Rare earth application in sealing anodized AL-based metal matrix composites

J Mater Sci Technol ›› 2001, Vol. 17 ›› Issue (02): 283-284.

• Research Articles • Previous Articles Next Articles

Rare earth application in sealing anodized AL-based metal matrix composites

Xingwen YU, Chunan CAO, Chuanwei YAN, Zhiming YAO

State Key Laboratory for Corrosion and Protection, Institute of Corrosion and Protection of Metals, Chinese Academy of Science, Shenyang 110015, China

Received:1999-11-19 Revised:2000-01-25 Online:2001-03-28 Published:2009-10-10
Contact: Xingwen YU

Abstract

Abstract: A new method for corrosion protection of Al-based metal matrix composites (MMC) was developed using two-step process, which involves anodizing in H2SO4 solution and sealing in rare earth solution. Corrosion resistance of the treated surface was evaluated with polarization curves. The results showed that the effect of the protection using rare earth sealing is equivalent to that using chromate sealing for Al6061/SiCp. The rare earth metal salt can be an alternative to the toxic chromate for sealing anodized Al MMC.

Key words:

Xingwen YU, Chunan CAO, Chuanwei YAN, Zhiming YAO. Rare earth application in sealing anodized AL-based metal matrix composites[J]. J Mater Sci Technol, 2001, 17(02): 283-284.

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Rare earth application in sealing anodized AL-based metal matrix composites

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