Hostname: page-component-848d4c4894-wg55d Total loading time: 0 Render date: 2024-05-15T02:51:17.104Z Has data issue: false hasContentIssue false
  • English
  • Français

Nickel Aluminide Superalloys Created by SHS of Nano-Particle Reactants

Published online by Cambridge University Press:  01 February 2011

Emily M. Hunt ,
John J. Granier ,
Keith B. Plantier  and
Michelle L. Pantoya
Emily M. Hunt
Affiliation:
Department of Mechanical Engineering, Texas Tech University, Lubbock, TX 79409
John J. Granier
Affiliation:
Department of Mechanical Engineering, Texas Tech University, Lubbock, TX 79409
Keith B. Plantier
Affiliation:
Department of Mechanical Engineering, Texas Tech University, Lubbock, TX 79409
Michelle L. Pantoya
Affiliation:
Department of Mechanical Engineering, Texas Tech University, Lubbock, TX 79409
Get access

Abstract

Advancements in nanotechnology for material processing have spurred the development of superalloys that provide improved protection against corrosion and wear. Nano-scale reactant particles offer unique thermal properties and increased homogeneity that may improve the microstructural features and macroscopic properties of the final product. In this study up to 10-wt% nano-scale molybdenum tri-oxide (MoO3) particles were added to micron scale nickel (Ni) and aluminum (Al). The goal was to produce a superalloy by generating excessively high heating rates and adding an oxidizer that would produce small quantities of Al2O3 (a strengthening agent) within the microstructure of the alloy. Experiments were performed on pellets pressed to 60% theoretical maximum density. Ignition and flame propagation were examined using a CO2 laser and imaging diagnostics that include a copper-vapor laser coupled with a high-speed camera. Product microstructure was examined using scanning electron microscopy. Abrasion testing was performed to evaluate the wear resistance properties of the superalloy. Results show that adding MoO3 increases the flame temperature and produces greater ignition sensitivity. Also, small quantities of MoO3 produce a more homogeneous microstructure and increase the overall wear resistance of the product.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 800: Symposium AA – Synthesis, Characterization, and Properties of Energetic/Reactive Nanomaterials , 2003 , AA4.6
Copyright
Copyright © Materials Research Society 2004

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

[1] Mutasim, Z. Z., Solar Turbines Inc., Internal Technical Report No. TTS-117–398–2M (1998)Google Scholar
[2] Batham, M., Bining, A., Birkinshaw, K., Hatfield, D., Magaletti, M., Pantoya, M., Soinski, A., California Energy Commission Report: CEC-EPAG-2000 (2000).Google Scholar
[3] Granier, J. J. and Pantoya, M. L., Submitted to Combustion and Flame, June (2003).Google Scholar
[4] Hunt, E. M., Plantier, K. B. and Pantoya, M. L., accepted for publication in Acta Materiala, September (2003).Google Scholar
[5] Granier, J. J., Plantier, K. B. and Pantoya, M. L., Submitted to the 30th International Combustion Symposium, Chicago, IL. (2004).Google Scholar
[6] Noboru, I., Yoshiharu, O., Kashu, S., “Fundamentals of Superfine Particles”, Chapter 1 of Superfine Particle Technology, pp. 1–19, