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- 저자 : Simone P. A. da Paz (검색결과 1 건)
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Cast Aluminum Surface Reinforced with Carbon Nanotube via Solubilization Treatment
Paulo R. O. Brito,Cristhian R. L. Loayza,Mário E. S. Sousa,Eduardo M. Braga,Rômulo S. Angélica,Simone P. A. da Paz,Marcos A. L. Reis 대한금속·재료학회 2022 METALS AND MATERIALS International Vol.28 No.3
Carbon nanotubes (CNTs) are noteworthy, as they reinforce the metallic matrix, due to mechanical properties, such asthe ~ 1.0 TPa Young module. To improve the maintenance of the commercially pure aluminum surface, multi-walled carbonnanotubes were incorporated into the aluminum surface with heat treatment by solid solubilization, in order to improvethe surface properties of aluminum. The aluminum samples were chemically attacked for 30, 60 and 120 s and placed in acontainer with CNTs, being subjected to a temperature of 640 °C for 1 h. Then, the roughness was evaluated by a roughnessmeter for morphology in the scanning electron microscopy. An intensity of aggregation of CNTs was evaluated by XRD, andthe Raman Spectra has evaluated the transfer of charge to the matrix. Microhardness was performed to evaluate the influenceof the incorporation of CNTs in the matrix. The results obtained show that the incorporation of CNTs in the aluminummatrix increases the hardness in approximately 20% of the surface, in comparison with the control sample. The process ofincorporating CNTs into the aluminum matrix by solubilization is a promising, simple and inexpensive alternative to improvethe durability of the aluminum surface.
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