Effect of nickel addition on the microstructure and corrosion resistance properties of porous alumina composites shaped with sugarcane bagasse pore-forming agent

1st International Postgraduate Conference on Mechanical Engineering

工业技术（总论）;机械制造

Dele-Afolabi, T.T.^1 ; Hanim, M A Azmah^1 ; Norkhairunnisa, M.^2 ; Sobri, S.^3 ; Calin, R.^4 ; Ojo-Kupoluyi, O.J.^1

Department of Mechanical and Manufacturing Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang Selangor

43400 UPM, Malaysia^1

Department of Aerospace Engineering, Faculty of Engineering, Universiti Putra Malaysia, UPM Serdang Selangor

43400, Malaysia^2

Department of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, UPM Serdang Selangor

43400, Malaysia^3

Department of Metallurgy and Materials Science Engineering, Faculty of Engineering, Kirikkale University, Turkey^4

关键词: Alkali solutions;    Heat treatment process;    Nickel addition;    Nickel aluminate;    Pore-forming agents;    Porous alumina;    Resistance properties;    Sugar-cane bagasse;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/469/1/012019/pdf
DOI  :  10.1088/1757-899X/469/1/012019

学科分类：工业工程学

来源: IOP

【 摘 要 】

In this study, the effect of nickel (Ni) addition on the microstructure and corrosion resistance properties of porous alumina (Al2O3) composites shaped with sugarcane bagasse pore-forming agent were evaluated. Plain and Ni-reinforced porous alumina sampels (Al2O3-xNi-RH; x = 2, 4, 6 and 8wt%) were prepared using the powder metallurgy method. Experimental results showed that the porosity (50.4-57.1vol%) and the pore size (62-109μm) of the porous alumina composites increased with rising content of Ni reinforcement. The XRD results showed that the Al2O3 matrix and Ni reinforcement reacted during the heat treatment process to produce nickel aluminate (NiAl2O4) spinel. Corrosion resistance results showed that the porous alumina composites exhibited better chemical stability in strong alkali solution as compared with strong acid solution.