Hostname: page-component-586b7cd67f-dlnhk Total loading time: 0 Render date: 2024-11-26T03:56:00.971Z Has data issue: false hasContentIssue false
  • English
  • Français

Aluminizing for TiAl turbocharger rotor by reduced pressure metal-organic chemical vapor deposition (RPMOCVD) and the efficiency of its oxidation resistance

Published online by Cambridge University Press:  03 March 2011

Takakazu Suzuki ,
Hiroyuki Umehara  and
Haruki Hino
Takakazu Suzuki
Affiliation:
National Institute of Materials and Chemical Research, 1-1 Higashi, Tsukuba, Ibaraki 305, Japan
Hiroyuki Umehara
Affiliation:
National Institute of Materials and Chemical Research, 1-1 Higashi, Tsukuba, Ibaraki 305, Japan
Haruki Hino
Affiliation:
Kawasaki Heavy Industries Ltd., 1-1 Kawasaki, Akashi, Hyogo 673, Japan
Get access

Abstract

A complex-shaped TiAl turbine rotor has been uniformly aluminized by a metal-organic chemical vapor deposition under reduced pressure (RPMOCVD), and a thick TiAl3 layer, which affects the oxidation resistance, can be formed on the surface by subsequent heat treatment. The oxidation resistance has been studied with an oxidation test at 1173 K for 760 ks in static air. The microstructure has been investigated by SEM, EPMA, AES, and XRD. A heat treatment at above 933 K, which is the melting point of Al, is required to enhance the oxidation resistance of TiAl. With increasing the surface roughness of TiAl, the formation of TiAl3 increases, and consequently the oxidation resistance is more improved.

Type
Articles
Information
Journal of Materials Research , Volume 9 , Issue 8 , August 1994 , pp. 1984 - 1989
Copyright
Copyright © Materials Research Society 1994

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1Lipsitt, H. A., in High-Temperature Ordered Intermetallic Alloys, edited by Koch, C. C., Liu, C. T., and Stoloff, N. S. (Mater. Res. Soc. Symp. Proc. 39, Pittsburgh, PA, 1985), p. 351.Google Scholar
2Yoshihara, M. and Tanaka, R., Bull. Jpn. Inst. Metals 30 (1), 61 (1991).CrossRefGoogle Scholar
3Kobayashi, E., Yoshihara, M., and Tanaka, R., J. Jpn. Inst. Metals 53, 251 (1989).CrossRefGoogle Scholar
4Nishiyama, Y., Miyashita, T., Isobe, S., and Noda, T., in High Temperature Aluminides and Intermetallics, edited by Whang, S. H., Liu, C. T., Pope, D. P., and Stiegler, J. O. (The Minerals, Metals and Materials Society, Warrendale, PA, 1990), pp. 557–584.Google Scholar
5Taniguchi, S., Bull. Jpn. Inst. Metals 31, 497 (1992).Google Scholar
6Taniguchi, S., Shibata, T., and Takeuchi, K., Mater. Trans. JIM 32, 299 (1991).CrossRefGoogle Scholar
7Clay, F. A., Final Report, BDX-613-866 (Rev.) Aug., Bendix Corp., Kansas (1973).Google Scholar
8Pierson, H. O., Thin Solid Films 45, 257 (1977).Google Scholar
9Malazgirt, A. and Evans, J. W., Metall. Trans. B 11B, 225 (1980).CrossRefGoogle Scholar
10Vandenbulcke, L., Thin Solid Films 102, 149 (1983).CrossRefGoogle Scholar
11Umakoshi, Y., Yamaguchi, M., Sakagami, T., and Yamane, T., J. Mater. Sci. 24, 1599 (1989).CrossRefGoogle Scholar
12Furukawa, H., in Proc. Bohshoku Gijutsu Symposium on High Temperature Oxidation of Intermetallic Compounds (Japan Society of Corrosion Engineering, Tokyo, Japan, 1991), pp. 54–59.Google Scholar
13Suzuki, T. and Umehara, H., J. Jpn. Inst. Metals 51, 577 (1987).CrossRefGoogle Scholar
14Kasahara, K., Takeyama, M., and Tsujimoto, T., Proc. Bohshoku Gijutsu Symposium on High Temperature Oxidation of Intermetallic Compounds (Japan Society of Corrosion Engineering, Tokyo, Japan, 1991), pp. 10–17.Google Scholar
15Hino, H. and Tsurumi, K., Kawasaki Heavy Industries Ltd., private communication (1990).Google Scholar
16Powell, C. F., Campbell, I. E., and Gonser, B. W., Vapor-Plating (John Wiley & Sons, New York, 1955), p. 25.Google Scholar
17Mabuchi, H., Asai, T., and Nakayama, Y., Scripta Metall. 23, 685 (1989).CrossRefGoogle Scholar