Preparation process of transition metal boride and uses thereof
AssigneeShenzhen Sunxing Light Alloys Materials Co., Ltd.
InventorsXuemin Chen, Jun Yang, Zhihong Li, Weiping Wu
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Abstract
The invention provides a preparation process of transition metal boride, comprising the following steps: A) aluminum is put in a reactor, inert gas is fed into the reactor after evacuation, the reactor is heated up to 700 to 800° C. and then added with dry potassium fluoborate or sodium fluoborate, monomer boron and cryolite are generated by rapid stirring and reaction for 4 to 6 hours, and the molten liquid at the upper layer is sucked out and the monomer boron is obtained by means of separation; and B) the obtained monomer boron is added with transition metal for reaction at the temperature from 1800 to 2200° C. in order to generate corresponding transition metal boride.
Claims2
A preparation process of transition metal boride, comprising the steps of:
- A) placing aluminum in a reactor,
- B) evacuating the reactor containing the aluminum;
- C) feeding inert gas into the reactor after the evacuation,
- D) heating the reactor to 700 to 800° C.;
- E) adding dry potassium fluoborate or sodium fluoborate to the reactor containing the inert gas and the aluminum,
- F) generating monomer boron and cryolite by rapid stirring and reaction for 4 to 6 hours,
- G) removing molten liquid at the upper layer so as to obtain the monomer boron by separation;
- and
- H) adding the obtained monomer boron with transition metal selected from chromium or vanadium for reaction at a temperature from 1800 to 2200° C. in order to generate corresponding chromium or vanadium boride.
Dependencies are inferred from the claim text.