(南昌航空大學(xué) 航空制造工程學(xué)院，南昌 330063)
摘 要: 采用攪拌摩擦加工法制備不同含量多壁碳納米管鎂基復(fù)合材料(MWCNTs/Mg)，并對該復(fù)合材料的顯微結(jié)構(gòu)和阻尼性能進行分析。結(jié)果表明：MWCNTs/Mg復(fù)合材料的高溫阻尼性能較基體的高溫阻尼性能有一定程度的提高；MWCNTs的添加量越大，MWCNTs/Mg復(fù)合材料的阻尼性能增加越大；MWCNTs/Mg復(fù)合材料的阻 尼—溫度曲線出現(xiàn)了兩個內(nèi)耗峰。MWCNTs/Mg復(fù)合材料阻尼性能受頻率影響隨溫度區(qū)間的變化而不同。
關(guān)鍵字: MWCNTs/Mg復(fù)合材料；碳納米管；攪拌摩擦加工；阻尼性能
（School of Aeronautical Manufacturing and Engineering, Nanchang Hangkong University,
Nanchang 330063, China）
Abstract:The multi-walled carbon nanotubes (MWCNTs) reinforced Mg matrix composites were prepared by friction stir processing (FSP). The microstructure and damping properties of the composites were investigated. The results show that the high temperature damping capacity of MWCNTs/Mg composite is better than that of the base metal. The larger the amounts of MWCNTs adds into the matrix, the higher the damping capacities of the MWCNTs/Mg composites are. Furthermore, there are two internal friction peaks in the damping—temperature curves of the MWCNTs/Mg composites. The damping capacities of MWCNTs/Mg composites materials are affected by frequency variation with change of the temperature ranges.
Key words: MWCNTs/Mg composites; multi-walled carbon nanotubes; friction stir processing; damping capacity
