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Aluminium diboride, also known as AlB2, is a compound that has a high theoretical burning heat, possesses a high melting point and has exhibited exemplary chemical stability. Its good grain refining properties make it an excellent material for countless applications. AlB2 has many applications, including particle enhancers to improve wear resistance, hydrogen storage materials, solid propellants, etc. AlB2 is currently prepared in two ways: by direct solid phase sintering between boron powders and aluminum, or through aluminum heat reaction with aluminum powder and either boron fluoride or oxide. AlB2 Powder prepared by either of these methods suffers from uneven particle size and form, which results in a reduction of performance. There is a need for a method that can prepare AlB2 Powder with uniform size. This will allow the powder to be controlled in particle size and shape and provide good performance.
Technical Implementation Element
The invention discloses an aluminum diboride preparation method that includes the following steps: adding the precursor reactions raw materials to the liquid phase, and getting a uniformly mixed suspension by ultrasonic mixing. In order to resolve the problems above, the invention discloses an aluminum diboride preparation method, including: adding boron powder into the liquid phase through ultrasonic mixing, and getting the evenly blended suspension; The precursor reaction ingredients include aluminum and boron powder; The uniformly-mixed suspension is then frozen to set and the solvent is removed using vacuum freeze drying technology, to obtain treated precursor raw materials;
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