A kind of preparation method of gadolinium zirconate powder containing pyrochlore phase
A technology related to zirconic acid and pyrochlore, applied in chemical instruments and methods, zirconium compounds, inorganic chemistry, etc., can solve the problems of complex process and high cost, and achieve uniform microstructure, good compactness, and excellent thermal performance Effect
Inactive Publication Date: 2017-07-21
SOUTHWEAT UNIV OF SCI & TECH
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Problems solved by technology
[0008] Aiming at the problems of high cost and complex process of the existing pyrochlore-phase gadolinium zirconate material preparation method, the present invention provides a kind of pyrochlore-containing pyrochlore phase prepared by using gadolinium oxide and zirconia as raw materials and adopting a controllable detonation loading device. Lithium phase gadolinium zirconate powder method
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Embodiment 1
[0028] figure 1 It is the synthetic device of embodiment 1 of the present invention, and it comprises detonator 1, upper cover plate 2, charge cartridge 3, lower cover plate 4, momentum block 5, copper flying sheet 6, raw material box 7 and stainless steel base 8, charge cartridge 3. There are an upper cover plate 2 and a lower cover plate 4. The detonator 1 is installed on the upper cover plate 2, and the copper flying piece 6 is installed on the lower cover plate 4; the lower part of the lower cover plate 4 is a raw material box 7, and the left and right sides of the raw material box 7 are respectively It is a momentum block 5; the raw material box 7 bottom is a stainless steel base 8; the detonator 1 is connected to an electronic detonation switch 9.
[0029] A preparation method of pyrochlore-phase gadolinium zirconate powder, comprising the following steps:
[0030] ① Mix gadolinia with a mass percentage of 60% and zirconia powder with a content of 40% (the purity of gad...
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Abstract
The invention discloses a preparation method of a pyrochlore phase-containing gadolinium zirconate powder, which belongs to the field of chemical synthesis. The preparation method of the pyrochlore phase-containing gadolinium zirconate powder comprises the following steps: mixing gadolinium oxide and zirconia powder, fully grinding them into mixture particles, and driving the high-speed movement of flyers through explosive loading to apply an instantaneous application to the mixture particles. At high temperature and high pressure, the powder raw material undergoes a solid-phase reaction, and after the reaction is completed, a pyrochlore-phase gadolinium zirconate powder is obtained. By adopting the preparation method of the present invention, a large amount of cheap gadolinium zirconate powder material can be obtained. The pyrochlore phase-containing gadolinium zirconate powder material prepared by the invention has uniform microstructure, good compactness and excellent thermal performance, and can be widely used in catalysts, solid electrolytes, curing of high-level radioactive wastes, and high-temperature thermal barrier coatings. layer materials, etc.
Description
technical field [0001] The invention relates to the field of chemical synthesis, in particular to a preparation method of gadolinium zirconate powder containing pyrochlore phase. Background technique [0002] Nuclear technology has been rapidly developed and widely used since its birth. While using nuclear technology, it also brings troublesome radioactive problems. How to safely and effectively treat and dispose of these radioactive wastes has become a very challenging science and technology in the world. technical problem. [0003] In the 1980s, it was discovered that the substances forming the pyrochlore phase have good ion conductivity, and are a promising solid electrolyte material for high-temperature fuel cells. [0004] Gadolinium zirconate is a functional material with excellent performance. Because of its excellent physical and chemical properties, it is widely used in catalysts, solid electrolytes, solidification of high-level radioactive waste, and high-temperat...
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IPC IPC(8): C01G25/00
Inventor 卢喜瑞舒小艳易发成丁艺毛雪丽樊龙段涛朱伟东
Owner SOUTHWEAT UNIV OF SCI & TECH