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GB656326A - Improved rapid-wetting gypsum-base backfill for cathodic protection of metals - Google Patents

Improved rapid-wetting gypsum-base backfill for cathodic protection of metals

Info

Publication number
GB656326A
GB656326A GB336/49A GB33649A GB656326A GB 656326 A GB656326 A GB 656326A GB 336/49 A GB336/49 A GB 336/49A GB 33649 A GB33649 A GB 33649A GB 656326 A GB656326 A GB 656326A
Authority
GB
United Kingdom
Prior art keywords
magnesium
per cent
gypsum
wetting
metals
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
GB336/49A
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.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
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 Dow Chemical Co filed Critical Dow Chemical Co
Publication of GB656326A publication Critical patent/GB656326A/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

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

656,326. Preventing corosion. DOW CHEMICAL CO. Jan. 5,1949, No. 336. Convention date, Jan. 7, 1948. Drawings to Specification. [Class 123(i)] A free-flowing powder composition for surrounding the anode in a cathodic protector system for underground pipes consists of 70 to 89 per cent by weight of powdered gypsum, 25 to 10 per cent powdered bentonite, and 5 to 1 per cent of a watersoluble salt of a metal, e.g. sodium sulphate. Other salts mentioned are magnesium sulphate, potassium sulphate, and sodium chloride. The composition surrounds the anode, which is of magnesium or a magnesium-base alloy, and which is buried in, the earth and is connected electrically with the pipe to be protected. The composition may be carried in a water permeable carton, e.g. of paper.
GB336/49A 1948-01-07 1949-01-05 Improved rapid-wetting gypsum-base backfill for cathodic protection of metals Expired GB656326A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US982A US2480087A (en) 1948-01-07 1948-01-07 Rapid-wetting gypsum-base backfill for cathodic protection

Publications (1)

Publication Number Publication Date
GB656326A true GB656326A (en) 1951-08-22

Family

ID=21693820

Family Applications (1)

Application Number Title Priority Date Filing Date
GB336/49A Expired GB656326A (en) 1948-01-07 1949-01-05 Improved rapid-wetting gypsum-base backfill for cathodic protection of metals

Country Status (2)

Country Link
US (1) US2480087A (en)
GB (1) GB656326A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE972602C (en) * 1953-12-02 1959-08-20 Heinrich Dr-Ing Stein Bedding compounds for galvanic anodes, which are used for cathodic corrosion protection
DE1800197B1 (en) * 1968-10-01 1970-07-09 Stein Dr Ing Heinrich Impressed current anode
RU2633686C1 (en) * 2016-05-31 2017-10-16 Публичное акционерное общество "Татнефть" имени В.Д. Шашина Method of cathode protection of casing strings of wells and oil-field pipelines against corrosion

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2810690A (en) * 1950-08-28 1957-10-22 Houston Oil Field Mat Co Inc Anode backfill
US2847375A (en) * 1953-07-13 1958-08-12 Texas Co Apparatus for corrosion prevention
DE3103558C2 (en) * 1981-02-03 1985-08-08 Deutsche Gesellschaft für Wiederaufarbeitung von Kernbrennstoffen mbH, 3000 Hannover Corrosion protection
US4427517A (en) * 1982-03-01 1984-01-24 The Dow Chemical Company Underground backfill for magnesium anodes
US4435264A (en) 1982-03-01 1984-03-06 The Dow Chemical Company Magnesium anode backfills
US4435263A (en) 1982-03-01 1984-03-06 The Dow Chemical Company Backfill for magnesium galvanic anodes
US4511444A (en) * 1983-09-01 1985-04-16 Columbia Gas Systems Service Corp. Backfill for magnesium anodes
US5174871A (en) * 1991-06-27 1992-12-29 Interprovincial Corrosion Control Company Limited Method for providing cathodic protection of underground structures
JP2006255613A (en) * 2005-03-17 2006-09-28 Seiki Shiga Method and apparatus for forming activated hydrogen-dissolved water, gypsum supply member for formation, forming substance of activated hydrogen, and its production method
US10718109B2 (en) * 2015-04-10 2020-07-21 Kenneth Kyle Friesen Preventing corrosion in a greenhouse
CN117552010B (en) * 2024-01-11 2024-03-19 中冶建筑研究总院（深圳）有限公司 Device and method for corrosion prevention of concrete equipment using seawater and sea sand

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE972602C (en) * 1953-12-02 1959-08-20 Heinrich Dr-Ing Stein Bedding compounds for galvanic anodes, which are used for cathodic corrosion protection
DE1800197B1 (en) * 1968-10-01 1970-07-09 Stein Dr Ing Heinrich Impressed current anode
RU2633686C1 (en) * 2016-05-31 2017-10-16 Публичное акционерное общество "Татнефть" имени В.Д. Шашина Method of cathode protection of casing strings of wells and oil-field pipelines against corrosion

Also Published As

Publication number Publication date
US2480087A (en) 1949-08-23

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