Processing

Please wait...

Settings

Settings

Goto Application

1. WO2017026685 - FULLY CERAMIC CAPSULATED NUCLEAR FUEL COMPOSITION CONTAINING THREE-LAYER-STRUCTURED ISOTROPIC NUCLEAR FUEL PARTICLES WITH COATING LAYER HAVING HIGHER SHRINKAGE THAN MATRIX, MATERIAL THEREOF AND METHOD FOR PREPARING SAME

Publication Number WO/2017/026685
Publication Date 16.02.2017
International Application No. PCT/KR2016/007848
International Filing Date 19.07.2016
IPC
G21C 3/62 2006.01
GPHYSICS
21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
CNUCLEAR REACTORS
3Reactor fuel elements or their assemblies; Selection of substances for use as reactor fuel elements
42Selection of substances for use as reactor fuel
58Solid reactor fuel
62Ceramic fuel
G21C 3/02 2006.01
GPHYSICS
21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
CNUCLEAR REACTORS
3Reactor fuel elements or their assemblies; Selection of substances for use as reactor fuel elements
02Fuel elements
CPC
C04B 2235/3208
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
2235Aspects relating to ceramic starting mixtures or sintered ceramic products
02Composition of constituents of the starting material or of secondary phases of the final product
30Constituents and secondary phases not being of a fibrous nature
32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
3205Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
3208Calcium oxide or oxide-forming salts thereof, e.g. lime
C04B 2235/3217
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
2235Aspects relating to ceramic starting mixtures or sintered ceramic products
02Composition of constituents of the starting material or of secondary phases of the final product
30Constituents and secondary phases not being of a fibrous nature
32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
3217Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
C04B 2235/3225
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
2235Aspects relating to ceramic starting mixtures or sintered ceramic products
02Composition of constituents of the starting material or of secondary phases of the final product
30Constituents and secondary phases not being of a fibrous nature
32Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
3224Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
3225Yttrium oxide or oxide-forming salts thereof
C04B 2235/383
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
2235Aspects relating to ceramic starting mixtures or sintered ceramic products
02Composition of constituents of the starting material or of secondary phases of the final product
30Constituents and secondary phases not being of a fibrous nature
38Non-oxide ceramic constituents or additives
3817Carbides
3826Silicon carbides
383Alpha silicon carbide
C04B 2235/3834
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
2235Aspects relating to ceramic starting mixtures or sintered ceramic products
02Composition of constituents of the starting material or of secondary phases of the final product
30Constituents and secondary phases not being of a fibrous nature
38Non-oxide ceramic constituents or additives
3817Carbides
3826Silicon carbides
3834Beta silicon carbide
C04B 2235/48
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
2235Aspects relating to ceramic starting mixtures or sintered ceramic products
02Composition of constituents of the starting material or of secondary phases of the final product
30Constituents and secondary phases not being of a fibrous nature
48Organic compounds becoming part of a ceramic after heat treatment, e.g. carbonising phenol resins
Applicants
  • 서울시립대학교 산학협력단 UNIVERSITY OF SEOUL INDUSTRY COOPERATION FOUNDATION [KR]/[KR]
  • 한전원자력연료 주식회사 KEPCO NUCLEAR FUEL CO., LTD. [KR]/[KR]
Inventors
  • 김영욱 KIM, Young Wook
  • 엄정혜 EOM, Jung Hye
  • 서유광 SEO, Yu Kwang
  • 이승재 LEE, Seung Jae
Agents
  • 특허법인 수 SU INTELLECTUAL PROPERTY
Priority Data
10-2015-011188807.08.2015KR
Publication Language Korean (KO)
