Improvement the Corrosion Resistance of Aluminum Bronze Alloy (Cu-7.7wt%Al) Reinforced by Al2O3 and TiO2 Nanoparticles

2nd International Conference on Sustainable Engineering Techniques

工业技术（总论）

Ajeel, Sami A.^1 ; Yaseen, Rabiha S.^1 ; Keqal, Asaad^1

Department of Production Engineering and Metallurgy, University of Technology, Baghdad, Iraq^1

关键词: 3.5% nacl solutions;    Aluminum bronze alloy;    Copper base alloys;    Corrosion behavior;    Dendritic structures;    Mechanical stirring;    Stir casting method;    Tafel extrapolations;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/518/3/032046/pdf
DOI  :  10.1088/1757-899X/518/3/032046

学科分类：工业工程学

来源: IOP

【 摘 要 】

This work involves study of corrosion behavior of Aluminum bronze alloy (Cu-7.7wt%Al) reinforced by both nanoparticles of Al2O3 and TiO2 with different percentage (0.6, 1.1, 1.5 and 3 weight percent). Composite materials are prepared by stir casting method with mechanical stirring and magnetic field from induction furnace that used in this work. The copper base alloy reinforced samples were tested to investigate corrosion behavior, by using Tafel extrapolation technique. The Scanning Electron Microscope was used to study the effect of Al2O3 and TiO2 nanoparticles on the topography of surfaces. The results showed that the microstructure of reinforced alloy is composed of a fine dendritic structure of α Cu phase and CuAl2 as intermetallic compound. The samples reinforced with 3wt% of Al2O3 and TiO2 have a lower corrosion rate compared to nano-composites reinforced with 1.5wt% of Al2O3 and TiO2. While the nano-composites reinforced with 1.5wt% of Al2O3 and TiO2 has lower corrosion rate compared to the Cu-Al matrix in 3.5%NaCl solution at ambient temperature.