| 摘要 |
Improved electrical capacitors are formed utilizing a thin dielectric layer which is metallized with an aluminum layer and a protective layer of metal, such as lead, tin or zinc, which does not readily oxidize in air is deposited on the aluminum layer. Capacitors of this type are formed by pleating, or folding, the dielectric layer so that one portion of an electrode is brought into contact with or adjacent to another portion of the same or of the opposite electrode. The protective layer prevents conversion of the aluminum layer between the adjacent electrode areas to insulating aluminum oxide, which could otherwise occur during the application of a high voltage pulse during testing or use of the capacitor.
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