Nanodynamic mechanical behavior of graphene nanoplatelet-reinforced tantalum carbide

作者：Nieto Andy; Lahiri Debrupa; Agarwal Arvind^*

来源：Scripta Materialia, 2013, 69(9): 678-681.

DOI：10.1016/j.scriptamat.2013.07.030

• TaC
• NanoDMA
• Graphene nanoplatelet
• Damping
• Tan delta

Nanodynamic mechanical analysis (nanoDMA) is performed on spark plasma sintered tantalum carbide composites reinforced with graphene nanoplatelets (GNPs). The addition of GNPs enhances damping (tan delta) at 25-100 Hz frequencies by up to 300%. It also improves damping behavior through energy-dissipating mechanisms, such as GNP bending, kinking and sliding. A model for correlating improvement in the damping behavior with the fracture toughness is presented. GNP energy-dissipating mechanisms are most effective in improving damping behavior when GNPs are dispersed uniformly.

• 出版日期2013-11