals Expired GB960723A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3899961A GB960723A (en) 1961-10-31 1961-10-31 Improvements in or relating to cathodic protection of metals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3899961A GB960723A (en) 1961-10-31 1961-10-31 Improvements in or relating to cathodic protection of metals

Publications (1)

Publication Number Publication Date
GB960723A true GB960723A (en) 1964-06-17

Family

ID=10406991

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3899961A Expired GB960723A (en) 1961-10-31 1961-10-31 Improvements in or relating to cathodic protection of metals

Country Status (1)

Country Link
GB (1) GB960723A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3470077A (en) * 1967-09-07 1969-09-30 Magnesium Elektron Ltd Sacrificial anodes and method of using same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3470077A (en) * 1967-09-07 1969-09-30 Magnesium Elektron Ltd Sacrificial anodes and method of using same

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