TY - JOUR
T1 - Carbohydrate biopolymer for corrosion control of 6061 Al-alloy and 6061Aluminum-15%(v) SiC(P) composite—Green approach
AU - B.P, Charitha
AU - Rao, Padmalatha
PY - 2017/7/15
Y1 - 2017/7/15
N2 - The acid corrosion control of 6061Aluminum alloy and 6061Al-15%(v) SiC(P) composite material (Al-CM) was carried by using inulin – a carbohydrate polymer as a green inhibitor. Potentiodynamic polarization (PDP) and Electrochemical Impedance Spectroscopy (EIS) techniques were adopted. Concentration of inulin was in the range of 0.2 gL−1–1.0 gL−1, and studies were done in the temperature range of 303–323 K. The adsorption of inhibitor on the surface of Al alloy and Al-CM was confirmed by physical techniques such as Scanning electron microscopy (SEM), energy-dispersive X-Ray analysis (EDX), and atomic force microscopy (AFM) analysis. The studies showed that inhibition efficiency of inhibitor increased with increase in concentrations of inulin and decreased with increase in temperature. The adsorption of inulin on metal surface obeyed Langmuir adsorption isotherm through physical adsorption on both alloy and on Al-CM. Results obtained from potentiodynamic polarization method and electrochemical impedance spectroscopic methods were in good agreement with one another.
AB - The acid corrosion control of 6061Aluminum alloy and 6061Al-15%(v) SiC(P) composite material (Al-CM) was carried by using inulin – a carbohydrate polymer as a green inhibitor. Potentiodynamic polarization (PDP) and Electrochemical Impedance Spectroscopy (EIS) techniques were adopted. Concentration of inulin was in the range of 0.2 gL−1–1.0 gL−1, and studies were done in the temperature range of 303–323 K. The adsorption of inhibitor on the surface of Al alloy and Al-CM was confirmed by physical techniques such as Scanning electron microscopy (SEM), energy-dispersive X-Ray analysis (EDX), and atomic force microscopy (AFM) analysis. The studies showed that inhibition efficiency of inhibitor increased with increase in concentrations of inulin and decreased with increase in temperature. The adsorption of inulin on metal surface obeyed Langmuir adsorption isotherm through physical adsorption on both alloy and on Al-CM. Results obtained from potentiodynamic polarization method and electrochemical impedance spectroscopic methods were in good agreement with one another.
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U2 - 10.1016/j.carbpol.2017.03.098
DO - 10.1016/j.carbpol.2017.03.098
M3 - Article
AN - SCOPUS:85016641897
SN - 0144-8617
VL - 168
SP - 337
EP - 345
JO - Carbohydrate Polymers
JF - Carbohydrate Polymers
ER -