Multiwalled Carbon Nanotubes-TiB_2-Ni Composite: Microstructure and Mechanical Properties

摘要

Carbon nanotubes (CNTs)-TiB_2-Ni composites with improved mechanical properties were fabricated by hot pressing at 1600℃/30 MPa/1 h. The effects of CNTs content on the microstructural feature and mechanical properties were investigated. The incorporation of multiwall carbon nanotubes (MWNTs) could significantly improve the mechanical properties of the TiB_2 cermet matrix composites. The main toughening mechanisms include CNTs pulling-out, crack deflexion, bridging, and CNTs rupture.