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Title:
CARBONIZED LA2O3 AND LU2O3 CO-DOPED MO CATHODE MATERIAL AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2018/036068
Kind Code:
A1
Abstract:
A carbonized La2O3 and Lu2O3 co-doped Mo cathode material and a preparation method therefor pertain to the technical field of rare earth refractory metal cathode materials. A molybdenum substrate is doped with rare earth active substances La2O3 and Lu2O3. The total added amount of the rare earth active substances is 2.0-5.0 wt%. A rare earth oxide doped molybdenum powder is prepared by using a sol-gel method, a La2O3 and Lu2O3 doped Mo powder is obtained by using a secondary reduction process, and a molybdenum rod is obtained through compression and sintering. An un-carbonized La2O3 and Lu2O3 doped Mo cathode is obtained by processing the molybdenum rod with rotary calcination, drawing, cleaning, straightening, winding, setting, and cutting processes. The cathode is processed with a high-temperature transient carbonization process to obtain a carbonized cathode material with a high carbonization degree. The cathode is subjected to high temperature degassing and activation, to obtain an environmentally friendly non-radioactive cathode material with good emission performance and excellent emission stability.

Inventors:
WANG JINSHU (CN)
DONG LIRAN (CN)
ZHANG JIE (CN)
TIAN MINGCHUANG (CN)
LIU WEI (CN)
ZHOU MEILING (CN)
ZUO TIEYONG (CN)
Application Number:
PCT/CN2016/113406
Publication Date:
March 01, 2018
Filing Date:
December 30, 2016
Export Citation:
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Assignee:
UNIV BEIJING TECHNOLOGY (CN)
International Classes:
H01J23/04; H01J9/04
Foreign References:
CN106206216A2016-12-07
CN101447376A2009-06-03
CN103700557A2014-04-02
CN103849804A2014-06-11
US6281626B12001-08-28
Attorney, Agent or Firm:
BEIJING SIHAI TIANDA INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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