초록 ▼

An electric field device is obtained by the steps of employing a highly pure and mechanically electrically chemically and thermally extremely durable ceramic material, such as a high purity alumina porcelain, as a dielectric material, disposing electrodes on the shaped material before sintering by a

An electric field device is obtained by the steps of employing a highly pure and mechanically electrically chemically and thermally extremely durable ceramic material, such as a high purity alumina porcelain, as a dielectric material, disposing electrodes on the shaped material before sintering by a thick film printing technique, such as screen printing, with a dispersion ink of finely divided metal, e.g. tungsten, and sintering the shaped material integrally with the electrodes. The product is extremely dense, mechanically electrically chemically and thermally durable and highly reliable.

대표청구항 ▼

A method of making a high voltage electric field device used for the formation of a corona discharge comprising: providing a first raw sheet of a fine high purity alumina ceramic dielectric material, the first sheet including opposite upper and lower surfaces; printing a linear electrode on the uppe

A method of making a high voltage electric field device used for the formation of a corona discharge comprising: providing a first raw sheet of a fine high purity alumina ceramic dielectric material, the first sheet including opposite upper and lower surfaces; printing a linear electrode on the upper surface of the first sheet of fine high purity alumina ceramic dielectric material with a dispersion ink of a finely divided tungsten metal; printing a planar electrode on the lower surface of the first sheet with said dispersion ink of a finely divided metal, neither the linear electrode nor the planar electrode including an electrical connection through the upper sheet; providing a second raw sheet of the fine high purity alumina dielectric material with a hole extending therethrough; filling the hole with said dispersion ink to form a conductor; laying the first sheet upon the second sheet so that the planar electrode on the lower surface of the first sheet directly contacts the second sheet; and sintering the layered sheets subsequent to said filling step.