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http://dx.doi.org/10.3740/MRSK.2009.19.4.207

Convenient Aluminizing Process of Steel by Using Al-Ti Mixed Powder Slurry  

Lee, Young-Ki (Department of Semiconductor and Electronics Engineering, Uiduk University)
Kim, Jung-Yeul (Department of Semiconductor and Electronics Engineering, Uiduk University)
Lee, You-Kee (Department of Semiconductor and Electronics Engineering, Uiduk University)
Publication Information
Korean Journal of Materials Research / v.19, no.4, 2009 , pp. 207-211 More about this Journal
Abstract
In this study, we attempted to develop a convenient aluminizing process, using Al-Ti mixed slurry as an aluminum source, to control the Al content of the aluminized layer as a result of a one-step process and can be widely adopted for coating complex-shaped components. The aluminizing process was carried out by the heat treatment on disc and rod shaped S45C steel substrates with Al-Ti mixed slurries that were composed of various mixed ratios (wt%) of Al and Ti powders. The surface of the resultant aluminized layer was relatively smooth with no obvious cracks. The aluminized layers mainly contain an Fe-Al compound as the bulk phase. However, the Al concentration and the thickness of the aluminized layer gradually decrease as the Ti proportion among Al-Ti mixed slurries increases. It has also been shown that the Al-Ti compound layer, which formed on the substrate during heat treatment, easily separates from the substrate. In addition, the incorporation of Ti into the substrate surface during heat treatment was not observed.
Keywords
aluminizing process; Al-Ti mixed powder slurry; aluminized layer; Fe-Al compound; Al-Ti compound;
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  • Reference
1 G. W. Goward and D. H. Boone, Oxid. Met., 3, 475 (1971)   DOI
2 H. Glasbrenner, E. Nold and Z. Voss, J. Nuclear Mater., 249, 39 (1997)   DOI   ScienceOn
3 N. Giordano, S. Freno, R. Quagliata, S. Cavallaro and P. Carbonaro, J. Electrochem. Soc., 135, 910 (1988)   DOI
4 P. Shen, D. Gan and C. C. Lin, Mater. Sci. Eng., 78, 171 (1986)   DOI   ScienceOn
5 P. Tomaszewicz and G. R. Wallwork, Rev. High Temp. Mater., 4, 75 (1978)
6 P. F. Tortorelli and J. H. DeVan, Mater. Sci. Eng., 153, 573 (1992)   DOI   ScienceOn
7 H. M. Soliman, M. E. Abd and El-Azim, J. Mater. Sci. Technol., 13, 462 (1997)
8 S. Tsuji, J. Jap. Ins. Metals, 59, 726 (1995)   DOI
9 B. M. Warnes and D. C. Punola, Surf. Coat. Technol., 94, 1 (1997)   DOI   ScienceOn
10 J. E. Indacochea, I. Bloom, M. Krumpelt and T. G. Benjamin, J. Mater. Res., 13, 1834 (1998). Fig. 6. Al concentration and thickness of the aluminized layer for samples treated with the various Al:Ti ratio slurries. The aluminizing was carried out in vacuum atmosphere (8×10-4 Pa) at 950 oC for 1 h   DOI   ScienceOn
11 J. R. Selman and H. C. Maru, Physical Chemistry and Electrochemistry of Alkali Carbonate Melts with Special Reference to the Molten-Carbonate Fuel Cell, p.163, Plenum Press (1981)
12 A. B. Smith, A. Kempster and J. Smith, Surf. Coat. Technol., 120, 112 (1999)   DOI   ScienceOn