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Method of preparing contacts and electrodes of electric vacuum apparatuses

  • US 4,420,346 A
  • Filed: 07/16/1982
  • Issued: 12/13/1983
  • Est. Priority Date: 11/28/1980
  • Status: Expired due to Fees
First Claim
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1. A method of preparing contacts and electrodes of electric vacuum apparatuses comprising the steps of exposing the surface of the contacts (electrodes) to a concentrated thermal flux of 104 to 106 W/cm2 in a vacuum or in the atmosphere of an inert gas and subjecting said surface to subsequent cooling, said concentrated thermal flux is applied for 21 to 100 ms and a rate of cooling during the cooling step is chosen to be within the range 104 to 106 K/s.

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