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, a melting point of high temperature, excellent chemical stability, and a good refining aluminum grain effect. This makes it suited 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 boronoxide 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 shape and provide good performance.

Technical Implementation Element

The invention discloses an aluminum diboride preparation method that includes the following steps: Adding the precursor reaction materials to the liquid phase, and obtaining 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 a uniformly blended suspension; wherein, the precursor reactant raw materials include aluminum powder and boron powder; the uniformly-mixed suspension is then frozen to set up, and the solvent is then removed by vacuum freezing-drying technique to obtain treated precursor reaction ingredients; the treated precursor material is then transferred into a tube of quartz;

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