CA2944472C - Corrosion protection using a sacrificial anode - Google Patents

Corrosion protection using a sacrificial anode Download PDF

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Publication number
CA2944472C
CA2944472C CA2944472A CA2944472A CA2944472C CA 2944472 C CA2944472 C CA 2944472C CA 2944472 A CA2944472 A CA 2944472A CA 2944472 A CA2944472 A CA 2944472A CA 2944472 C CA2944472 C CA 2944472C
Authority
CA
Canada
Prior art keywords
anode
impressed current
sacrificial
sacrificial anode
power supply
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.)
Active
Application number
CA2944472A
Other languages
French (fr)
Other versions
CA2944472A1 (en
Inventor
George Sergi
Attanayake Mudiyanselage Gamini Seneviratne
David Whitmore
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.)
Vector Corrosion Technologies Ltd
Original Assignee
Vector Corrosion Technologies 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=49948141&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2944472(C) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from US13/553,489 external-priority patent/US20140021039A1/en
Priority claimed from US13/553,514 external-priority patent/US8968549B2/en
Priority claimed from US13/553,498 external-priority patent/US8961746B2/en
Application filed by Vector Corrosion Technologies Ltd filed Critical Vector Corrosion Technologies Ltd
Publication of CA2944472A1 publication Critical patent/CA2944472A1/en
Application granted granted Critical
Publication of CA2944472C publication Critical patent/CA2944472C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • C23F13/20—Conducting electric current to electrodes
    • 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
    • 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
    • C23F2201/00—Type of materials to be protected by cathodic protection
    • C23F2201/02—Concrete, e.g. reinforced
    • 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
    • C23F2213/20—Constructional parts or assemblies of the anodic or cathodic protection apparatus
    • C23F2213/21—Constructional parts or assemblies of the anodic or cathodic protection apparatus combining at least two types of anodic or cathodic protection
    • 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
    • C23F2213/20—Constructional parts or assemblies of the anodic or cathodic protection apparatus
    • C23F2213/22—Constructional parts or assemblies of the anodic or cathodic protection apparatus characterized by the ionic conductor, e.g. humectant, hydratant or backfill
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/015—Anti-corrosion coatings or treating compositions, e.g. containing waterglass or based on another metal

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

Corrosion protection of steel in concrete is provided by locating an anode assembly including both a sacrificial anode and an impressed current anode in contact with the concrete and providing an impressed current from a power supply to the anode. The impressed current anode forms a perforated sleeve surrounding a rod of the sacrificial anode material with an activated ionically-conductive filler material between. The system can be used without the power supply in sacrificial mode or when the power supply is connected, the impressed current anode can be powered to provide an impressed current system and/or to recharge the sacrificial anode from sacrificial anode corrosion products.
CA2944472A 2012-07-19 2013-07-18 Corrosion protection using a sacrificial anode Active CA2944472C (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US13/553,489 2012-07-19
US13/553,489 US20140021039A1 (en) 2012-07-19 2012-07-19 Apparatus for Cathodic Protection System Using an Impressed Current Anode and a Sacrificial Anode
US13/553,514 US8968549B2 (en) 2012-07-19 2012-07-19 Two stage cathodic protection system using impressed current and galvanic action
US13/553,514 2012-07-19
US13/553,498 2012-07-19
US13/553,498 US8961746B2 (en) 2012-07-19 2012-07-19 Charging a sacrificial anode with ions of the sacrificial material
CA2879430A CA2879430C (en) 2012-07-19 2013-07-18 Corrosion protection using a sacrificial anode

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA2879430A Division CA2879430C (en) 2012-07-19 2013-07-18 Corrosion protection using a sacrificial anode

Publications (2)

Publication Number Publication Date
CA2944472A1 CA2944472A1 (en) 2014-01-23
CA2944472C true CA2944472C (en) 2021-05-18

Family

ID=49948141

Family Applications (4)

Application Number Title Priority Date Filing Date
CA2936644A Active CA2936644C (en) 2012-07-19 2013-07-18 Corrosion protection using a sacrificial anode
CA2944472A Active CA2944472C (en) 2012-07-19 2013-07-18 Corrosion protection using a sacrificial anode
CA3089939A Pending CA3089939A1 (en) 2012-07-19 2013-07-18 Corrosion protection using a sacrificial anode
CA2879430A Active CA2879430C (en) 2012-07-19 2013-07-18 Corrosion protection using a sacrificial anode

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA2936644A Active CA2936644C (en) 2012-07-19 2013-07-18 Corrosion protection using a sacrificial anode

Family Applications After (2)

Application Number Title Priority Date Filing Date
CA3089939A Pending CA3089939A1 (en) 2012-07-19 2013-07-18 Corrosion protection using a sacrificial anode
CA2879430A Active CA2879430C (en) 2012-07-19 2013-07-18 Corrosion protection using a sacrificial anode

Country Status (5)

Country Link
EP (2) EP3623499A1 (en)
JP (3) JP6273654B2 (en)
AU (1) AU2013293019B2 (en)
CA (4) CA2936644C (en)
WO (1) WO2014012185A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE50006E1 (en) 2012-07-19 2024-06-11 Vector Corrosion Technologies Ltd. Corrosion protection using a sacrificial anode
US20150284860A1 (en) 2012-10-18 2015-10-08 Gareth Glass Protection of steel reinforced concrete elements
US9909220B2 (en) * 2014-12-01 2018-03-06 Vector Corrosion Technologies Ltd. Fastening sacrificial anodes to reinforcing bars in concrete for cathodic protection
EP4530374A2 (en) 2015-11-03 2025-04-02 Vector Corrosion Technologies Ltd Cathodic corrosion protection
JP2017179467A (en) * 2016-03-30 2017-10-05 株式会社ピーエス三菱 Electrical protection structure for reinforced concrete structure and method for measuring effect of the same
JP7116319B2 (en) * 2019-02-20 2022-08-10 日本電信電話株式会社 Anti-corrosion device
JP7377096B2 (en) * 2019-12-24 2023-11-09 株式会社クボタ Corrosion protection device for buried metal pipes and corrosion protection construction method for buried metal pipes

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Also Published As

Publication number Publication date
AU2013293019A1 (en) 2015-01-22
AU2013293019B2 (en) 2017-08-24
CA2936644A1 (en) 2014-01-23
JP2015525832A (en) 2015-09-07
JP2020015984A (en) 2020-01-30
CA2936644C (en) 2017-10-31
JP6590902B2 (en) 2019-10-16
CA2944472A1 (en) 2014-01-23
EP2875171A4 (en) 2016-07-06
JP6998066B2 (en) 2022-01-18
CA2879430C (en) 2023-06-13
CA2879430A1 (en) 2014-01-23
EP2875171B1 (en) 2024-01-03
JP2018076595A (en) 2018-05-17
EP2875171A1 (en) 2015-05-27
EP2875171C0 (en) 2024-01-03
JP6273654B2 (en) 2018-02-07
WO2014012185A1 (en) 2014-01-23
CA3089939A1 (en) 2014-01-23
EP3623499A1 (en) 2020-03-18

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