| 摘要 |
1,150,906. Coated ferrite element. MULLARD Ltd. 27 July, 1966, No. 33785/66. Heading B2K [Also in Divisions Cl and H1] A ferrite element e.g. a memory core, is coated with a non-magnetic metal-containing vitreous layer. The coating may be applied from a suspension of a glass powder and a metal powder in an organic solvent, and then fired. In the Ex., a Mn Zn ferrite core was formed and sintered in O<SP>2</SP>-N 2 at up to 1340‹C, then heated to 120-160‹C and dipped in a suspension containing 50-60% Ag, 4-9% lead borosilicate glass, and 2-4 % binder, e.g. butyl methacrylate or polyvinyl acetate, in a solvent, e.g. butyl acetate or ethylene glycol monoethyl ether. Three layers were applied, each being dried, e.g. in a stream of air. The element was then fired at 750-950‹C., in air.
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