Corrosion inhibition of 6061 Al-15 vol. pct. SiC(p) composite and its base alloy in a mixture of sulphuric acid and hydrochloric acid by 4-(N,N-dimethyl amino) benzaldehyde thiosemicarbazone

被引：60

作者：

Pinto, Geetha Mable ^{[1
]}

Nayak, Jagannath ^{[2
]}

Shetty, A. Nityananda ^{[1
]}

机构：

[1] Natl Inst Technol Karnataka, Dept Chem, Mangalore 575025, Karnataka, India

[2] Natl Inst Technol Karnataka, Dept Met & Mat Engn, Srinivasnagar 575025, Karnataka, India

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2011年 / 125卷 / 03期

关键词：

Alloys; Electrochemical techniques; Adsorption; Corrosion; ALUMINUM-MATRIX COMPOSITES; MILD-STEEL; CHLORIDE; REINFORCEMENT; BEHAVIOR; DERIVATIVES;

D O I：

10.1016/j.matchemphys.2010.10.006

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The corrosion inhibition characteristics of 4-(N,N-dimethylamino) benzaldehyde thiosemicarbazone (DMABT) on the corrosion behavior of 6061 Al-15 vol. pct. SiC(p) composite and its base alloy were studied at different temperatures in acid mixture medium containing varying concentrations of hydrochloric acid and sulphuric acid using Tafel extrapolation technique and ac impedance spectroscopy (EIS). The effect of inhibitor concentration, temperature and concentration of the acid mixture media on the inhibitor action was investigated. It was found that inhibition efficiencies increase with the increase in inhibitor concentration, but decrease with the increase in temperature and with the increase in concentration of the acid media. Thermodynamic parameters for dissolution process were determined. The adsorption of DMABT on both the composite and base alloy was found to be through physisorption obeying Freundlich adsorption isotherm. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：628 / 640

页数：13

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