Oxidation behavior and breakdown of an aluminide coating on DZ40M alloy athigh temperatures

Authors
Liu, PS Liang, KM Zhou, HY Guan, HR Sun, XF Jin, T Yang, KN
Citation
Ps. Liu et al., Oxidation behavior and breakdown of an aluminide coating on DZ40M alloy athigh temperatures, OXID METAL, 55(5-6), 2001, pp. 543-550
Citations number
10
Categorie Soggetti
Metallurgy
Journal title
OXIDATION OF METALS
ISSN journal
0030770X → ACNP
Volume
55
Issue
5-6
Year of publication
2001
Pages
543 - 550
Database
ISI
SICI code
0030-770X(200106)55:5-6<543:OBABOA>2.0.ZU;2-Z
Abstract
DZ40M alloy is a new Co-base superalloy, which is suitable for the blade ma terial of gas turbines. In this paper, isothermal oxidation of an aluminide coating on this alloy was examined at 900-1100 degreesC in air, it was obs erved that the weight gain at lower temperatures (900 and 1000 degreesC) wa s greater than that at the higher temperature (1050 degreesC), which was du e to the formation of both theta -Al2O3 and alpha -Al2O3 at 900 and 1000 de greesC but only alpha -Al2O3 at 1050 and 1100 degreesC.