Cermet insert high voltage holdoff improvement for ceramic/metal vacuum devices

Title: Cermet insert high voltage holdoff improvement for ceramic/metal vacuum devices

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Abstract

An improved metal-to-ceramic seal is provided wherein the ceramic body of the seal contains an integral region of cermet material in electrical contact with the metallic member, e.g., an electrode, of the seal. The seal is useful in high voltage vacuum devices, e.g., vacuum switches, and increases the high-voltage holdoff capabilities of such devices. A method of fabricating such seals is also provided.

Inventors:: Ierna, W F

Publication Date:: 1986-03-11

Research Org.:: General Electric Co., St. Petersburg, FL (USA)

OSTI Identifier:: 6710884

Application Number:: ON: DE87007217

Assignee:: Dept. of Energy

DOE Contract Number:: AC04-76DP00656

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING; 36 MATERIALS SCIENCE; CERAMICS; SEALS; ELECTRON TUBES; METALS; FABRICATION; VACUUM SYSTEMS; CERMETS; COMPOSITE MATERIALS; ELEMENTS; MATERIALS; 420800* - Engineering- Electronic Circuits & Devices- (-1989); 360000 - Materials

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                    Ierna, W F. Cermet insert high voltage holdoff improvement for ceramic/metal vacuum devices.  United States: N. p., 1986. 
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                    Ierna, W F. Cermet insert high voltage holdoff improvement for ceramic/metal vacuum devices.  United States.

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                    Ierna, W F. Tue .  
        "Cermet insert high voltage holdoff improvement for ceramic/metal vacuum devices".  United States.

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@article{osti_6710884,

  title        = {Cermet insert high voltage holdoff improvement for ceramic/metal vacuum devices},

  author       = {Ierna, W F},

  abstractNote = {An improved metal-to-ceramic seal is provided wherein the ceramic body of the seal contains an integral region of cermet material in electrical contact with the metallic member, e.g., an electrode, of the seal. The seal is useful in high voltage vacuum devices, e.g., vacuum switches, and increases the high-voltage holdoff capabilities of such devices. A method of fabricating such seals is also provided.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1986},

  month        = {3}

}

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Cermet insert high voltage holdoff for ceramic/metal vacuum devices

Patent Ierna, William F

An improved metal-to-ceramic seal is provided wherein the ceramic body of the seal contains an integral region of cermet material in electrical contact with the metallic member, e.g., an electrode, of the seal. The seal is useful in high voltage vacuum devices, e.g., vacuum switches, and increases the high-voltage holdoff capabilities of such devices. A method of fabricating such seals is also provided.
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Cermet insert high voltage holdoff for ceramic/metal vacuum devices

Patent Ierna, W F

A high voltage holdoff metal-to-ceramic seal for a vacuum device is described comprising: a metallic conductor; a body of ceramic material in sealing contact with the metallic conductor; and a region of cermet material substantially integral with the ceramic material and in electrical contact with the conductor. The cermet material has a resistivity less than the ceramic material, whereby the resultant resistivity gradient in the seal is effective to substantially increase the voltage holdoff capacity of the seal.
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