摘要:
Disclosed herein is an article comprising a substrate; the substrate comprising a ceramic or a ceramic matrix composite; and a layer comprising coarse particles disposed upon the substrate; the coarse particles having an average particle size of 0.1 to about 1000 micrometers. Disclosed herein too is a method comprising disposing coarse particles on a substrate; the substrate comprising a ceramic or a ceramic matrix composite; the coarse particles having an average particle size of 0.1 to about 1000 micrometers.
摘要:
A method for fabricating a component having an environmental barrier coating. The method includes providing a component including silicon having a first coefficient of thermal expansion. A bondcoat is bonded to at least a portion of an outer surface of the component. An intermediate layer having a general composition of RE2Si2O7 is bonded to the bondcoat. The intermediate layer has a second coefficient of thermal expansion matched to the first coefficient of thermal expansion. A protective layer having a general composition of RE2SiO5 is bonded to the intermediate layer. A surface layer is bonded to the protective layer. The surface layer includes RE and has a ratio of RE to oxygen of at least 2:3.
摘要翻译:一种制造具有环境屏障涂层的部件的方法。 该方法包括提供包括具有第一热膨胀系数的硅的部件。 键合涂层结合到组件的外表面的至少一部分上。 将具有一般组成为RE 2 Si 2 O 7的中间层粘合到粘合涂层。 中间层具有与第一热膨胀系数相匹配的第二热膨胀系数。 具有一般组成为RE 2 SiO 5的保护层与中间层接合。 表面层与保护层结合。 表面层包括RE,RE与氧的比例至少为2:3。
摘要:
An electrochemical cell includes an anode connectable to a current tap and a charging medium in electrical contact with the anode. A switching device is configured to stop a charging operation of the electrochemical cell upon activation by the charging medium.
摘要:
A cell module and modular cell tray apparatus for a modular electrochemical device that are more easily manufactured and serviced. A cell module is provided having a plurality of electrochemical cells. The cell module includes an electrically conductive carrier element having a plurality of apertures, wherein each aperture is configured to accept a top portion of an electrode body of an electrochemical cell. A modular cell tray apparatus is provided having a plurality of the cell modules. The cell tray apparatus includes an electrically insulating tray having rows of cell receptacles to accept the cell modules. A modular electrochemical device is provided having a plurality of the cell tray apparatuses. The modular electrochemical device includes a plurality of electrical connectors configured to electrically connect the cell modules within a cell tray apparatus, and to electrically connect the cell tray apparatuses to each other.
摘要:
A battery stack includes a plurality of curved base layers, at least one curved bipolar layer, at least one anode layer disposed between a first curved base layer of the plurality of curved base layers and the at least one curved bipolar layer, at least one cathode layer disposed between the at least one bipolar layer, a second base layer and a plurality of seals. The first base layer and the at least one bipolar layer are provided with one or more seals that seal the first base layer to the at least one bipolar layer without contacting the anode and/or the cathode layer.
摘要:
An energy storage device includes a housing having an interior surface defining a volume and a plurality of solid electrolyte elements disposed in the volume. Each solid electrolyte element has a first surface that defines at least a portion of a first, cathodic chamber, and a second surface that defines a second, anodic chamber. A plurality of individual anodic chambers are thus provided, at least one of which is evacuated below atmospheric pressure. A majority of anodic chambers can be spaced from one another in a manner that provides a substantially uniform reaction rate throughout the cathodic chamber. The housing and the plurality of solid electrolyte elements together may be configured to define a second volume devoid of solid electrolyte elements and that is sufficient in size to accommodate a desired number of solid electrolyte elements and to provide an accessible cathodic chamber filling point and that is further sufficient in size to alter the volume of the cathodic chamber with respect to the volume of the plurality of anodic chambers to achieve a desired volumetric ratio between the cathodic and anodic chambers.
摘要:
An article comprises a substrate and a coating disposed over the substrate, wherein the coating comprises a monoclinic silicate phase that undergoes no solid state phase transformation reaction in the temperature range from about 1100 degrees Celsius to about 1275 degrees Celsius. Another article comprises a substrate comprising a silicon-bearing ceramic material; a bondcoat disposed over the substrate, wherein the bondcoat comprises silicon; a coating disposed over the bondcoat, wherein the coating comprises a monoclinic silicate phase, the silicate phase comprising a) yttrium and b) at least one other species selected from the group consisting of ytterbium and lutetium, wherein the material undergoes no solid state phase transformation reaction in the temperature range from about 1100 degrees Celsius to about 1275 degrees Celsius; and a topcoat disposed over the coating, wherein the topcoat comprises at least one selected from the group consisting of an aluminate, an aluminosilicate, a silicate (such as a rare earth monosilicate, for example), and zirconia.
摘要:
A method for fabricating a component having an environmental barrier coating. The method includes providing a component including silicon having a first coefficient of thermal expansion. A bondcoat is bonded to at least a portion of an outer surface of the component. An intermediate layer having a general composition of RE2Si2O7 is bonded to the bondcoat. The intermediate layer has a second coefficient of thermal expansion matched to the first coefficient of thermal expansion. A protective layer having a general composition of RE2SiO5 is bonded to the intermediate layer. A surface layer is bonded to the protective layer. The surface layer includes RE and has a ratio of RE to oxygen of at least 2:3.
摘要翻译:一种制造具有环境屏障涂层的部件的方法。 该方法包括提供包括具有第一热膨胀系数的硅的部件。 键合涂层结合到组件的外表面的至少一部分上。 将具有一般组成为RE 2 Si 2 O 7的中间层粘合到粘合涂层。 中间层具有与第一热膨胀系数相匹配的第二热膨胀系数。 具有一般组成为RE 2 SiO 5的保护层与中间层接合。 表面层与保护层结合。 表面层包括RE,RE与氧的比例至少为2:3。
摘要:
A method of protecting an article from a high temperature environment, the method includes providing a substrate comprising silicon, forming a slurry coating composition, wherein the composition comprises a metallic silicon powder, a rare-earth oxide, an alkaline earth metal oxide, an aluminum oxide, or a combination comprising at least one of the foregoing, and a binder effective to chemically stabilize the slurry coating, applying a layer of the slurry coating over the substrate, and heat-treating the slurry coating under conditions sufficient to oxidize the metallic silicon powder and form an alkaline earth metal aluminosilicate, a rare-earth silicate, an aluminum silicate, or a combination comprising at least one of the foregoing bonded to the substrate.
摘要:
An environmental barrier coating for a component including silicon that has a first coefficient of thermal expansion is provided. The environmental coating includes a silicon bondcoat that is bonded to at least a portion of an outer surface of the component. An intermediate layer is bonded to the silicon bondcoat and has a second coefficient of thermal expansion matched to the first coefficient of thermal expansion. The intermediate layer has a general composition of RE2Si2O7. A protective layer is bonded to the intermediate layer and has a general composition of RE2SiO5. A surface layer is bonded to the protective layer. The surface layer includes RE and has a ratio of RE to oxygen of at least 2:3.