Excellent ultrasonic absorption ability of carbon-nanotube-reinforced bulk metallic glass composites

Abstract

Zr 52.5 Cu 17.9 Ni 14.6 Al 10 Ti 5 bulk metallic glass composites (BMGCs) containing carbon nanotubes (CNTs) are found to have a strong ultrasonic wave absorption ability. Ultrasonic attenuation coefficients of Zr-based BMGCs increase dramatically with increasing volume fraction of CNTs. The excellent ultrasonic wave absorption ability is attributed mainly to the multiscattering caused by the CNTs and ZrC phase dispersing randomly in the glass matrix.