FR2364976A1 - Anodic corrosion protection of metal objects - with potential scanner applying auxiliary current source when potential discrepancies exist - Google Patents

Anodic corrosion protection of metal objects - with potential scanner applying auxiliary current source when potential discrepancies exist

Info

Publication number
FR2364976A1
FR2364976A1 FR7628353A FR7628353A FR2364976A1 FR 2364976 A1 FR2364976 A1 FR 2364976A1 FR 7628353 A FR7628353 A FR 7628353A FR 7628353 A FR7628353 A FR 7628353A FR 2364976 A1 FR2364976 A1 FR 2364976A1
Authority
FR
France
Prior art keywords
potential
current source
auxiliary current
metal objects
corrosion protection
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
FR7628353A
Other languages
French (fr)
Other versions
FR2364976B1 (en
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7628353A priority Critical patent/FR2364976A1/en
Publication of FR2364976A1 publication Critical patent/FR2364976A1/en
Application granted granted Critical
Publication of FR2364976B1 publication Critical patent/FR2364976B1/fr
Granted 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
    • C23F13/005—Anodic protection

Landscapes

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

Abstract

Anodic protection. against corrosion for metal objects in the chemical, food, textile and cellulose/paper industry which are in contact with aggressive media is based on potential regulators which are connected via a controlled switch with their positive poles to the objects and with their negative poles to cathodes. A reference electrode feeds the input of each regulator. An additional reference electrode near each object is periodically scanned, and a potentiometer connected to it applies an auxiliary current source to the object if the potential differs from a set value. This avoids corrosion during repair or maintenance periods or during faults in the potential regulators or sudden increases of the aggressivity of the corrosive medium. It provides for an individual protection of each object if several of them are connected up.
FR7628353A 1976-09-21 1976-09-21 Anodic corrosion protection of metal objects - with potential scanner applying auxiliary current source when potential discrepancies exist Granted FR2364976A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7628353A FR2364976A1 (en) 1976-09-21 1976-09-21 Anodic corrosion protection of metal objects - with potential scanner applying auxiliary current source when potential discrepancies exist

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7628353A FR2364976A1 (en) 1976-09-21 1976-09-21 Anodic corrosion protection of metal objects - with potential scanner applying auxiliary current source when potential discrepancies exist

Publications (2)

Publication Number Publication Date
FR2364976A1 true FR2364976A1 (en) 1978-04-14
FR2364976B1 FR2364976B1 (en) 1979-01-12

Family

ID=9177909

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7628353A Granted FR2364976A1 (en) 1976-09-21 1976-09-21 Anodic corrosion protection of metal objects - with potential scanner applying auxiliary current source when potential discrepancies exist

Country Status (1)

Country Link
FR (1) FR2364976A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1023731A (en) * 1963-12-28 1966-03-23 Stocznia Im Komuny Paryskiej Apparatus for cathodic and anodic protection against corrosion of metal objects which are in contact with electrolytes

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1023731A (en) * 1963-12-28 1966-03-23 Stocznia Im Komuny Paryskiej Apparatus for cathodic and anodic protection against corrosion of metal objects which are in contact with electrolytes

Also Published As

Publication number Publication date
FR2364976B1 (en) 1979-01-12

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Legal Events

Date Code Title Description
ST Notification of lapse