Non-consumable electrode
OwnerDavid G. Bykhovsky, Albert A. Voropaev +2inventors
InventorsDavid G. Bykhovsky, Albert A. Voropaev, Evgeny F. Olennikov, Alla V. Lopatina
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Abstract
A non-consumable electrode for use in arc and plasma devices in an inert gas atmosphere comprising a holder and an active portion made of a refractory metal with emission admixtures, the active portion being connected with the holder so that its outer side surface is exposed to a height exceeding 1/4 of a diameter thereof.
Claims31
A non-consumable electrode for use in arc and plasma devices in an inert gas atmosphere, made in the form of a cylinder with a tip, comprising:
- a holder and an active portion, made of a refractory metal with emission admixtures, connected with said holder wherein the outer side surface of the active portion is exposed to a height exceeding 1/4 of the diameter thereof, whereby conditions for transfer of the material from the side surface of the active portion to a work surface thereof are provided.
A non-consumable electrode for use in plasma devices in an inert gas atmosphere, made in the form of a cylinder with a tip, comprising:
- a holder and an active portion, made of an alloy comprising a refractory metal of Group IV A of the periodic system and emission admixtures of rare-earth metal compounds, connected to said holder wherein the outer side surface of the active portion is exposed to a height exceeding 1/4 of the diameter thereof.
A non-consumable electrode for use in arc and plasma devices in an inert gas atmosphere, made in the form of a cylinder with a tip, comprising:
- a holder and an active portion, connected to said holder, wherein the outer side surface of the active portion is exposed to a height exceeding 1/4 of the diameter thereof, the active portion being made from a refractory metal powder comprising titanium in amounts of 98 to 99.5% and an emission admixture comprising praseodymium in an amount of 0.5 to 2% by weight.
A non-consumable electrode for use in arc and plasma devices in an inert gas atmosphere, made in the form of a cylinder with a tip, comprising:
- a holder and an active portion connected to said holder wherein the outer side surface is exposed to a height exceeding 1/4 of the diameter thereof, the active portion being made from a powder of a refractory metal comprising titanium in an amount of 95 to 99.5% by weight and an emission admixture comprising praseodymium compounds in amounts of 0.5 to 2% by weight.
Dependencies are inferred from the claim text.