| 摘要 |
1499030 Bonding metal to glass PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 16 Dec 1975 [19 Dec 1974] 51447/75 Heading C1M A metal article, at least the surface of which is of copper, is fusion-bonded to a glass article whose thermal expansion coefficient is accordant with that of the metal article, and which glass contains 0À2-5% by weight of Cr 2 O 3 and/or CuO, by heating the metal article at above 300‹ C. in an oxygen-containing atmosphere (e.g. air) to oxidize the copper, and then fusion-bonding the metal article to the glass by heating in a non-oxidizing atmosphere (e.g. 680-830‹ C. in N 2 ). The metal may be pre-heated in a reducing atmosphere. A semi-conductor crystal may be disposed between two copper-clad wires of Ni-Fe alloy, and this assembly encapsulated in a tube of a glass as defined above. Examples of Cr 2 O 3 -containing glasses are given. |
