FR2361477A1 - Corrosion protection of plant in chemical and allied industries - where plant is alternately anodically polarised and short circuited - Google Patents

Corrosion protection of plant in chemical and allied industries - where plant is alternately anodically polarised and short circuited

Info

Publication number
FR2361477A1
FR2361477A1 FR7624645A FR7624645A FR2361477A1 FR 2361477 A1 FR2361477 A1 FR 2361477A1 FR 7624645 A FR7624645 A FR 7624645A FR 7624645 A FR7624645 A FR 7624645A FR 2361477 A1 FR2361477 A1 FR 2361477A1
Authority
FR
France
Prior art keywords
plant
corrosion protection
chemical
short circuited
allied industries
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
FR7624645A
Other languages
French (fr)
Other versions
FR2361477B1 (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 FR7624645A priority Critical patent/FR2361477A1/en
Publication of FR2361477A1 publication Critical patent/FR2361477A1/en
Application granted granted Critical
Publication of FR2361477B1 publication Critical patent/FR2361477B1/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
    • C23F13/005—Anodic 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
    • C23F2213/21—Constructional parts or assemblies of the anodic or cathodic protection apparatus combining at least two types of anodic or cathodic protection

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Paper (AREA)

Abstract

A polarising current is periodically applied via a cathode to keep the anodic potential of the object within prescribed limits; and, during the pauses between the supply of current, the anode is short circuited with the cathode. Used in corrosion protection of plant in the chemical-, food- and textile- industries, and in the mfr. of cellulose or paper, Where a passive layer is formed on the metal plant. The short circuit assists in maintaining the desired anodic potential so the control equipment is less frequently switched on and off and the corrosion protection is more reliable.
FR7624645A 1976-08-12 1976-08-12 Corrosion protection of plant in chemical and allied industries - where plant is alternately anodically polarised and short circuited Granted FR2361477A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7624645A FR2361477A1 (en) 1976-08-12 1976-08-12 Corrosion protection of plant in chemical and allied industries - where plant is alternately anodically polarised and short circuited

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7624645A FR2361477A1 (en) 1976-08-12 1976-08-12 Corrosion protection of plant in chemical and allied industries - where plant is alternately anodically polarised and short circuited

Publications (2)

Publication Number Publication Date
FR2361477A1 true FR2361477A1 (en) 1978-03-10
FR2361477B1 FR2361477B1 (en) 1978-12-29

Family

ID=9176829

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7624645A Granted FR2361477A1 (en) 1976-08-12 1976-08-12 Corrosion protection of plant in chemical and allied industries - where plant is alternately anodically polarised and short circuited

Country Status (1)

Country Link
FR (1) FR2361477A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2348140A1 (en) * 2008-09-26 2011-07-27 Rozen, Andrei Evgenievich Multilayer material with enhanced corrosion resistance (variants) and methods for preparing same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1097749A (en) * 1953-03-28 1955-07-08 Stamicarbon Process for the protection of stainless steel against attack by strongly acidic corrosive liquids, as well as stainless steel devices protected by this process
FR1239322A (en) * 1957-07-26 1960-08-26 Ici Ltd Process for improving the resistance of metals to corrosion

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1097749A (en) * 1953-03-28 1955-07-08 Stamicarbon Process for the protection of stainless steel against attack by strongly acidic corrosive liquids, as well as stainless steel devices protected by this process
FR1239322A (en) * 1957-07-26 1960-08-26 Ici Ltd Process for improving the resistance of metals to corrosion

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2348140A1 (en) * 2008-09-26 2011-07-27 Rozen, Andrei Evgenievich Multilayer material with enhanced corrosion resistance (variants) and methods for preparing same
EP2348140A4 (en) * 2008-09-26 2013-08-07 Rozen Andrei Evgenievich Multilayer material with enhanced corrosion resistance (variants) and methods for preparing same

Also Published As

Publication number Publication date
FR2361477B1 (en) 1978-12-29

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Legal Events

Date Code Title Description
ST Notification of lapse