The Influence of La on the Corrosion Resistance of Hot-Dip Aluminized Steel

Abstract:

The influence of the content of rare-earth La on the microstructure and corrosion-resistance of hot-dipped aluminum was studied in this paper .The results show that ,under the same technology conditions, the thickness of hot-dipped aluminizing layer by adding the appropriate content of rare-earth La is about 2～3 times as much as that without rare-earth La, and the microstructure of hot-dipped aluminizing layer has also greatly changed ,and a great deal of phase Fe3Al was precipitated along the boundary of a phase. The corrosion resistance of the hot-dipped layer with rare-earth La is greatly increased.

• Periodical: Materials Science Forum (Volumes 475-479)
• Pages: 3851-3854
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.475-479.3851
• Online since: January 2005
• Authors: Jiu ba Wen, Wei Zhang, Xiao Yuan Li, Quan An Li
• Keywords: Aluminium Alloy, Corrosion Resistance, Hot-Dipped Aluminum, Rare Earth (RE)

References

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[4] X.Y. Li, J.B. Wen, Q. Li. Journal of Chinese Society for Corrosion and Protection, (in Chinese), Vol. 15(2003), p.272.

[5] X.Y. Li, The effect of La、Y、rich La rare-earth on corrosion resistance of hot dipped aluminum. Henan University of Science and Technology master degree dissertation, Luoyang, 2004. Fig. 3 The relationsgip between mass loss of samples and time 0.

05.

1.

15.

2.

25.

3.

35.

4.

45.

5 0 50 100 150 200 250 300 350 400 Ti me / h Mass loss /g pur e Al.

1%La.

3%La.

5%La.

8%La.

[1] 0%La.