GB1005993A - Thermally stable mixed oxides containing tungsten or molybdenum - Google Patents

Thermally stable mixed oxides containing tungsten or molybdenum

Info

Publication number
GB1005993A
GB1005993A GB41477/63A GB4147763A GB1005993A GB 1005993 A GB1005993 A GB 1005993A GB 41477/63 A GB41477/63 A GB 41477/63A GB 4147763 A GB4147763 A GB 4147763A GB 1005993 A GB1005993 A GB 1005993A
Authority
GB
United Kingdom
Prior art keywords
rare earth
molybdenum
crystalline structure
thermally stable
mixed oxides
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
GB41477/63A
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.)
US Atomic Energy Commission (AEC)
Original Assignee
US Atomic Energy Commission (AEC)
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 US Atomic Energy Commission (AEC) filed Critical US Atomic Energy Commission (AEC)
Publication of GB1005993A publication Critical patent/GB1005993A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C7/00—Control of nuclear reaction
    • G21C7/06—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section
    • G21C7/24—Selection of substances for use as neutron-absorbing material
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G1/00—Methods of preparing compounds of metals not covered by subclasses C01B, C01C, C01D, or C01F, in general
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G39/00—Compounds of molybdenum
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G41/00—Compounds of tungsten
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Powder Metallurgy (AREA)

Abstract

Mixed oxides of either molybdenum or tungsten trioxide with up to 3 mols. of the oxide of yttrium, lanthanium or a rare earth element having atomic number 59-71 inclusive, are prepared by firing in air a mixture containing the appropriate amounts of the oxides, or a slight excess, e.g. 5-10%, of MoO3 or WO3, at at least 1300 DEG C. Compounds claimed per se include WR6O12, having a rhombohedral crystalline structure, wherein R is yttrium or a rare earth metal from erbium to lutetium; MoR6O12, having a rhombohedral crystalline structure, wherein R is ythrium or a rare earth metal form holmium to lutetium; MO3(R2O3)1- 3 having a face-centred cubic crystalline structure, wherein M is Mo or W and R is a metal excluded in the first two formulae. The product is thermally stable and non-volatile at e.g. 1750 DEG C., and may be used as a protective coating for Mo or W, or, dispersed in a matrix of, e.g. stainless steel, in control rods for nuclear reactors (see Division G6).
GB41477/63A 1962-11-15 1963-10-21 Thermally stable mixed oxides containing tungsten or molybdenum Expired GB1005993A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US23806162A 1962-11-15 1962-11-15

Publications (1)

Publication Number Publication Date
GB1005993A true GB1005993A (en) 1965-09-29

Family

ID=22896339

Family Applications (1)

Application Number Title Priority Date Filing Date
GB41477/63A Expired GB1005993A (en) 1962-11-15 1963-10-21 Thermally stable mixed oxides containing tungsten or molybdenum

Country Status (3)

Country Link
BE (1) BE639846A (en)
GB (1) GB1005993A (en)
NL (1) NL300384A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2830529A1 (en) * 2001-10-10 2003-04-11 Rhodia Elect & Catalysis New rare earth metal tungstates useful as ultraviolet protection agents in plastic, paint, glass, textile or cosmetic products

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2830529A1 (en) * 2001-10-10 2003-04-11 Rhodia Elect & Catalysis New rare earth metal tungstates useful as ultraviolet protection agents in plastic, paint, glass, textile or cosmetic products

Also Published As

Publication number Publication date
NL300384A (en)
BE639846A (en)

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