| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 830148 | Materials & Design (1980-2015) | 2013 | 6 Pages |
A three-layer structure material, consisting of B4C/Al, B4C/TiB2 and B4C composites, was obtained using a two-step method for both hot pressing and aluminum infiltration in vacuum. The three-layer B4C/Al–B4C/TiB2–B4C composite showed good interfacial bonding. Before aluminum infiltration the B4C porous layer in the three-layer preform looked like a three-dimensional network of interconnected capillaries. The microstructures of both B4C/TiB2 and B4C layers showed no apparent changes before and/or after aluminum infiltration. The three-layer composite showed improved fracture toughness than that of B4C material and higher comprehensive hardness than that of B4C/Al material.
► A three-layer B4C-B4C/TiB2-B4C porous preform was synthesized by hot pressing. ► B4C porous layer looked like a network of interconnected capillaries. ► A three-layer B4C/Al-B4C/TiB2-B4C composite was prepared by vacuum infiltration. ► The composite showed improved fracture toughness compared to B4C material.
