The Effect of Mg Addition and Manufacturing Conditions on the Interfacial Reactions between Al and CNT in Al-CNT Pellets

作者：Lim Jung Kyu; Choi Soon Yool; Choe Kyong Hwan; Kim Sang Sub; Cho Gue Serb^*

来源：Journal of the Korean Institute of Metals and Materials, 2013, 51(5): 385-391.

DOI：10.3365/KJMM.2013.51.5.385

• Al-CNT
• Al4C3
• Mg contents
• N-2 atmosphere
• oxidation products

In the present study, Al-CNT pellets were investigated to understand the effect of Mg addition and manufacturing conditions on the interfacial reactions between Al and CNTs in Al-CNT pellets. The pellets were heated and held at 700 degrees C and 800 degrees C for 2 hours under nitrogen (N-2) atmosphere. To confirm the reactions between Al and CNT in the pellets under different manufacturing conditions, the microstructures were observed by optical microscopy (OM) and field emission scanning electro microscopy (FESEM). And, the composition and reaction phases were analyzed by energy dispersive X-ray spectroscory (EDXS) and X-ray diffractometry (XRD). The presence of oxidation products and Mg on the surface of Al powder in the pellets appeared to prevent the formation of Al4C3. But, Al4C3 reaction products were increased due to the high temperature of 800 degrees C, which produced a high amount of reduced aluminium and increased the reaction areas between Al and CNT. The Al-CNT pellets compacted under air atmosphere prohibited the reaction between Al and CNT because of the high amount of oxidation products, such as MgO and MgAl2O4.

• 出版日期2013-5