Synthesis of B_4C/AI-B_4C/TiB_2 Composite with a Two-Layer Structure

摘要

A two-layer structure composite based on B_4C/Al-B_4C/TiB_2 was prepared using hot pressing and infiltration aluminum in vacuum. The results showed that the B_4C porous layer in the two-layer preform looked like a three-dimensional network of interconnected capillaries which could promote the infiltration of liquid aluminum. In the B_4C/TiB_2 layer the TiB_2 dispersed homogenously in B_4C matrix. After infiltrating process the two-layer B_4C/Al-B_4C/TiB_2 composite with good interfacial bonding was obtained.