A kind of tungsten-based electrode material and preparation method thereof
An electrode material, tungsten-based technology, applied in the field of tungsten-based electrode material and its preparation, tungsten-based electrode material for high-energy ignition gas discharge tube and its preparation, can solve the problem that the coating is prone to cracking or peeling, and reduces the emission performance of oxide cathode , affecting the service life of electrodes, etc., to achieve the effect of ensuring performance uniformity, improving service life, tissue uniformity and performance uniformity.
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Embodiment 1
[0038] According to the tungsten: nickel: strontium mass fraction ratio in the finished tungsten-based electrode material is 98.5:0.5:1, weigh the raw material yellow tungsten, Ni(NO 3 ) 2 ·6H 2 O and Sr(NO 3 ) 2 , Ni(NO 3 ) 2 ·6H 2 O and Sr(NO 3 ) 2 Dissolve completely to obtain the mixed aqueous solution of the two, then pour the mixed aqueous solution into a kneader, then mix yellow tungsten powder (average particle size of 50 μm) into the above mixed aqueous solution, stir and mix evenly through the kneader, the kneader comes with heating The system is always heated during the stirring process, and the heating temperature is 90°C until the powder is completely dry to obtain the precursor powder; the precursor powder is loaded into a boat and calcined in the air with a high-temperature resistance furnace (open the furnace door), the calcining temperature: 750°C, 1h; the calcined powder obtained after calcination is reduced in a reduction furnace under a hydrogen atm...
Embodiment 2
[0043] According to the tungsten: nickel: strontium mass fraction ratio in the finished tungsten-based electrode material is 96.5:0.5:3, weigh the raw material yellow tungsten, Ni(NO 3 ) 2 ·6H 2 O and Sr(NO 3 ) 2 , Ni(NO 3 ) 2 ·6H 2 O and Sr(NO 3 ) 2 Dissolve completely to obtain the mixed aqueous solution of the two, then pour the mixed aqueous solution into a kneader, then mix yellow tungsten powder (average particle size of 50 μm) into the above mixed aqueous solution, stir and mix evenly through the kneader, the kneader comes with heating The system is always heated during the stirring process, and the heating temperature is 85°C until the powder is completely dry to obtain the precursor powder; the precursor powder is loaded into a boat and calcined in the air with a high-temperature resistance furnace (open the furnace door), the calcining temperature: 700°C, 1.5h; the obtained calcined powder is reduced in a reduction furnace under a hydrogen atmosphere, the red...
Embodiment 3
[0046] According to the tungsten: nickel: strontium mass fraction ratio in the finished tungsten-based electrode material is 93.5:0.5:6, weigh the raw material yellow tungsten, Ni(NO 3 ) 2 ·6H 2 O and Sr(NO 3 ) 2 , Ni(NO 3 ) 2 ·6H 2 O and Sr(NO 3 ) 2 Dissolve completely to obtain a mixed aqueous solution of the two, then pour the mixed aqueous solution into a kneader, then mix yellow tungsten powder (average particle size of 40 μm) into the above mixed aqueous solution, stir and mix evenly through the kneader, and the kneader comes with heating The system is always heated during the stirring process, and the heating temperature is 95°C until the powder is completely dry to obtain the precursor powder; the precursor powder is loaded into a boat and calcined in the air with a high-temperature resistance furnace (open the furnace door), the calcining temperature: 700°C, 2h; reduce the obtained calcined powder in a reduction furnace under a hydrogen atmosphere, the reducti...
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