Filing Language Korean (KO)
Designated States
Title
(EN) FULLY CERAMIC CAPSULATED NUCLEAR FUEL COMPOSITION CONTAINING THREE-LAYER-STRUCTURED ISOTROPIC NUCLEAR FUEL PARTICLES WITH COATING LAYER HAVING HIGHER SHRINKAGE THAN MATRIX, MATERIAL THEREOF AND METHOD FOR PREPARING SAME
(FR) COMPOSITION DE COMBUSTIBLE NUCLÉAIRE ENCAPSULÉ ENTIÈREMENT CÉRAMIQUE CONTENANT DES PARTICULES DE COMBUSTIBLE NUCLÉAIRE ISOTROPES STRUCTURÉES EN TROIS COUCHES AVEC UNE COUCHE DE REVÊTEMENT PRÉSENTANT UN INDICE DE RETRAIT SUPÉRIEUR À CELUI DE LA MATRICE, MATÉRIAU DE CELLE-CI ET SON PROCÉDÉ DE PRÉPARATION
(KO) 기지상보다 수축율이 큰 코팅층을 갖는 삼층구조 등방성 핵연료 입자를 포함하는 완전 세라믹 캡슐형 핵연료 조성물, 소재 및 그 제조방법
Abstract
(EN)
The present invention relates to a method for preparing a fully ceramic capsulated nuclear fuel material containing three-layer-structured isotropic nuclear fuel particles coated with a ceramic having a composition which has a higher shrinkage than a matrix in order to prevent cracking of ceramic nuclear fuel, wherein the three-layer-structured nuclear fuel particles before coating is included in the range of between 5 and 40 fractions by volume based on after sintering. More specifically, the present invention provides a composition for preparing a fully ceramic capsulated nuclear fuel containing three-layer-structured isotropic nuclear fuel particles coated with the substance which includes, as a main ingredient, a silicon carbide derived from a precursor of the silicon carbide wherein a condition of ΔLC >ΔLm at normal pressure sintering is created, where the sintering shrinkage of the coating layer of the three-layer-structured isotropic nuclear fuel particles is ΔLC and the sintering shrinkage of the silicon carbide matrix is ΔLm; material produced therefrom; and a method for manufacturing the material. The residual porosity of the fully ceramic capsulated nuclear fuel material is 4% or less.
(FR)
La présente invention concerne un procédé de préparation d'un matériau de combustible nucléaire encapsulé entièrement céramique contenant des particules de combustible nucléaire isotropes structurées en trois couches revêtues d'une céramique possédant une composition qui présente un indice de retrait supérieur à celui d'une matrice de manière à empêcher la fissuration du combustible nucléaire céramique, où, avant le revêtement, les particules de combustible nucléaire structurées en trois couches sont dans la plage allant de 5 à 40 fractions en volume sur la base de l'après frittage. Plus spécifiquement, la présente invention concerne une composition pour la préparation d'un combustible nucléaire encapsulé entièrement céramique contenant des particules de combustible nucléaire isotropes structurées en trois couches revêtues de la substance qui comprend, en tant que constituant principal, un carbure de silicium dérivé d'un précurseur du carbure de silicium dans lequel une condition ΔLC> ΔLm de frittage à une pression normale est créée, où l'indice de retrait au frittage de la couche de revêtement des particules de combustible nucléaire isotropes structurées en trois couches est ΔLC et l'indice de retrait au frittage de la matrice de carbure de silicium est ΔLm. L'invention concerne en outre un matériau produit à partir de celle-ci, et un procédé de fabrication du matériau. La porosité résiduelle du matériau combustible nucléaire encapsulé entièrement céramique est inférieure ou égale à 4 %.
(KO)
본 발명은 세라믹 핵연료의 균열을 방지하기 위해 기지상보다 더 많이 수축하는 조성의 세라믹이 코팅된 삼층구조 등방성 핵연료 입자를 포함하되, 코팅전의 삼층구조 핵연료 입자가 소결후를 기준으로 5 ~ 40 부피 분율 범위에서 포함되도록 하는 완전 세라믹 캡슐형 핵연료 소재의 제조방법에 관한 것으로서, 보다 상세하게는 상기 삼층구조 등방성 핵연료 입자의 코팅층의 소결 수축율을 ΔLC 라 하고, 상기 탄화규소 기지상의 소결 수축율을 ΔLm으로 하였을 때, 상압소결시 ΔLC >ΔLm 인 조건이 만들어지는 것을 특징으로 하는 탄화규소 전구체로 부터 유도된 탄화규소를 주성분으로 하는 물질이 코팅된 삼층구조 등방성 핵연료 입자를 포함하는 완전 세라믹 캡슐형 핵연료 제조용 조성물, 이로부터 제조되는 소재 및 소재의 제조방법을 제공한다.상기 완전 세라믹 캡슐형 핵연료 소재의 잔존 기공율은 4% 이하인 것을 특징으로 한다.
Also published as
Latest bibliographic data on file with the International Bureau