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US 4,066,309 AGranted
Water vapor releasing composition of matter and device, and process for their use
AssigneeSaes Getters S.P.A.
InventorStephen J. Hellier
Life of this patent
Estimating the term…
Abstract
A device for releasing water vapor in electron tubes comprises a holder and a water vapor releasing material carried by said holder. In one embodiment the water vapor releasing material is a hydroxide or hydrated oxide of a metallic element in combination with a binder. In another embodiment it is hydrated alumina.
Claims8
A method for introducing water vapor into an electron tube comprising the steps of:
- 1. introducing particulate hydrated alumina into the tube,
- 2. heating the hydrated alumina to release water vapor, in which the heating comprises two steps:
- A. heating the hydrated alumina by baking-out said tube to a first temperature to release a first amount of water vapor, and then after completion of the bake out,
- B. heating the hydrated alumina by induction heating to a higher temperature to release a second amount of water vapor.
1 more element
A method for introducing water vapor into an electron tube comprising the steps of:
- 1. introducing into the tube a water vapor generating composition of matter comprising:
- A. a particulate hydrated oxide or a particulate hydroxide of a metal chosen from the group consisting of Ir, Cd, Ni, Zr, Ti, Al, Ba and Mg and
- B. a particulate metal whose particles are cold welded together on the application of compressive forces, forming a porous matrix containing the water vapor releasing material,
- 2. heating the porous matrix of hydrated oxide or hydroxide and particulate metal to release water vapor in which the heating comprises two steps:
- A. heating the composition of matter by baking-out said tube to a first temperature to release a first amount of water vapor, and then after completion of the bake-out,
- B. heating the composition of matter by induction heating to a higher temperature to release a second amount of water vapor.
3 more elements
A method for introducing water vapor into an electron tube comprising the steps of:
- 1. introducing into the tube a water vapor generating composition of matter comprising:
- A. a particulate hydrated oxide or a particulate hydroxide of a metal chosen from the group consisting of Ir, Cd, Ni, Zr, Ti, Al, Ba and Mg and
- B. a particulate metal whose particles are cold welded together on the application of compressive forces said metal being selected from the group consisting of Fe, Co and Ni, forming a porous matrix containing the water vapor releasing material,
- 2. heating the hydrated oxide or hydroxide and porous matrix of particulate metal to release water vapor in which the heating comprises two steps:
- A. heating the composition of matter by baking-out said tube to a first temperature to release a first amount of water vapor, and then after completion of the bake-out,
- B. heating the composition of matter by induction heating to a higher temperature to release a second amount of water vapor.
3 more elements
A method for introducing water vapor into an electron tube comprising the steps of:
- 1. introducing into the tube a water vapor generating composition of matter comprising:
- A. particulate Al(OH).sub.3 and
- B. particulate Ni
- wherein the weight ratio of A:B is from 25:1 to 1:25 and
- 2. heating the composition of matter to release water vapor in which the heating comprises two steps:
- A. heating the composition of matter by baking-out said tube to a first temperature to release a first amount of water vapor, and then after completion of the bake-out,
- B. heating the composition of matter by induction heating to a higher temperature to release a second amount of water vapor.
4 more elements
A method for introducing water vapor into an electron tube comprising the steps of:
- 1. introducing into the tube a water vapor generating composition of matter comprising:
- A. particulate hydrated alumina
- B. a particulate metal whose particles are cold welded together on the application of compressive forces:
- 2. heating the composition of matter to release water vapor
- in which the heating comprises two steps:
- A. heating the composition of matter by baking-out said tube to a first temperature to release a first amount of water vapor, and then after completion of the bake-out,
- B. heating the composition of matter by induction heating to a higher temperature to release a second amount of water vapor.
4 more elements
A method for introducing water vapor into an electron tube comprising the steps of:
- 1. introducing into the tube a water vapor generating composition of matter comprising:
- A. particulate Al(OH).sub.3
- B. a particulate metal whose particles are cold welded together on the application of compressive forces
- 2. heating the composition of matter to release water vapor
- in which the heating composition two steps:
- A. heating the composition of matter by baking-out said tube to a first temperature to release a first amount of water vapor, and then after completion of the bake-out,
- B. heating the composition of matter by induction heating to a higher temperature to release a second amount of water vapor.
4 more elements
A method for introducing water vapor into an electron tube comprising the steps of:
- 1. introducing particulate hydrated alumina into the tube,
- 2. heating the hydrated alumina to release water vapor, in which the heating comprises two steps:
- A. heating the hydrated alumina by baking-out said tube to a first temperature up to about 400.degree. C to release a first amount of water vapor and then after completion of the baking out step,
- B. heating the hydrated alumina to a higher temperature of about 1000.degree. C to release a second amount of water vapor.
1 more element
Dependencies are inferred from the claim text.