METHOD FOR FABRICATION OF FULLY CERAMIC MICROENCAPSULATED NUCLEAR FUEL
    2.
    发明申请
    METHOD FOR FABRICATION OF FULLY CERAMIC MICROENCAPSULATED NUCLEAR FUEL 审中-公开
    全陶瓷微核燃料燃烧方法

    公开(公告)号:US20170025192A1

    公开(公告)日:2017-01-26

    申请号:US15218245

    申请日:2016-07-25

    发明人: Lance Lewis SNEAD

    摘要: Currently, the commercial fuel of choice, UO2-zircaloy, is economical due to an established and simple fabrication process. However, the alternatives to the UO2-zircaloy that may improve on system safety are sought. The fully ceramic microencapsulated (FCM) fuel system that is potentially inherently safe fuel and is an improvement on the UO2-zircaloy system is prohibitively expensive because of the known methods to produce it. Disclosed herein is a new production route and fixturing that produces identical or superior FCM fuel consistent with mass production by providing a plurality of tristructural-isotropic fuel particles; mixing the plurality of tristructural-isotropic fuel particles with ceramic powder to form a mixture; placing the mixture in a die; and applying a current to the die so as to sinter the mixture by direct current sintering into a fuel element.

    摘要翻译: 目前,由于建立和简单的制造工艺,选择的商业燃料UO2-ZrO2O是经济的。 然而,寻求可能改善系统安全性的替代氧化锆氧化锆。 具有潜在固有安全性的燃料的完全陶瓷微胶囊化(FCM)燃料系统是由于已知的生产方法而非常昂贵的,因为其对氧化锆氧化锆氧化锆系统的改进是昂贵的。 本文公开了一种新的生产路线和夹具,其通过提供多个三组分各向同性燃料颗粒而产生与大量生产一致的相同或优异的FCM燃料; 将多个三组分各向同性燃料颗粒与陶瓷粉末混合以形成混合物; 将混合物置于模具中; 以及向所述管芯施加电流,以通过直接烧结将所述混合物烧结成燃料元件。

    ULTRAHARD NANOTWINNED BORON NITRIDE BULK MATERIALS AND SYNTHETIC METHOD THEREOF
    5.
    发明申请
    ULTRAHARD NANOTWINNED BORON NITRIDE BULK MATERIALS AND SYNTHETIC METHOD THEREOF 有权
    超声波NONOTWINNED BORON NITRIDE BULK材料及其合成方法

    公开(公告)号:US20150158727A1

    公开(公告)日:2015-06-11

    申请号:US14407017

    申请日:2013-08-02

    IPC分类号: C01B21/064 B01J3/06

    摘要: The invention relates to an ultrahard nanotwinned boron nitride bulk material and synthetic method thereof. Particularly, the invention discloses a nanocrystalline cubic boron nitride bulk material containing high density of twins and synthetic method thereof, in which a nanotwinned boron nitride bulk are synthesized from nanospherical boron nitride particles (preferably with a size of 5-70 nm) with onion-like structure as raw materials by using high temperature and high pressure synthesis. As compared with the prior arts, the nanotwinned boron nitride bulk obtained according to the invention has a much higher hardness than that of a normal cubic boron nitride single crystal. The nanotwinned boron nitride bulk has great prospects in applications, such as precision and ultra-precision machining, abrasives, drawing dies, and special optics as well as other fields.

    摘要翻译: 本发明涉及一种超硬纳米结晶氮化硼体材料及其合成方法。 特别地,本发明公开了一种含有高密度双胞胎的纳米晶体立方氮化硼体材料及其合成方法,其中由纳米球形氮化硼体系由纳米球形氮化硼颗粒(优选尺寸为5-70nm)与洋葱 - 通过使用高温高压合成作为原料。 与现有技术相比,根据本发明获得的纳米结晶氮化硼体积具有比正常立方氮化硼单晶高得多的硬度。 纳米结晶氮化硼体积在精密和超精密加工,磨料,拉丝模,特殊光学以及其他领域的应用前景广阔。