NANOCELLULAR SEAL MATERIALS
    5.
    发明申请
    NANOCELLULAR SEAL MATERIALS 审中-公开
    纳米密封材料

    公开(公告)号:WO2014025573A1

    公开(公告)日:2014-02-13

    申请号:PCT/US2013/052707

    申请日:2013-07-30

    CPC classification number: F16J15/102 F16J15/14

    Abstract: A high temperature nanocellular foam seal material has pores, interconnecting ligaments, and nodes where three or more ligaments intersect. The ligament cross-section thickness is less than 200 microns and the distance between nodes is less than 1000 microns. The material's high compliance and elastic springback can be tailored to an application by varying the foam architecture. Metal, intermetallic, and ceramic nanocellular foams can be used as seal materials in the hot gas path of a turbine engine.

    Abstract translation: 高温纳米细胞泡沫密封材料具有孔,互连韧带和三个或更多个韧带相交的节点。 韧带横截面厚度小于200微米,节点之间的距离小于1000微米。 材料的高柔顺性和弹性回弹可以通过改变泡沫结构而适用于应用。 金属,金属间和陶瓷纳米蜂窝泡沫可用作涡轮发动机的热气体路径中的密封材料。

    SURFACE TREATMENT FOR AQUEOUS SLURRY-BASED ENVIRONMENTAL BARRIER COATING

    公开(公告)号:EP3611148A1

    公开(公告)日:2020-02-19

    申请号:EP19192149.3

    申请日:2019-08-16

    Abstract: A method for coating a ceramic matrix composite substrate (12) with an environmental barrier coating (18) includes the steps of: treating a surface (20) of a ceramic matrix composite substrate (12) to adjust wettability of the surface (20); and applying an aqueous slurry-based environmental barrier coating (18) to the surface (20). The treating step can be a plasma treatment to remove organic contaminants, and can also be a treatment to modify oxidative state of the surface (20). The treatment can produce a surface (20) for treatment that is hydrophilic and has a contact angle with aqueous-slurry coating materials of less than 40 degrees.

    ACCELERATED CVI DENSIFICATION OF CMC THROUGH INFILTRATION

    公开(公告)号:EP3650424A1

    公开(公告)日:2020-05-13

    申请号:EP19208329.3

    申请日:2019-11-11

    Abstract: A process for densification of a ceramic matrix composite comprises forming a reinforcing ceramic continuous fiber stack (10) having a central zone (36) bounded by an outer zone (30) adjacent; locating first particles within the central zone (36); coating the first particles and the ceramic fibers with silicon carbide through chemical vapor infiltration; locating second particles within the outer zone (30); coating the second particles and the ceramic fibers with silicon carbide through chemical vapor infiltration; forming the stack (10) into a predetermined three dimensional shape; and densifying the stack (10) .

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