Improving tribological and corrosion properties of Aluminum-CNT surface nano composite fabricated via Friction Stir Processing
Publish place: 3rd Iran International Aluminium Conference (IIAC2014)
Publish Year: 1393
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
IIAC03_050
تاریخ نمایه سازی: 9 فروردین 1395
Abstract:
Poor wear resistance and low hardness of Aluminum alloy 1200 (AA-1200) limits its industrial application.In this research, Aluminum-Carbon Nano Tube (Al/CNT) surface nano composite was fabricated via Friction Stir Processing (FSP) technique. Microstructural studies illustrated that with the increase of CNT contents from 4 to 18vol.% the grain size decreased from 30±5μm in the substrate to 10±2μm in the processed zone. Microhardness evaluations indicated that dispersed CNT in the composite layer increased the hardness up to 70% of the base metal. Potentiodynamic polarization tests revealed that with the increase of CNT contents, corrosion resistance decreased, while wear resistance improved with increasing of CNT content. SEM studies showed a relatively uniform distribution of CNT in the matrix with 10vol.% of CNT, but agglomeration of CNT occurs with higher contents of CNT.
Authors
e Montazerozohour
Department of mining & metallurgy, University of Yazd, Yazd, 89195-741, Iran
m Mosallaee
Department of mining & metallurgy, University of Yazd, Yazd, 89195-741, Iran
s Ghasemi
Department of mining & metallurgy, University of Yazd, Yazd, 89195-741, Iran
a Mashreghi
Department of mining & metallurgy, University of Yazd, Yazd, 89195-741, Iran
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