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Impregnated Re3W-Sc2O3 mixed base cathode material and preparation method thereof

A re3w-sc2o3, cathode material technology, applied in the field of rare earth refractory metal cathode materials, can solve the problems of high working temperature, easy poisoning, and insufficient emission current of barium tungsten cathode and M-type cathode, and achieve excellent pulse electron emission performance Effect

Inactive Publication Date: 2015-01-21
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented invention relates to an improved type of redox battery that uses rare earth metals instead of lanthanum (La) or ceramic for its electrodes. These materials have better properties such as high emissivity when compared with other types like LiCoO2, which makes them more effective in producing electricity from lightweight batteries.

Problems solved by technology

This patented technical problem addressed in this patents relates to developing an improved electrode for use in generating electromagnetic signals called teraways during their generation process.

Method used

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  • Impregnated Re3W-Sc2O3 mixed base cathode material and preparation method thereof
  • Impregnated Re3W-Sc2O3 mixed base cathode material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 3.6794 g Sc(NO 3 ) 3 ·6H 2 O is dissolved in analytical pure alcohol, take 60 grams of Re 3 Pour the W powder into the scandium nitrate alcohol solution, heat in a water bath and stir continuously, and after the alcohol is evaporated, take out the mixed powder and dry, grind, and sieve. The obtained powder was decomposed at 950° C. for 2 hours in a high-purity hydrogen atmosphere to obtain a precursor powder for preparing the matrix. The powder at 10t / cm 2 Pressed under the pressure of Φ3×1.5mm cathode green body, sintered under the high-purity hydrogen atmosphere, the temperature is 2000 ℃, keep warm for 30min, to obtain the cathode base material. The cathode substrate is impregnated with barium aluminate calcium salt to obtain an impregnated mixed base cathode material. After high-temperature activation treatment, test the thermal emission performance of the cathode at different temperatures, see Table 1

Embodiment 2

[0020] 3.6794 g Sc(NO 3 ) 3 ·6H 2 O is dissolved in analytical pure alcohol, take 30 grams of Re 3 Pour the W powder into the scandium nitrate alcohol solution, heat in a water bath and stir continuously, and after the alcohol is evaporated, take out the mixed powder and dry, grind, and sieve. The obtained powder was decomposed at 950° C. for 2 hours in a high-purity hydrogen atmosphere to obtain a precursor powder for preparing the matrix. The powder at 10t / cm 2 Pressed under the pressure of Φ3×1.5mm cathode green body, sintered under the high-purity hydrogen atmosphere, the temperature is 2000 ℃, keep warm for 30min, to obtain the cathode base material. The cathode substrate is impregnated with barium aluminate calcium salt to obtain an impregnated mixed base cathode material. After high-temperature activation treatment, test the thermal emission performance of the cathode at different temperatures, see Table 1

Embodiment 3

[0022] 3.6794 g Sc(NO 3 ) 3 ·6H 2 O was dissolved in analytical pure alcohol, and 14.25 g of Re 3 Pour the W powder into the scandium nitrate alcohol solution, heat in a water bath and stir continuously, and after the alcohol is evaporated, take out the mixed powder and dry, grind, and sieve. The obtained powder was decomposed at 950° C. for 2 hours in a high-purity hydrogen atmosphere to obtain a precursor powder for preparing the matrix. The powder at 10t / cm 2 Pressed under the pressure of Φ3×1.5mm cathode green body, sintered under the high-purity hydrogen atmosphere, the temperature is 2000 ℃, keep warm for 30min, to obtain the cathode base material. The cathode substrate is impregnated with barium aluminate calcium salt to obtain a new type of impregnated Re 3 W-Sc 2 o 3 Mixed base cathode materials. After the high-temperature activation treatment, test the thermal emission performance of the cathode at different temperatures, see Table 1, see figure 1

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Abstract

The invention discloses an impregnated Re3W-Sc2O3 mixed base cathode material and a preparation method of the impregnated Re3W-Sc2O3 mixed base cathode material, and belongs to the technical field of rare earth refractory metal cathode materials. Re3W replaces W, a Re3W-Sc2O3 mixed base cathode is prepared, the weight of rare earth oxide Sc2O3 accounts for about three percent to eight percent of total mass, impregnated cathode emission active salt is '411 salt' roasting matter, and the molar ratio of barium oxide to calcium oxide to aluminium oxide in finally-prepared calcium aluminate barium salt is 4:1:1. The material prepared through the method has excellent pulse electron emission performance.

Description

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Claims

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Application Information

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Owner BEIJING UNIV OF TECH
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