Metal founding – Process – Shaping a forming surface
Patent
1982-02-23
1984-11-13
Lin, Kuang Y.
Metal founding
Process
Shaping a forming surface
164 36, 164 44, 164 45, 164 46, 164131, 164138, B22C 702, B22C 924, B22D 2300, B22D 2900
Patent
active
044819994
ABSTRACT:
In a method of forming a thin (<2 .mu.m) unbacked metal foil having a desired curviplanar shape, a soluble polymeric film, preferably comprising polyvinyl alcohol, is formed on a supporting structure having a shape that defines the desired shape of the foil product. A layer of metal foil is deposited onto one side of the soluble film, preferably by vacuum vapor deposition. The metallized film is then immersed in a suitable solvent to dissolve the film and thereby leave the metal foil as an unbacked metal foil element mounted on the supporting structure. Aluminum foils less than 0.2 .mu.m (2,000 .ANG.) thick and having an areal density of less than 54 .mu.g/cm.sup.2 have been obtained.
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Kindel, F. W. et al., "Thin Foil Fabrication," in Review of Scientific Instruments, vol. 50, No. 12, Dec. 1979, pp. 1550-1552.
Springer, R. W. et al., "Structure and Mechanical Properties of Al/Al.sub.x O.sub.y _Vacuum Deposited Laminates," in Thin Solid Films, vol. 54, 1978, pp. 197-205.
Barthell Barry L.
Duchane David V.
Batten, Jr. J. Reed
Eklund William A.
Esposito Michael F.
Gaetjens Paul D.
Lin Kuang Y.
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