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    Method for primary containment of cesium wastes
    1.
    发明授权
    Method for primary containment of cesium wastes 失效
    主要容纳铯废物的方法

    公开(公告)号：US4376792A

    公开(公告)日：1983-03-15

    申请号：US298969

    申请日：1981-09-03

    申请人： Peter Angelini ,  Walter J. Lackey ,  David P. Stinton ,  Raymond E. Blanco ,  Walter D. Bond ,  Wesley D. Arnold, Jr.

    发明人： Peter Angelini ,  Walter J. Lackey ,  David P. Stinton ,  Raymond E. Blanco ,  Walter D. Bond ,  Wesley D. Arnold, Jr.

    IPC分类号： G21F9/12 ,  G21F9/30 ,  G21C3/06

    CPC分类号： G21F9/302 ,  G21F9/12

    摘要： A method for producing a cesium-retentive waste form, characterized by a high degree of compositional stability and mechanical integrity, is provided by subjecting a cesium-loaded zeolite to heat under conditions suitable for stabilizing the zeolite and immobilizing the cesium, and coating said zeolite for sufficient duration within a suitable environment with at least one dense layer of pyrolytic carbon to seal therein said cesium to produce a final, cesium-bearing waste form. Typically, the zeolite is stabilized and the cesium immobilized in less than four hours by confinement within an air environment maintained at about 600.degree. C. Coatings are thereafter applied by confining the calcined zeolite within a coating environment comprising inert fluidizing and carbon donor gases maintained at 1,000.degree. C. for a suitable duration.

    摘要翻译： 通过使铯负载的沸石在适于稳定沸石和固定铯的条件下加热，并且将所述沸石涂覆在所述沸石上，从而提供特征在于高成分稳定性和机械完整性的铯保持性废物形式的方法 在合适的环境中具有足够的持续时间，其中具有至少一个致密层的热解碳以在其中密封所述铯以产生最终的含铯废物形式。 通常，沸石是稳定的，并且铯通过在保持在约600℃的空气环境中约束在少于4小时内固定。之后通过将煅烧沸石限制在包含惰性流化和碳供体气体的涂覆环境中来施加涂层 1000℃持续适宜的时间。

    Dispersion toughened ceramic composites and method for making same
    4.
    发明授权
    Dispersion toughened ceramic composites and method for making same 失效
    分散强化陶瓷复合材料及其制备方法

    公开(公告)号：US4598024A

    公开(公告)日：1986-07-01

    申请号：US655488

    申请日：1984-09-28

    申请人： David P. Stinton ,  Walter J. Lackey ,  Robert J. Lauf

    发明人： David P. Stinton ,  Walter J. Lackey ,  Robert J. Lauf

    IPC分类号： C04B41/50 ,  C04B41/87 ,  C23C16/30 ,  B32B9/04

    CPC分类号： C04B41/009 ,  C04B41/5071 ,  C04B41/87 ,  C23C16/30

    摘要： Ceramic composites exhibiting increased fracture toughness are produced by the simultaneous codeposition of silicon carbide and titanium disilicide by chemical vapor deposition. A mixture of hydrogen, methyltrichlorosilane and titanium tetrachloride is introduced into a furnace containing a substrate such as graphite or silicon carbide. The thermal decomposition of the methyltrichlorosilane provides a silicon carbide matrix phase and the decomposition of the titanium tetrachloride provides a uniformly dispersed second phase of the intermetallic titanium disilicide within the matrix phase. The fracture toughness of the ceramic composite is in the range of about 6.5 to 7.0 MPa.sqroot.m which represents a significant increase over that of silicon carbide.

    摘要翻译： 显示出增加的断裂韧性的陶瓷复合材料通过化学气相沉积同时共沉积碳化硅和二硅化钛而产生。 将氢，甲基三氯硅烷和四氯化钛的混合物引入含有诸如石墨或碳化硅的基材的炉中。 甲基三氯硅烷的热分解提供了碳化硅基体相，并且四氯化钛的分解在基质相内提供了金属间二硅化钛均匀分散的第二相。 陶瓷复合材料的断裂韧性在约6.5〜7.0MPa 2ROOT m的范围内，与碳化硅相比显着增加。

    Fluidized bed coating process with liquid reagent
    6.
    发明授权
    Fluidized bed coating process with liquid reagent 失效
    流化床涂层工艺用液体试剂

    公开(公告)号：US06187379B1

    公开(公告)日：2001-02-13

    申请号：US08835584

    申请日：1997-04-09

    申请人： Walter J. Lackey

    发明人： Walter J. Lackey

    IPC分类号： C23C1600

    CPC分类号： C23C16/442 ,  Y10S427/10 ,  Y10S427/101

    摘要： A preferred embodiment of a method for coating a substrate with a chemical compound uses a precursor liquid. This precursor liquid preferably serves as a reagent in the coating process and is housed in a reactor. Once the precursor liquid is placed in the reactor, the substrate is immersed in the precursor liquid. While the substrate is immersed in the precursor liquid, which may or may not contain solid particles, the liquid is fluidized by one or more possible methods: passing a gas through the liquid; recirculating the liquid; and stirring the liquid. In the preferred embodiment, inductive heating of the substrate is performed by an induction coil. The induction coil will be driven by a generator to emit a high frequency alternating current electromagnetic field such that only the substrate is directly heated. Heating the substrate in a fluidized bed will cause chemical vapor deposition or chemical vapor infiltration to occur and the desired chemical compound, or element, to be deposited on the substrate. The compound that coats the substrate may be either the vaporized precursor liquid, a gas injected into the reactor, or some combination of the two.

    摘要翻译： 用化学化合物涂覆底物的方法的优选实施方案使用前体液体。 该前体液体优选用作涂布过程中的试剂，并且容纳在反应器中。 一旦将前体液体放置在反应器中，将基底浸入前体液体中。 当衬底浸入可能含有或不含有固体颗粒的前体液体中时，液体通过一种或多种可能的方法流化：使气体通过液体; 使液体再循环; 并搅拌液体。 在优选实施例中，通过感应线圈进行衬底的感应加热。 感应线圈将由发电机驱动以发射高频交流电磁场，使得只有基板被直接加热。 在流化床中加热基底将导致化学气相沉积或化学气相渗透发生，并且期望的化合物或元素沉积在基底上。 涂覆基材的化合物可以是蒸发的前体液体，注入反应器的气体，也可以是两者的某种组合。