Corrosion Behavior of SiCp/2024 Al Matrix Composites in 3.5 wt pct Sodium Chloride

J Mater Sci Technol ›› 2002, Vol. 18 ›› Issue (03): 261-263.

• Research Articles • Previous Articles Next Articles

Corrosion Behavior of SiCp/2024 Al Matrix Composites in 3.5 wt pct Sodium Chloride

Chunlin HE, Changsheng LIU, Fengqin LI, Qingkui CAI Zhiming SHI, Liqing CHEN, Jing BI

School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China...

Received:1900-01-01 Revised:1900-01-01 Online:2002-05-28 Published:2009-10-10
Contact: Chunlin HE

Abstract

Abstract: The influences of volume fraction and particle size of SiC particulate reinforcements on the corrosion characteristics of SiCp/2024 Al metal matrix composites in aerated 3.5 wt pct NaCl aqueous solution were investigated. The electrochemical behavior was investigated by potentiodynamic polarization and electrochemical impedance spectroscopy, the general corrosion behavior of the composites was studied further by immersion tests. The results showed that pitting susceptibility was about the same for the composites and the alloy. The corrosion potentials were also independent of SiC phase. The corrosion resistance for the composites decreased as the volume fraction increased or particle size decreased.

Key words: SiCp/2024Al matrix composites, Corrosion, Pitting

Chunlin HE, Changsheng LIU, Fengqin LI, Qingkui CAI Zhiming SHI, Liqing CHEN, Jing BI. Corrosion Behavior of SiCp/2024 Al Matrix Composites in 3.5 wt pct Sodium Chloride[J]. J Mater Sci Technol, 2002, 18(03): 261-263.

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Corrosion Behavior of SiCp/2024 Al Matrix Composites in 3.5 wt pct Sodium Chloride

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