• A study on the damping capacity of BaTiO3-reinforced Al-matrix composites

• # Fulltext

https://www.ias.ac.in/article/fulltext/boms/039/02/0463-0467

• # Keywords

BaTiO$_3$; Al-matrix composites; damping capacity; ferroelastic domain damping; mechanical property.

• # Abstract

To study the damping capacity of BaTiO$_3$/Al composites, Al composites reinforced with BaTiO$_3$ powder (average grain sizes: 100 and 1000 nm) were fabricated by the hot-pressing sintering method. The damping properties of pure Al and BaTiO$_3$/Al composites were investigated and compared based on the dynamic mechanical analysis over a wide range of temperatures (50–285$^{\circ}$C). Compared with pure Al matrix, 1000 nm BaTiO$_3$/Al composites with 5 and 10% mass fractions of BaTiO$_3$ exhibited better damping capacity. For 100 nm BaTiO$_3$/Al composite, its damping capacity is slightly higher than that of pure Al below 145$^{\circ}$C, while it becomes lower above this degree. The damping capacity enhancement of BaTiO$_3$/Al composites can be explained by the ferroelastic domain damping. Furthermore, 5 and 10% BaTiO$_3$/Al composites have higher bending strength and hardness than pure Al sample.

• # Author Affiliations

1. Department of Materials Science and Engineering, Henan University of Technology, Zhengzhou 450001, China

• # Bulletin of Materials Science

Current Issue
Volume 42 | Issue 6
December 2019

• # Editorial Note on Continuous Article Publication

Posted on July 25, 2019