Equilibration of a multibeam inductive output tube
US-10490383-B2 · Nov 26, 2019 · US
Carburized La2O3 and Lu2O3 co-doped Mo filament cathode
US10388484B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10388484-B2 |
| Application number | US-201615757343-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 30, 2016 |
| Priority date | Aug 26, 2016 |
| Publication date | Aug 20, 2019 |
| Grant date | Aug 20, 2019 |
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Abstract
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A carburized La2O3 and Lu2O3 co-doped Mo filament cathode is made from lanthanum oxide (La2O3) and lutetium oxide (Lu2O3) doped molybdenum (Mo) powders, the lanthanum oxide (La2O3) and lutetium oxide (Lu2O3) doped molybdenum (Mo) powders contain La2O3, Lu2O3 and Mo with the total concentration of La2O3 and Lu2O3 being 2.0-5.0 wt. % and the rest being Mo.
First claim
Opening claim text (preview).
What is claimed is: 1. A rare earth oxide doped molybdenum filament cathode material, comprising lanthanum oxide (La 2 O 3 ), lutetium oxide (Lu 2 O 3 ) and molybdenum (Mo), wherein the total concentration of La 2 O 3 and Lu 2 O 3 is 2.0-5.0 wt. % and the rest is Mo. 2. The rare earth oxide doped molybdenum filament cathode material of claim 1 , wherein the total concentration of La 2 O 3 and Lu 2 O 3 ranges from 3 to 4.5 wt. %. 3. The rare earth oxide doped molybdenum filament cathode material of claim 1 , wherein La 2 O 3 and Lu 2 O 3 have a weight ratio of (2-5):1. 4. The rare earth oxide doped molybdenum filament cathode material of claim 1 , wherein La 2 O 3 and Lu 2 O 3 have a weight ratio of 4:1. 5. The rare earth oxide doped molybdenum filament cathode material of claim 1 , consisting of lanthanum oxide (La 2 O 3 ), lutetium oxide (Lu 2 O 3 ) and molybdenum (Mo). 6. The rare earth oxide doped molybdenum filament cathode material of claim 1 , wherein the concentration of lanthanum oxide (La 2 O 3 ) is higher than that of lutetium oxide (Lu 2 O 3 ). 7. The rare earth oxide doped molybdenum filament cathode material of claim 1 , wherein La 2 O 3 , Lu 2 O 3 and Mo are evenly mixed. 8. A filament cathode made from lanthanum oxide (La 2 O 3 ) and lutetium oxide (Lu 2 O 3 ) doped molybdenum (Mo) powders, wherein the lanthanum oxide (La 2 O 3 ) and lutetium oxide (Lu 2 O 3 ) doped molybdenum (Mo) powders comprise La 2 O 3 , Lu 2 O 3 and Mo with the total concentration of La 2 O 3 and Lu 2 O 3 being 2.0-5.0 wt. % and the rest being Mo. 9. The filament cathode of claim 8 , wherein the total concentration of La 2 O 3 and Lu 2 O 3 ranges from 3 to 4.5 wt. %. 10. The filament cathode of claim 8 , wherein the concentration of La 2 O 3 is higher than that of Lu 2 O 3 . 11. The filament cathode of claim 10 , wherein La 2 O 3 and Lu 2 O 3 have a weight ratio of (2-5):1. 12. The filament cathode of claim 11 , wherein La 2 O 3 and Lu 2 O 3 have a weight ratio of 4:1. 13. The filament cathode of claim 8 , wherein the lanthanum oxide (La 2 O 3 ) and lutetium oxide (Lu 2 O 3 ) doped molybdenum (Mo) powders consist of La 2 O 3 , Lu 2 O 3 and Mo. 14. The filament cathode of claim 8 , wherein the filament cathode is carburized and has a working temperature in a magnetron ranges from 1200 to 1400° C. 15. The filament cathode of claim 8 , wherein La 2 O 3 , Lu 2 O 3 and Mo are evenly mixed in the lanthanum oxide (La 2 O 3 ) and lutetium oxide (Lu 2 O 3 ) doped molybdenum (Mo) powders.
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Classifications
Carburising · CPC title
Circuits · CPC title
Manufacture, activation of the emissive part · CPC title
Processes characterised by the sequence of their steps · CPC title
After-treatment · CPC title
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- What does patent US10388484B2 cover?
- A carburized La2O3 and Lu2O3 co-doped Mo filament cathode is made from lanthanum oxide (La2O3) and lutetium oxide (Lu2O3) doped molybdenum (Mo) powders, the lanthanum oxide (La2O3) and lutetium oxide (Lu2O3) doped molybdenum (Mo) powders contain La2O3, Lu2O3 and Mo with the total concentration of La2O3 and Lu2O3 being 2.0-5.0 wt. % and the rest being Mo.
- Who is the assignee on this patent?
- Univ Beijing Technology
- What technology area does this patent fall under?
- Primary CPC classification H01J23/04. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Aug 20 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).