Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Zirconium carbide multiphase ceramic inert matrix dispersion fuel pellet and preparation method thereof
The invention discloses a zirconium carbide multiphase ceramic inert matrix dispersion fuel pellet and a preparation method thereof.The preparation method comprises the steps that S1, ZrC powder, second-phase powder, a sintering aid and a dispersing agent are mixed to form a mixed material; s2, mixing one part of the mixed material with fuel pellets and a solvent to obtain the fuel pellets wrapped with the mixed material; s3, the fuel pellets wrapped with the mixed material serve as fuel area powder, the other part of the mixed material serves as fuel-free area powder, and a pellet blank is formed through pressing; and S4, sintering the pellet blank to obtain the zirconium carbide multiphase ceramic inert matrix dispersion fuel pellet. According to the preparation method of the zirconium carbide multiphase ceramic inert matrix dispersion fuel pellet, the second-phase powder is added into the matrix to serve as a buffer material between ZrC and the fuel pellets, the bonding degree of the interface of the matrix and the fuel pellets is improved, the internal stress of the fuel pellet is improved, and the crack defect in the matrix is reduced; the mechanical property and the high-temperature oxidation resistance of the fuel pellet are improved.
本发明公开了一种碳化锆复相陶瓷惰性基体弥散燃料芯块及其制备方法，制备方法包括：S1、将ZrC粉体、第二相粉体、烧结助剂和分散剂混合，形成混料；S2、将一份混料与燃料小球、溶剂进行混合，得到包裹有混料的燃料小球；S3、将包裹有混料的燃料小球作为燃料区粉体，将另一份混料作为无燃料区粉体，压制形成芯块坯体；S4、将芯块坯体进行烧结，得到碳化锆复相陶瓷惰性基体弥散燃料芯块。本发明的碳化锆复相陶瓷惰性基体弥散燃料芯块的制备方法，在基体中加入第二相粉体，作为ZrC和燃料小球之间的缓冲材料，提高基体和燃料小球界面的结合度，改善燃料芯块的内应力，降低基体内部的裂纹缺陷，改善燃料芯块的力学性能和高温抗氧化性能。
Zirconium carbide multiphase ceramic inert matrix dispersion fuel pellet and preparation method thereof
The invention discloses a zirconium carbide multiphase ceramic inert matrix dispersion fuel pellet and a preparation method thereof.The preparation method comprises the steps that S1, ZrC powder, second-phase powder, a sintering aid and a dispersing agent are mixed to form a mixed material; s2, mixing one part of the mixed material with fuel pellets and a solvent to obtain the fuel pellets wrapped with the mixed material; s3, the fuel pellets wrapped with the mixed material serve as fuel area powder, the other part of the mixed material serves as fuel-free area powder, and a pellet blank is formed through pressing; and S4, sintering the pellet blank to obtain the zirconium carbide multiphase ceramic inert matrix dispersion fuel pellet. According to the preparation method of the zirconium carbide multiphase ceramic inert matrix dispersion fuel pellet, the second-phase powder is added into the matrix to serve as a buffer material between ZrC and the fuel pellets, the bonding degree of the interface of the matrix and the fuel pellets is improved, the internal stress of the fuel pellet is improved, and the crack defect in the matrix is reduced; the mechanical property and the high-temperature oxidation resistance of the fuel pellet are improved.
本发明公开了一种碳化锆复相陶瓷惰性基体弥散燃料芯块及其制备方法，制备方法包括：S1、将ZrC粉体、第二相粉体、烧结助剂和分散剂混合，形成混料；S2、将一份混料与燃料小球、溶剂进行混合，得到包裹有混料的燃料小球；S3、将包裹有混料的燃料小球作为燃料区粉体，将另一份混料作为无燃料区粉体，压制形成芯块坯体；S4、将芯块坯体进行烧结，得到碳化锆复相陶瓷惰性基体弥散燃料芯块。本发明的碳化锆复相陶瓷惰性基体弥散燃料芯块的制备方法，在基体中加入第二相粉体，作为ZrC和燃料小球之间的缓冲材料，提高基体和燃料小球界面的结合度，改善燃料芯块的内应力，降低基体内部的裂纹缺陷，改善燃料芯块的力学性能和高温抗氧化性能。
Zirconium carbide multiphase ceramic inert matrix dispersion fuel pellet and preparation method thereof
碳化锆复相陶瓷惰性基体弥散燃料芯块及其制备方法
REN QISEN (Autor:in) / WU LIXIANG (Autor:in) / LIAO YEHONG (Autor:in) / XUE JIAXIANG (Autor:in) / XIE YIRAN (Autor:in) / LIU YANG (Autor:in) / YAN JUN (Autor:in)
09.01.2024
Patent
Elektronische Ressource
Chinesisch
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