Effect of excimer laser surface melting on the corrosion performance of a SiCp/Al metal matrix composite

D. S. Qian, X. L. Zhong, T. Hashimoto, Y. Z. Yan, Z. Liu

Research output: Contribution to journalArticlepeer-review

Abstract

Excimer laser surface melting (LSM) was performed to improve the corrosion resistance of the SiCp/AA2124 metal matrix composite (MMC). Corrosion evaluation of the MMCs showed evident improvement of the corrosion resistance after LSM, which was mainly attributed to the formation of a highly homogeneous surface layer with the dissolution of intermetallic particles and the redistribution of the alloying elements, as well as Si and C resulted from the decomposition of SiC particles. The elimination of micro-pores and micro-crevices introduced by the SiC particles after LSM also contributed to the improved corrosion resistance of the MMC.
Original languageEnglish
Pages (from-to)280-291
Number of pages11
JournalApplied Surface Science
Volume330
DOIs
Publication statusPublished - Mar 2015

Keywords

  • Metal matrix composite; Laser surface melting; Polarization; EIS; TEM

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