Isothermal Oxidation Behavior of Ni Base Superalloy DM02 for High Temperature Dies

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The isothermal oxidation behavior of a new developed Ni base superalloy named DM02 for high temperature dies was studied in this paper. The dynamic curve was achieved by monitoring weight gain of the alloy as a function of time. The results showed that the alloy had fairly good oxidation resistance at 1050°C and 1100°C. The oxidation kinetics at both 1050°C and 1100°C followed parabolic rules in segment. It has been found that the oxidation of the alloy was controlled by multi-oxides of (Ni, Co)O, (Ni, Co)Al2O4, and NiWO4, growth mechanism in the primary stage, and by Al2O3, NiAl2O4 growth mechanism in the following stage. After oxidation at 1050°C for 100h, the oxide scale of the alloy was mainly composed of two areas. Some were thin uniform (Ni, Co)Al2O4(outer)/Al2O3 (inner) composites scale and others were multi-layer oxide scale of ( Ni,Co)O / multi-oxides (mainly NiWO4、NiO and NiAl2O4.) /Al2O3.

Info:

Periodical:

Materials Science Forum (Volumes 546-549)

Edited by:

Yafang Han et al.

Pages:

1253-1256

Citation:

Q. Li et al., "Isothermal Oxidation Behavior of Ni Base Superalloy DM02 for High Temperature Dies", Materials Science Forum, Vols. 546-549, pp. 1253-1256, 2007

Online since:

May 2007

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$38.00

[1] David Furrer, Advanced Materials & Processes, vol. 3(1999), P. 33.

[2] Summary of Novel High Technical Material, editor committee, Materials Science and Technology Press of China, Beijing (1993), P. 203.

[3] C.B. Xiao, Journal of Material Engineering, Vol. 2(2005), P. 44-47.

[4] M.S. Li, High Temperature Corrosion of Metals(2001), P. 65.

[5] C.J. Ye, ACTA Metallurgica sinica, Vol. 30 No. 1(1994), P. A44-48.

[6] C.A. Breret and C.E. Lowell, NASA TND- 7615(1974).

[7] M.S. Li, High Temperature Corrosion of Metals(2001).

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