EP0488995A3 - Corrosion protection - Google Patents

Corrosion protection Download PDF

Info

Publication number
EP0488995A3
EP0488995A3 EP19920103118 EP92103118A EP0488995A3 EP 0488995 A3 EP0488995 A3 EP 0488995A3 EP 19920103118 EP19920103118 EP 19920103118 EP 92103118 A EP92103118 A EP 92103118A EP 0488995 A3 EP0488995 A3 EP 0488995A3
Authority
EP
European Patent Office
Prior art keywords
electrode
corrosion protection
barrier
counter
substrate
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
Application number
EP19920103118
Other versions
EP0488995B1 (en
EP0488995A2 (en
Inventor
James Patrick Reed
Albert Highe
Michael Masia
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.)
Raychem Corp
Original Assignee
Raychem Corp
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 Raychem Corp filed Critical Raychem Corp
Publication of EP0488995A2 publication Critical patent/EP0488995A2/en
Publication of EP0488995A3 publication Critical patent/EP0488995A3/en
Application granted granted Critical
Publication of EP0488995B1 publication Critical patent/EP0488995B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C23F13/04—Controlling or regulating desired parameters
    • 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
    • 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
    • C23F13/16—Electrodes characterised by the combination of the structure and the material

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)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
  • Thermistors And Varistors (AREA)

Abstract

Corrosion protection systems which make use of a barrier (2) which is placed between a corrodible substrate (3) and a counter-electrode (2). The barrier can provide more uniform current distribution on the substrate, and/or enable the counter-electrode to be more easily maintained or replaced, and/or reduce the rate at which the current density on an elongate electrode changes with distance from the power source, and/or provide a controlled environment around the electrode to improve its efficiency. <IMAGE>
EP92103118A 1986-07-18 1987-07-17 Corrosion protection Expired - Lifetime EP0488995B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US88819886A 1986-07-18 1986-07-18
US888198 1986-07-18
EP87306336A EP0253671B1 (en) 1986-07-18 1987-07-17 Corrosion protection

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP87306336.6 Division 1987-07-17

Publications (3)

Publication Number Publication Date
EP0488995A2 EP0488995A2 (en) 1992-06-03
EP0488995A3 true EP0488995A3 (en) 1992-07-01
EP0488995B1 EP0488995B1 (en) 1995-10-25

Family

ID=25392719

Family Applications (2)

Application Number Title Priority Date Filing Date
EP87306336A Expired - Lifetime EP0253671B1 (en) 1986-07-18 1987-07-17 Corrosion protection
EP92103118A Expired - Lifetime EP0488995B1 (en) 1986-07-18 1987-07-17 Corrosion protection

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP87306336A Expired - Lifetime EP0253671B1 (en) 1986-07-18 1987-07-17 Corrosion protection

Country Status (7)

Country Link
EP (2) EP0253671B1 (en)
JP (1) JPS6333587A (en)
AT (2) ATE80674T1 (en)
CA (1) CA1331160C (en)
DE (2) DE3751575T2 (en)
ES (1) ES2033852T3 (en)
NO (1) NO177355C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9426216D0 (en) * 1994-12-23 1995-02-22 Cathelco Ltd Descaling ships ballast tanks
ES2119692B1 (en) * 1996-07-12 1999-05-16 Lopez Calleja Lopez Jose Luis DEVICE, SYSTEM AND PROCEDURE FOR ELECTRICALLY INSULATING THE METALLIC STRUCTURE OF A BOAT FROM AN EXTERNAL MASS.
DE102014203659A1 (en) * 2014-02-28 2015-09-03 Siemens Aktiengesellschaft Cooling device for a converter of a high-voltage direct current transmission system

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3022242A (en) * 1959-01-23 1962-02-20 Engelhard Ind Inc Anode for cathodic protection systems
GB936470A (en) * 1959-12-17 1963-09-11 Haldor Frederik Axel Topsoe Anodes for the cathodic protection of iron parts in water
GB1161625A (en) * 1966-08-31 1969-08-13 Ingbureauj C Van Der Velde Hen Pipe Assembly, including a Pipe, a Casing, and a Measuring Electrode or Anode
US3616354A (en) * 1964-04-17 1971-10-26 Gordon Ian Russell Method for installing cathodic protection
GB1270426A (en) * 1968-10-28 1972-04-12 Tokyo Keiki Kk Electrical anti-corrosion devices
US4171254A (en) * 1976-12-30 1979-10-16 Exxon Research & Engineering Co. Shielded anodes
US4318787A (en) * 1980-02-22 1982-03-09 Conoco Inc. Sacrificial anode composition in cathodic protection process
US4457821A (en) * 1983-01-17 1984-07-03 Pennwalt Corporation Cathodic protection apparatus for well coated metal vessels having a gross bare area

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3022242A (en) * 1959-01-23 1962-02-20 Engelhard Ind Inc Anode for cathodic protection systems
GB936470A (en) * 1959-12-17 1963-09-11 Haldor Frederik Axel Topsoe Anodes for the cathodic protection of iron parts in water
US3616354A (en) * 1964-04-17 1971-10-26 Gordon Ian Russell Method for installing cathodic protection
GB1161625A (en) * 1966-08-31 1969-08-13 Ingbureauj C Van Der Velde Hen Pipe Assembly, including a Pipe, a Casing, and a Measuring Electrode or Anode
GB1270426A (en) * 1968-10-28 1972-04-12 Tokyo Keiki Kk Electrical anti-corrosion devices
US4171254A (en) * 1976-12-30 1979-10-16 Exxon Research & Engineering Co. Shielded anodes
US4318787A (en) * 1980-02-22 1982-03-09 Conoco Inc. Sacrificial anode composition in cathodic protection process
US4457821A (en) * 1983-01-17 1984-07-03 Pennwalt Corporation Cathodic protection apparatus for well coated metal vessels having a gross bare area

Also Published As

Publication number Publication date
DE3781735D1 (en) 1992-10-22
EP0488995B1 (en) 1995-10-25
ATE129529T1 (en) 1995-11-15
EP0253671B1 (en) 1992-09-16
JPS6333587A (en) 1988-02-13
DE3751575D1 (en) 1995-11-30
DE3781735T2 (en) 1993-04-22
EP0253671A3 (en) 1988-08-03
NO873015L (en) 1988-01-19
ES2033852T3 (en) 1993-04-01
ATE80674T1 (en) 1992-10-15
NO873015D0 (en) 1987-07-20
EP0488995A2 (en) 1992-06-03
DE3751575T2 (en) 1996-06-27
EP0253671A2 (en) 1988-01-20
NO177355C (en) 1995-09-06
CA1331160C (en) 1994-08-02
NO177355B (en) 1995-05-22

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