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Title:
TUNGSTEN-BASE ALLOY MATERIAL AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/027824
Kind Code:
A1
Abstract:
A tungsten-base alloy material and a preparation method therefor. The preparation method comprises: 1) evenly grinding composite powder containing tungsten and zirconium oxide, and then performing annealing treatment at the temperature of 700-1000°C to obtain powder A; and 2) grinding and then compression moulding the powder A, and then performing liquid-phase sintering to obtain a tungsten-base alloy blank so as to obtain the tungsten-base alloy material. According to the preparation method, the annealing treatment is performed on the powder after the first-time grinding, so that metal particles can become soft; then the powder is ground again, the problem that when single grinding is used and hardening is performed in the later period of material mixing, zirconium oxide particles cannot be effectively ground is solved, the grain size of the zirconium oxide particles is decreased, the degree of uniform distribution of the zirconium oxide particles in the powder is improved, thereby improving the tensile strength and hardness of the tungsten-base alloy which is obtained after sintering.

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Inventors:
WEI SHIZHONG (CN)
XU LIUJIE (CN)
XIAO FANGNAO (CN)
PAN KUNMING (CN)
ZHOU YUCHENG (CN)
LI XIUQING (CN)
LI JIWEN (CN)
WANG XIRAN (CN)
WANG XIAODONG (CN)
ZHANG CHENG (CN)
CHEN CHONG (CN)
MAO FENG (CN)
XIONG MEI (CN)
ZHANG GUOSHANG (CN)
JIN DONGLIANG (CN)
Application Number:
PCT/CN2020/108558
Publication Date:
February 18, 2021
Filing Date:
August 12, 2020
Export Citation:
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Assignee:
UNIV HENAN SCIENCE & TECH (CN)
International Classes:
C22C1/05; B22F1/00; C22C1/10; C22C27/04; C22F1/08
Foreign References:
CN110358941A2019-10-22
CN105441765A2016-03-30
CN107604186A2018-01-19
US3696486A1972-10-10
CN105385986A2016-03-09
CN108277411A2018-07-13
CN108504916A2018-09-07
CN106801178A2017-06-06
CN106048360A2016-10-26
Attorney, Agent or Firm:
ZHENGZHOU RUIXIN INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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