The Invention Relates to a Preparation Method and a Process of Aluminum Diboride Powder

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Background Technology

Aluminium diboride, also known as AlB2, is characterized with high theoretical burning heat, high melting temperature, good chemical stability, and a good effect on refining aluminum grains. This makes it a great candidate for many 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 powder, aluminum powder, and boron oxidation or borofluoride, or through aluminum heat reaction. AlB2 Powder prepared by either of these methods suffers from uneven particle size and form, resulting in a reduction of performance. There is a need for a method that can prepare AlB2 Powder with standardized size. This will allow the powder to be uniform in size, and its performance to be improved.

Technical Implementation Element

In this application, the technical problem is to develop an aluminum diboride and its preparation method that can control particle size and shape and ensure good performance. To solve the problems above, the invention discloses an aluminum diboride preparation method, including: adding boron powder into the liquid phase of the solution, and getting a uniformly blended suspension through ultrasonic mixer; Wherein the precursor reactant raw materials include aluminum powder and boron powder; The uniformly-mixed suspension is frozen until it sets, and the solvent is then removed by vacuum freezing-drying technique to obtain treated precursor raw materials;

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