<p>Although the
various excellent properties and preparation methods of TiB<sub>2</sub>-based
composites have been extensively studied, their neutron shielding properties
have not received as much attention. In this article, the neutron shielding
performance of the previously prepared TiB<sub>2</sub>-Al composite will be studied.
The photo neutron source device was used to carry out neutron irradiation tests
on test samples with a thickness of 10 mm. The average thermal neutron
shielding rate of TiB<sub>2</sub>-based boron-containing composites is 17.55%,
and the shielding rate increases with the increase of BN content. The
macroscopic cross-section of thermal neutrons of the composites generally shows
a stable trend, and when the BN content is 10%, the thermal neutrons
macroscopic cross section reaches the maximum value of 7.58cm<sup>-1</sup>. With
the increase of the BN content, the thermal neutron fluence rate shows a
gradually decreasing trend.</p>