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Preparation technology for titanium-suboxide conductive ceramic electrode

A conductive ceramic and titanium oxide technology, which is applied in the field of preparation of titanium oxide bulk material conductive ceramic electrodes, can solve problems such as difficulty in obtaining ultra-fine titanium powder, achieve good chemical reactivity, shorten production cycle, and improve production The effect of efficiency

Inactive Publication Date: 2014-09-03
CHANGSHA WORUI NEW MATERIAL TECH
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Problems solved by technology

However, due to the active wave of titanium metal, it is easy to react with oxygen, and it is difficult to obtain ultra-fine titanium powder. Therefore, the time for the preparation of bulk materials in the prior art is as long as more than 3 days.

Method used

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Embodiment Construction

[0017] The present invention is further elaborated as follows below.

[0018] A preparation process of a titanium oxide conductive ceramic electrode, comprising the following steps:

[0019] Step 1: Weigh 333 grams and 167 grams of titanium dioxide powder and titanium hydride powder respectively on an electronic balance, wherein the particle size of titanium dioxide powder is 1-2 μm, and the particle size of titanium hydride powder is less than 10 μm.

[0020] The second step: mix the above-mentioned titanium dioxide powder and titanium hydride powder with a V-type mixer, make them fully mixed, and obtain a uniform mixture;

[0021] Step 3: Put the mixture into a steel mold with a diameter of 40 mm for pre-compression, and the pre-compression pressure is 80 MPa to obtain a block material;

[0022] Step 4: Carry out vacuum dehydrogenation treatment on the bulk material in a vacuum furnace, and the temperature is controlled at 650°C;

[0023] Step 5: Seal the bulk material aft...

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Abstract

A preparation technology for a titanium-suboxide conductive ceramic electrode comprises the following steps: (1) according to a reaction equation to respectively weigh a titanium dioxide powder and a titanium hydride powder; (2) fully mixing the weight titanium dioxide powder and titanium hydride powder, so as to obtain a uniform mixture; (3) putting the mixture into a mold and performing precompression, so as to prepare a blocky material; (4) performing vacuum dehydrogenation processing on the blocky material; (5) performing hydrostatic-pressure repressing; and (6) performing high-temperature reaction and sintering, and cooling to obtain the blocky titanium-suboxide conductive ceramic electrode. By employing the in-site dehydrogenation technology, the obtained titanium powder is high in purity, the chemical reaction activity is good, the powder granularity is controllable, and the preparation period of the titanium-suboxide conductive ceramic electrode is substantially shortened.

Description

technical field [0001] The invention relates to a preparation method of conductive ceramics, in particular to a preparation process of a conductive ceramic electrode made of titanium oxide bulk material. Background technique [0002] Has Ti n o 2n-1 Titanium oxide with a general chemical formula has unique physical, chemical and electrochemical properties, including excellent conductivity, its conductivity is 1500S / cm, much higher than that of graphite; strong chemical stability, strong acid and alkali resistance; wide Electrochemically stable potential window, the stable allenvir window in aqueous solution is above 3.0V. It has broad application prospects in the following fields. In the field of metallurgy, it can be used as an electrode for metal electrolysis production. It does not passivate and does not corrode under high current density and high acid conditions; in the field of electroplating, due to its high hydrogen and oxygen evolution overpotential, it is corrosio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/46C04B35/622
Inventor 吴宏刘锋刘志斌
Owner CHANGSHA WORUI NEW MATERIAL TECH
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