GB1430144A - Ceramic materials and methods of producing such materials - Google Patents
Ceramic materials and methods of producing such materialsInfo
- Publication number
- GB1430144A GB1430144A GB1915973A GB1915973A GB1430144A GB 1430144 A GB1430144 A GB 1430144A GB 1915973 A GB1915973 A GB 1915973A GB 1915973 A GB1915973 A GB 1915973A GB 1430144 A GB1430144 A GB 1430144A
- Authority
- GB
- United Kingdom
- Prior art keywords
- powder
- temperature
- onset
- shrinkage
- ceramic
- 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
Classifications
-
- 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
- C04B33/00—Clay-wares
- C04B33/32—Burning methods
- C04B33/326—Burning methods under pressure
-
- 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
- C04B33/00—Clay-wares
- C04B33/32—Burning methods
-
- 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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
-
- 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
- G21C3/623—Oxide fuels
-
- 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)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Dispersion Chemistry (AREA)
- Plasma & Fusion (AREA)
- Manufacturing & Machinery (AREA)
- High Energy & Nuclear Physics (AREA)
- General Engineering & Computer Science (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Powder Metallurgy (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
Abstract
1430144 Ceramic material BABCOCK & WILCOX CO 19 April 1973 [12 May 1972] 19159/73 Heading C1A A ceramic material comprises grains of sintered aluminium oxide having grains with a size distribution observed on a fracture surface with a scanning electron microscope at 10,000 magnifications as follows: less than 0À3 Á = 0%, between 0À3 and 0À5 Á = 25%, between 0À3 and 0À7 Á = 54%, between 0À3 and 0À9 Á = 80% and between 0À3 and 1À5 Á = 100%. A suitable method of converting a sinterable powder into a fine grain ceramic metal oxide of the above type comprises a first step of heating the powder to a temperature that produces an onset of powder shrinkage, a step of applying a maximum process physical pressure to the powder with the onset of shrinkage, a step of raising the temperature of the powder, with the onset of shrinkage, at a lower rate than the first heating step, to a temperature of more than 800 C. and holding the pressure and attained temperature for more than two minutes. It is preferred to heat the powder in the first heating step to more than 400 C. at a rate of at least 400 C. per minute and to use a maximum hot process pressure of 2000-6000 lbs./sq. inch. The preparation of Al 2 O 3 and UO 2 ceramic materials are exemplified.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US25268872A | 1972-05-12 | 1972-05-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1430144A true GB1430144A (en) | 1976-03-31 |
Family
ID=22957096
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1915973A Expired GB1430144A (en) | 1972-05-12 | 1973-04-19 | Ceramic materials and methods of producing such materials |
Country Status (19)
Country | Link |
---|---|
JP (2) | JPS5230002B2 (en) |
AU (1) | AU473154B2 (en) |
BE (1) | BE799419A (en) |
BR (1) | BR7303466D0 (en) |
CA (1) | CA1032562A (en) |
CH (2) | CH584170A5 (en) |
DE (1) | DE2322983A1 (en) |
ES (1) | ES414686A1 (en) |
FR (1) | FR2184659B1 (en) |
GB (1) | GB1430144A (en) |
IE (1) | IE37571B1 (en) |
IL (1) | IL42147A (en) |
IN (1) | IN140093B (en) |
IT (1) | IT1055528B (en) |
LU (1) | LU67578A1 (en) |
NL (1) | NL7305510A (en) |
NO (1) | NO136971C (en) |
SE (1) | SE409988B (en) |
ZA (1) | ZA732984B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5941534U (en) * | 1982-09-08 | 1984-03-17 | ゼオン化成株式会社 | soundproof laminate |
JP2867301B2 (en) * | 1991-02-28 | 1999-03-08 | 川崎製鉄株式会社 | Grinding wheel for billet |
-
1973
- 1973-04-19 GB GB1915973A patent/GB1430144A/en not_active Expired
- 1973-04-19 NL NL7305510A patent/NL7305510A/xx not_active Application Discontinuation
- 1973-04-24 CA CA170,052A patent/CA1032562A/en not_active Expired
- 1973-04-27 IE IE668/73A patent/IE37571B1/en unknown
- 1973-04-30 IL IL42147A patent/IL42147A/en unknown
- 1973-05-02 IN IN1027/CAL/73A patent/IN140093B/en unknown
- 1973-05-02 AU AU55096/73A patent/AU473154B2/en not_active Expired
- 1973-05-02 ZA ZA732984A patent/ZA732984B/en unknown
- 1973-05-08 DE DE2322983A patent/DE2322983A1/en active Pending
- 1973-05-09 FR FR7316645A patent/FR2184659B1/fr not_active Expired
- 1973-05-10 SE SE7306579A patent/SE409988B/en unknown
- 1973-05-10 LU LU67578A patent/LU67578A1/xx unknown
- 1973-05-11 CH CH675373A patent/CH584170A5/xx not_active IP Right Cessation
- 1973-05-11 CH CH1662875A patent/CH587199A5/xx not_active IP Right Cessation
- 1973-05-11 JP JP48051786A patent/JPS5230002B2/ja not_active Expired
- 1973-05-11 ES ES414686A patent/ES414686A1/en not_active Expired
- 1973-05-11 NO NO1967/73A patent/NO136971C/en unknown
- 1973-05-11 BE BE131017A patent/BE799419A/en not_active IP Right Cessation
- 1973-05-11 BR BR3466/73A patent/BR7303466D0/en unknown
- 1973-05-16 IT IT68411/73A patent/IT1055528B/en active
- 1973-08-10 JP JP8938173A patent/JPS545403B2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
IE37571B1 (en) | 1977-08-17 |
ES414686A1 (en) | 1976-06-16 |
NL7305510A (en) | 1973-11-14 |
NO136971C (en) | 1977-12-07 |
JPS545403B2 (en) | 1979-03-16 |
AU473154B2 (en) | 1976-06-17 |
SE409988B (en) | 1979-09-17 |
JPS50151907A (en) | 1975-12-06 |
FR2184659B1 (en) | 1976-03-19 |
DE2322983A1 (en) | 1974-07-04 |
IE37571L (en) | 1973-11-12 |
IN140093B (en) | 1976-09-11 |
IL42147A (en) | 1977-02-28 |
AU5509673A (en) | 1974-11-07 |
BR7303466D0 (en) | 1974-07-25 |
CH587199A5 (en) | 1977-04-29 |
BE799419A (en) | 1973-11-12 |
CH584170A5 (en) | 1977-01-31 |
IL42147A0 (en) | 1973-06-29 |
FR2184659A1 (en) | 1973-12-28 |
LU67578A1 (en) | 1973-07-26 |
IT1055528B (en) | 1982-01-11 |
JPS5230002B2 (en) | 1977-08-05 |
CA1032562A (en) | 1978-06-06 |
JPS4961212A (en) | 1974-06-13 |
NO136971B (en) | 1977-08-29 |
ZA732984B (en) | 1974-08-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |