METHOD OF PRODUCTION OF EDGE PROTECTION STRIPS OF CERAMIC MATERIAL

    公开(公告)号:US20180237349A1

    公开(公告)日:2018-08-23

    申请号:US15710494

    申请日:2017-09-20

    发明人: Giuseppe LUTTI

    IPC分类号: C04B41/45

    摘要: A method of production of edge protection strips (10) of ceramic material, includes the steps of: arranging a sheet-like article (20) of ceramic material elongated along a longitudinal axis (A) and provided with an exposed surface (S); incising the exposed surface (S) along two distinct incision planes, parallel to each other, orthogonal to the exposed surface (S) and each intersecting the exposed surface (S) along an incision line (I) parallel to the longitudinal axis (A); cutting the article (20) along two cutting planes each intersecting an incision plane along a cutting line (C) parallel to the incision lines (I) and mutually incident in an intersection line (X) included in the thickness of the article (20); and separating a substantially prismatic edge protection strip (10) from the article (20) with a first portion (S1) of exposed surface (S) internal to the incision lines (I).

    CMC COMBUSTOR SHELL WITH INTEGRAL CHUTES
    6.
    发明申请
    CMC COMBUSTOR SHELL WITH INTEGRAL CHUTES 审中-公开
    CMC COMBUSTOR SHELL带有一体化套管

    公开(公告)号:US20170059159A1

    公开(公告)日:2017-03-02

    申请号:US14834605

    申请日:2015-08-25

    摘要: A combustion assembly for a gas turbine engine may be provided. The combustion assembly may include a ceramic matrix composite combustor shell, which may include a chamber defined by a wall of the ceramic matrix composite combustor shell, and the ceramic matrix composite combustor shell may include a ceramic matrix composite chute integral with the ceramic matrix composite combustor shell. The ceramic matrix composite chute may extend towards a midline of the chamber. A method for fabricating a ceramic matrix composite chute may be provided. At least one chute may be woven in three dimensions into a ceramic preform. A layup tool may be inserted into the chute. The chute may be enlarged with the layup tool. The ceramic preform may be formed into a ceramic matrix composite body, which includes a combustor shell and the chute.

    摘要翻译: 可以提供用于燃气涡轮发动机的燃烧组件。 燃烧组件可以包括陶瓷基体复合燃烧器壳体,其可以包括由陶瓷基体复合燃烧器壳体的壁限定的腔室,并且陶瓷基体复合燃烧器壳体可以包括与陶瓷基体复合燃烧器一体的陶瓷基体复合滑槽 贝壳。 陶瓷基质复合滑槽可以朝着腔室的中线延伸。 可以提供一种制造陶瓷基质复合滑槽的方法。 至少一个滑槽可以三维地编织成陶瓷预制件。 上料工具可以插入滑槽。 滑槽可以用铺设工具放大。 陶瓷预制件可以形成为陶瓷基体复合体,其包括燃烧器壳体和滑槽。

    Method of making shaped ceramic composites with the use of a barrier
    9.
    发明授权
    Method of making shaped ceramic composites with the use of a barrier 失效
    使用屏障制造成型陶瓷复合材料的方法

    公开(公告)号:US4923832A

    公开(公告)日:1990-05-08

    申请号:US861024

    申请日:1986-05-08

    摘要: In the present invention, there is provided a method for producing a self-supporting ceramic or ceramic composite body by the oxidation of a parent metal to form a polycrystalline ceramic material comprising the oxidation reaction product of said parent metal with an oxidant, including a vapor-phase oxidant, and optionally one or more metallic constituents dispersed throughout the polycrystalline ceramic material. The method comprises the steps of providing at least a portion of said parent metal with a barrier means at least partially spaced from said parent metal for establishing at least one surface of the ceramic body, and heating said parent metal to a temperature above its melting point but below the melting point of the oxidation reaction product to form a body of molten metal. At that temperature, the molten metal is reacted with the oxidant, thus forming the oxidation reaction product. At least a portion of the oxidation reaction product is maintained in contact with and between the molten metal and oxidant to transport the molten metal through the oxidation reaction product toward the barrier means and into contact with fresh oxidant so that the oxidation reaction product continues to form at and interface between the oxidant and previously formed oxidation reaction product. The reaction is continued until the oxidation reaction product contacts the barrier means to produce a ceramic body having the surface established by the barrier means. A shaped ceramic composite is formed by superimposing a barrier means either a loose mass of filler material such as a preform to, and infiltrating the mass of filler or preform with the polycrystalline ceramic matrix, which grows until it contacts the barrier means.

    摘要翻译: 在本发明中,提供了一种通过母体金属的氧化制造自支撑陶瓷或陶瓷复合体的方法,以形成多晶陶瓷材料,该多晶陶瓷材料包括所述母体金属的氧化反应产物与氧化剂,包括蒸汽 相氧化剂和任选的一种或多种分散在整个多晶陶瓷材料中的金属成分。 该方法包括以下步骤:使所述母体金属的至少一部分具有与所述母体金属至少部分间隔开的阻挡装置,用于建立陶瓷体的至少一个表面,并将所述母体金属加热到高于其熔点的温度 但低于氧化反应产物的熔点以形成熔融金属体。 在该温度下,熔融金属与氧化剂反应,形成氧化反应产物。 氧化反应产物的至少一部分保持与熔融金属和氧化剂接触并且在熔融金属和氧化剂之间传输熔融金属通过氧化反应产物朝向阻挡装置并与新鲜的氧化剂接触,使得氧化反应产物继续形成 在氧化剂和预先形成的氧化反应产物之间和界面。 反应继续进行,直到氧化反应产物与阻挡装置接触以产生具有通过阻挡装置建立的表面的陶瓷体。 成形陶瓷复合材料通过将阻挡装置或诸如预成型体之类的填充材料的松散材料叠加在多孔陶瓷基体上并将多孔陶瓷基体浸入填料或预成型体中而形成,该多晶陶瓷基体生长直到与阻挡装置接触。