GB1258275A - - Google Patents
Info
- Publication number
- GB1258275A GB1258275A GB1258275DA GB1258275A GB 1258275 A GB1258275 A GB 1258275A GB 1258275D A GB1258275D A GB 1258275DA GB 1258275 A GB1258275 A GB 1258275A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carbon
- acetylene
- helium
- propane
- mixture
- 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
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 8
- 229910052799 carbon Inorganic materials 0.000 abstract 7
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 abstract 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract 4
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 abstract 3
- 238000000576 coating method Methods 0.000 abstract 3
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 abstract 3
- 239000001307 helium Substances 0.000 abstract 3
- 229910052734 helium Inorganic materials 0.000 abstract 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 abstract 3
- 239000000203 mixture Substances 0.000 abstract 3
- 239000001294 propane Substances 0.000 abstract 3
- 239000011248 coating agent Substances 0.000 abstract 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 1
- 229910052770 Uranium Inorganic materials 0.000 abstract 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 abstract 1
- GFRMDONOCHESDE-UHFFFAOYSA-N [Th].[U] Chemical compound [Th].[U] GFRMDONOCHESDE-UHFFFAOYSA-N 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000000354 decomposition reaction Methods 0.000 abstract 1
- 229910002804 graphite Inorganic materials 0.000 abstract 1
- 239000010439 graphite Substances 0.000 abstract 1
- 229930195733 hydrocarbon Natural products 0.000 abstract 1
- 150000002430 hydrocarbons Chemical group 0.000 abstract 1
- 150000001247 metal acetylides Chemical class 0.000 abstract 1
- 229910052758 niobium Inorganic materials 0.000 abstract 1
- 239000010955 niobium Substances 0.000 abstract 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 abstract 1
- 239000003758 nuclear fuel Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 239000002296 pyrolytic carbon Substances 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 abstract 1
- 229910052726 zirconium Inorganic materials 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
- G21C3/42—Selection of substances for use as reactor fuel
- G21C3/58—Solid reactor fuel Pellets made of fissile material
- G21C3/62—Ceramic fuel
- G21C3/626—Coated fuel particles
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5001—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with carbon or carbonisable materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00862—Uses not provided for elsewhere in C04B2111/00 for nuclear applications, e.g. ray-absorbing concrete
-
- 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)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Carbon And Carbon Compounds (AREA)
- Chemical Vapour Deposition (AREA)
Abstract
1,258,275. Coating with carbon. GULF OIL CORP. Jan. 31, 1969 [Jan. 18 1968], No. 1907/69. Heading C7F. [Also in Division C1] Articles, e.g. uranium dicarbide or thoriumuranium dicarbide nuclear fuel particles are coated with low and high density pyrolytic carbon layers by decomposition of hydrocarbons. The high density carbon has a B.A.F. of not more than 1À2, and a density above 50% of maximum theoretical. The H.D. carbon is deposited using propane or methane or mixture thereof at a temperature below 1400C. (1250 to 1400). The L.D. carbon is deposited below 1400C. using acetylene or at high temperatures 1800 to 2200C. using propane or methane or a mixture thereof. In a specific example, thorium-uranium dicarbide spheroids diameter 150 to 250 microns in a graphite reaction tube heated to 1300C. are subjected to an upward flow of helium to form a fluidized bed. Acetylene is then substituted for the helium at a flow rate of 10, 000 c.c. per minute to form a L.D. carbon coating. The acetylene is then replaced by a mixture of propane and helium at a total flow rate of 10,000 c.c. per minute to deposit the H.D. layer of carbon. Additional coatings of the carbides of silicon, zirconium, and niobium may be applied with the carbon.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US69872568A | 1968-01-18 | 1968-01-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1258275A true GB1258275A (en) | 1971-12-30 |
Family
ID=24806416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1258275D Expired GB1258275A (en) | 1968-01-18 | 1969-01-13 |
Country Status (7)
| Country | Link |
|---|---|
| AT (1) | AT330904B (en) |
| BE (1) | BE727050A (en) |
| CH (1) | CH541631A (en) |
| FR (1) | FR2000378A1 (en) |
| GB (1) | GB1258275A (en) |
| NL (1) | NL6900812A (en) |
| SE (1) | SE343048B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4963758A (en) * | 1988-10-17 | 1990-10-16 | General Atomics | Method of making compacts containing precise amounts of nuclear fuel |
-
1969
- 1969-01-13 GB GB1258275D patent/GB1258275A/en not_active Expired
- 1969-01-17 NL NL6900812A patent/NL6900812A/xx unknown
- 1969-01-17 BE BE727050D patent/BE727050A/xx unknown
- 1969-01-17 FR FR6900720A patent/FR2000378A1/fr not_active Withdrawn
- 1969-01-17 AT AT50869*#A patent/AT330904B/en not_active IP Right Cessation
- 1969-01-17 CH CH67469A patent/CH541631A/en not_active IP Right Cessation
- 1969-01-17 SE SE614/69A patent/SE343048B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CH541631A (en) | 1973-09-15 |
| AT330904B (en) | 1976-07-26 |
| BE727050A (en) | 1969-07-01 |
| FR2000378A1 (en) | 1969-09-05 |
| DE1902344A1 (en) | 1969-08-07 |
| NL6900812A (en) | 1969-07-22 |
| ATA50869A (en) | 1975-10-15 |
| DE1902344B2 (en) | 1976-02-26 |
| SE343048B (en) | 1972-02-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |