New Radiation Protection Material: Tungsten Carbide Reinforced Aluminum Matrix Composite Material

Tungsten carbide reinforced aluminum matrix composite material is a new radiation protection material. Its γ-ray and neutron shielding performance is more excellent than lead. It also has the advantages of high specific stiffness, high specific strength, excellent plasticity, and high stability. More importantly, it is environmentally friendly. So, this new type of radiation protection material is widely used in medical shielding and other fields.

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Whether the stirring casting method, reaction generation method and powder metallurgy method is used in the preparation of tungsten carbide reinforced aluminum matrix composite material, the high density and hardness of tungsten carbide reinforcement will settle and segregate in the aluminum matrix during the mixing process. Therefore, the reinforcement is unevenly distributed, which affects the mechanical properties and corrosion resistance of the material. Studies have shown that the uniformity of the mixture can be improved by continuously optimizing the mechanical mixing process parameters. However, the applicability of this method has limitations, and it still cannot effectively solve the problems such as the settlement of high-density tungsten carbide particles. Experts have integrated the advantages of the coating method in the preparation process of diamond tools and nuclear fuel components. First, the tungsten carbide particles are coated, and then mixed with 2024Al. The prepared tungsten carbide reinforced aluminum matrix composite reinforcement has a uniform distribution and excellent moldability as a new radiation protection material.

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