Interfacial bonding oxides for glass-ceramic-to-metal seals
| DWPI Title: Forming interfacial seal between glass-ceramic component and metal component by heating glass-ceramic component comprising silicon dioxide, lithium oxide, phosphorus pentoxide and metal oxidants, and metal component, and cooling |
| Abstract: The present invention relates to structure including an interfacial seal between a glass-ceramic component and a metal component, as well as methods for forming such structures. In particular embodiments, the interfacial seal includes a metal oxide. Such interfacial seals can be beneficial for, e.g., hermetic seals between a glass-ceramic component and a metal component. |
| Use: The method is used for an interfacial seal between a glass-ceramic component and a metal component (claimed), which is used in an electrical connectors for aerospace applications, communication satellites, microwave communication equipment, military communication and radar systems, automotive industry, and commercial communication. |
| Advantage: The method improves the glass-ceramics interfacial seals. |
| Novelty: Method for forming an interfacial seal between a glass-ceramic component and a metal component, involves providing a glass-ceramic component configured to provide a glass-ceramic composition comprising 65-80 wt.% silicon dioxide, 8-16 wt.% lithium oxide, 2-8 wt.% aluminum dioxide, 1-8 wt.% potassium oxide, 1-5 wt.% phosphorus pentoxide, 0.5-7 wt.% boron oxide, 0-5 wt.% zinc oxide, and 0.5-5 wt.% one or more metal oxidants, and providing a metal component, where the glass-ceramic component is contacted with a portion of the metal component, heating the glass-ceramic component and metal component to a first temperature (T1 ) at 900-1050° C, initially cooling to a second temperature (T2 ) at 400-750° C, and further cooling the mixture to a fourth temperature (T4 ) at 10-500° C. |
| Filed: 11/22/2019 |
| Application Number: US16691948A |
| Tech ID: SD 12808.2 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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