Iron-nickel alloys having improved glass sealing properties

Details Iron-nickel alloys having improved glass sealing properties Iron-nickel alloys having improved glass sealing properties

1986-01-27

1987-12-08

Rutledge, L. Dewayne

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

174 52FP, 357 67, 420 94, 420 95, 420 96, 420 97, 420 98, 420459, 420581, 420582, 420583, 420584, 420585, 420586, C22C 3808, C22C 3000, H05K 506

Patent

active

047118261

ABSTRACT:
The present invention relates to iron-nickel alloys having improved glass sealing properties. Alloys of the present invention contain from about 30% to about 60% nickel, from about 0.5% to about 3% silicon, from about 0.5% to about 3.5% aluminum and the balance essentially iron. Preferably, the alloys have a total aluminum plus silicon content of less than about 4%. The alloys of the present invention have particular utility in electronic and electrical applications. For example, they may be used as a lead frame or a similar component in a semiconductor package.

REFERENCES:
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patent: 1759477 (1930-05-01), Armstrong et al.
patent: 1760326 (1930-05-01), Stablein
patent: 1768238 (1930-06-01), Elmen
patent: 1818054 (1931-08-01), Elmen
patent: 3183454 (1964-06-01), Williams
patent: 3404999 (1968-10-01), Tanzman et al.
patent: 3705827 (1972-12-01), Muzyka et al.
patent: 4149910 (1979-04-01), Popplewell
patent: 4172742 (1979-10-01), Rowcliffe et al.
patent: 4442068 (1984-04-01), Sugitani et al.
"Iron-Nickel Alloys", Metals Handbook, 8th Edition, vol. 1, 1961, pp. 788-791.

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