Reduced Graphene Oxide Reinforces Boron Carbide with High-Pressure and High-Temperature Sintering.

ABSTRACT: Introducing a second phase has been an effective way to solve the brittleness of boron carbide (B₄C) for its application. Though reduced graphene oxide (rGO) is an ideal candidate for reinforcing the B₄C duo's two-dimensional structure and excellent mechanical properties, the toughness is less than 6 MPa·m^1/2, or the hardness is lower than 30 GPa in B₄C-graphene composites. A barrier to enhancing toughness is the weak interface strength between rGO and B₄C, which limits the bridging and pull-out toughening effects of rGO. In this work, internal stress was introduced using a high-pressure and high-temperature (HPHT) method with B₄C-rGO composites. The optimal hardness and toughness values for the B₄C-2 vol%

SUBMITTER: Wang X 

PROVIDER: S-EPMC11643588 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature