FR2358474A1 - Corrosion prevention in heat pipes carrying liquid metals - by adding metallic aluminium gives longer lasting action and avoids chemical transport - Google Patents

Corrosion prevention in heat pipes carrying liquid metals - by adding metallic aluminium gives longer lasting action and avoids chemical transport

Info

Publication number
FR2358474A1
FR2358474A1 FR7721720A FR7721720A FR2358474A1 FR 2358474 A1 FR2358474 A1 FR 2358474A1 FR 7721720 A FR7721720 A FR 7721720A FR 7721720 A FR7721720 A FR 7721720A FR 2358474 A1 FR2358474 A1 FR 2358474A1
Authority
FR
France
Prior art keywords
heat pipes
corrosion prevention
adding metallic
chemical transport
metallic aluminium
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.)
Pending
Application number
FR7721720A
Other languages
French (fr)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of FR2358474A1 publication Critical patent/FR2358474A1/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/08—Materials not undergoing a change of physical state when used
    • C09K5/10—Liquid materials
    • C09K5/12—Molten materials, i.e. materials solid at room temperature, e.g. metals or salts
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Abstract

Corrosion in heat transfer systems which use liquid alkali metals as the heat transport medium, is combated by adding metallic Al to the alkali metal in an amount dependent on the quantity of corrosion-inducing impurities (e.g. oxides, hydroxides and/or oxygen) present. The method avoids the costly ultra purification of the alkali metal and overcomes the problem of chemical transport which arises when using other additives (of, e.g. US 3726642). The method also gives longer-lasting protection.
FR7721720A 1976-07-17 1977-07-13 Corrosion prevention in heat pipes carrying liquid metals - by adding metallic aluminium gives longer lasting action and avoids chemical transport Pending FR2358474A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762632254 DE2632254A1 (en) 1976-07-17 1976-07-17 PROCEDURE FOR CORROSION PREVENTION

Publications (1)

Publication Number Publication Date
FR2358474A1 true FR2358474A1 (en) 1978-02-10

Family

ID=5983276

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7721720A Pending FR2358474A1 (en) 1976-07-17 1977-07-13 Corrosion prevention in heat pipes carrying liquid metals - by adding metallic aluminium gives longer lasting action and avoids chemical transport

Country Status (3)

Country Link
DE (1) DE2632254A1 (en)
FR (1) FR2358474A1 (en)
SE (1) SE7708189L (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2943034A (en) * 1955-10-19 1960-06-28 Mine Safety Appliances Co Inhibitors to transfer of structural material constituents in liquid sodium
US3432254A (en) * 1964-10-05 1969-03-11 Shell Oil Co Corrosion prevention
US3726642A (en) * 1971-12-29 1973-04-10 Atomic Energy Commission Suppression of corrosion of iron in sodium
US3745068A (en) * 1971-09-21 1973-07-10 Atomic Energy Commission Process of preventing nitridation of steel submerged in liquid sodium
FR2253844A1 (en) * 1973-12-06 1975-07-04 Philips Nv

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2943034A (en) * 1955-10-19 1960-06-28 Mine Safety Appliances Co Inhibitors to transfer of structural material constituents in liquid sodium
US3432254A (en) * 1964-10-05 1969-03-11 Shell Oil Co Corrosion prevention
US3745068A (en) * 1971-09-21 1973-07-10 Atomic Energy Commission Process of preventing nitridation of steel submerged in liquid sodium
US3726642A (en) * 1971-12-29 1973-04-10 Atomic Energy Commission Suppression of corrosion of iron in sodium
FR2253844A1 (en) * 1973-12-06 1975-07-04 Philips Nv

Also Published As

Publication number Publication date
SE7708189L (en) 1978-01-18
DE2632254A1 (en) 1978-01-19

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