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    Two-layer barrier system using pyrochlores
    25.
    发明专利
    Two-layer barrier system using pyrochlores 未知

    公开(公告)号：GB2431932B

    公开(公告)日：2011-07-27

    申请号：GB0621956

    申请日：2006-11-03

    Applicant: SIEMENS AG

    Inventor： SCHUMANN ECKART ,  SUBRAMANIAN RAMESH

    IPC: C23C28/00 ,  F01D5/28

    Abstract: The thermal barrier coating system applied to a substrate for gas turbine blades/vanes/heat shields, comprises a metallic bonding layer having NiCoCrAlX alloy, an inner ceramic layer (10) on the metallic bonding layer, and an outer ceramic layer (13) on the inner ceramic layer. The inner layer has a thickness of 40-50% of the total thickness of the inner and the outer layer. The inner layer has a thickness of 50 mu m. The total thickness amounts of the inner and the outer layer are 600 mu m. An independent claim is included for a metallic component.

    Layer system
    26.
    发明专利
    Layer system 未知

    公开(公告)号：GB2432591B

    公开(公告)日：2011-05-18

    申请号：GB0623305

    申请日：2006-11-22

    Applicant: SIEMENS AG

    Inventor： KAISER AXEL ,  SCHUMANN ECKART ,  SUBRAMANIAN RAMESH

    IPC: C23C28/00 ,  F01D5/28

    Abstract: The layer system useful in gas turbine blades/vanes/heat shields, comprises a substrate (4) having a pyrochlore structure, an outer ceramic layer (13) on the substrate, an inner ceramic layer (10) present beneath the outer ceramic layer, and a metallic bonding layer (7) present on the substrate and beneath the outer ceramic layer. The inner ceramic layer has a thickness of 10-50% compared to the total layer thickness of the inner- and the outer ceramic layer of 400 mu m.

    27.
    发明专利
    未知

    公开(公告)号：AT506332T

    公开(公告)日：2011-05-15

    申请号：AT07009113

    申请日：2007-05-07

    Applicant: SIEMENS AG

    Inventor： SUBRAMANIAN RAMESH

    IPC: C04B35/468 ,  C04B35/50 ,  C23C28/00 ,  C23C30/00

    Abstract: Ceramic powder comprises a pyrochlore structure (I); 0.5-10 wt.% of a secondary oxide of zirconium and/or hafnium; and optionally a sintering auxiliary agent, which is up to 0.05 wt.% of silicon oxide, up to 0.1 wt.% of calcium oxide, up to 0.1 wt.% of magnesium oxide, up to 0.1 wt.% of iron oxide, up to 0.1 wt.% of aluminum oxide and up to 0.08 wt.% of titanium oxide. Ceramic powder comprises a pyrochlore structure of formula (Gd v(Zr xHf y)O z) (I); 0.5-10 wt.% of a secondary oxide of zirconium and/or hafnium; and optionally a sintering auxiliary agent, which is up to 0.05 wt.% of silicon oxide, up to 0.1 wt.% of calcium oxide, up to 0.1 wt.% of magnesium oxide, up to 0.1 wt.% of iron oxide, up to 0.1 wt.% of aluminum oxide and up to 0.08 wt.% of titanium oxide. v : 2; x+y : 2; and z : 7. Where: y is greater than x or less than x. Independent claims are included for: (1) a ceramic layer (13) made from the powder; and (2) a layer system exhibiting a ceramic layer, which represents preferably an external layer.

    SYSTEME STRATIFIE A PHASE PYROCHLORE.
    29.
    发明专利
    SYSTEME STRATIFIE A PHASE PYROCHLORE. 未知

    公开(公告)号：FR2923481A1

    公开(公告)日：2009-05-15

    申请号：FR0806034

    申请日：2008-10-30

    Applicant: SIEMENS AG

    Inventor： SCHUMANN ECKART ,  SUBRAMANIAN RAMESH

    IPC: C04B35/48 ,  B32B18/00 ,  C23C30/00

    Abstract: Ce système stratifié comprend un substrat, une couche métallique d'accrochage, qui est en alliage de NiCoCrAIX, une couche intérieure en céramique sur la couche métallique d'accrochage, notamment une couche d'oxyde de zirconium stabilisé, notamment une couche d'oxyde de zirconium stabilisé par de l'yttrium, une couche extérieure en céramique étant présente sur la couche intérieure en céramique, cette couche ayant pour au moins 80 % en poids, notamment pour 100 % en poids, de phase pyrochlore - Gd2Zr2O7.

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