Synthesis and Strength of Al_4C_3 Nanorods-Reinforced Al Matrix Composites by in-Situ Reaction during Powder Metallurgy Process from Al-Carton Nanotube System

摘要

In recent years, high energy ball milling (HEBM) became the most popular method to disperse CNT in Al matrix composites (AMCs). At the sacrifice of homogenous dispersion, structure damage of CNT was inevitable and considered as a critical problem that limited the strengthening effect in AMCs. Some studies suggested that small amount of reaction product (Al_4C_3) from damaged CNT and Al contrarily contributed to the strengthening effect and the resulted enhancement in mechanical properties of CNT/A1 composites. Herein, a novel idea is put forward to synthesize Al_4C_3/Al composites by completely trarisforming CNT to in-situ Al_4C_3 nanorods for designing high-strength AMCs.