Invention Grant
US08167191B2 High temperature seal for joining ceramic components such as cells in a ceramic oxygen generator 有权
高温密封用于接合陶瓷元件如陶瓷氧气发生器中的电池

High temperature seal for joining ceramic components such as cells in a ceramic oxygen generator
Abstract:
A multi-layer seal arrangement includes a dissolution barrier between a braze alloy and a ceramic component. The inventive seal is useful for joining a ceramic component to another ceramic component or a metal component, for example. In one example, the braze comprises a gold alloy and the dissolution barrier comprises a layer of alumina on the order of 2-3 microns thick. A titanium wetting layer is provided between the alumina layer and the alloy. A metallization layer provided between the dissolution barrier and the ceramic component in one example comprises a layer of gold between two thin layers of titanium. In one particular example, a platinum mesh is included with the gold of the braze alloy to control braze flow during the brazing operation.
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