GB372936A - A method of protecting lead against corrosion - Google Patents

A method of protecting lead against corrosion

Info

Publication number
GB372936A
GB372936A GB12953/31A GB1295331A GB372936A GB 372936 A GB372936 A GB 372936A GB 12953/31 A GB12953/31 A GB 12953/31A GB 1295331 A GB1295331 A GB 1295331A GB 372936 A GB372936 A GB 372936A
Authority
GB
United Kingdom
Prior art keywords
lead
sulphide
sulphur
protecting
against corrosion
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
GB12953/31A
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.)
Alcatel Lucent SAS
Original Assignee
Compagnie Generale dElectricite SA
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 Compagnie Generale dElectricite SA filed Critical Compagnie Generale dElectricite SA
Publication of GB372936A publication Critical patent/GB372936A/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
    • C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
    • C23F11/18—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using inorganic inhibitors
    • C23F11/182—Sulfur, boron or silicon containing compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08—Anti-corrosive paints

Landscapes

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

Abstract

Corrosion of lead pipes and the sheathing of electric cables having a protecting layer of tar, bitumen, cement, &c. is prevented by the formation on the lead surface of a stable lead salt, e.g. the sulphide, preferably by incorporating sulphur or a sulphur derivative in the protecting layer so that upon application a coating of lead sulphide will be formed directly on the lead. Protecting layers of tar containing at least 3 per cent sulphur and applied to the pipe at a temperature slightly above 100 DEG C. and of cement containing a small proportion of sodium sulphide are specifically mentioned.
GB12953/31A 1930-05-07 1931-05-01 A method of protecting lead against corrosion Expired GB372936A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE372936X 1930-05-07

Publications (1)

Publication Number Publication Date
GB372936A true GB372936A (en) 1932-05-19

Family

ID=6335082

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12953/31A Expired GB372936A (en) 1930-05-07 1931-05-01 A method of protecting lead against corrosion

Country Status (1)

Country Link
GB (1) GB372936A (en)

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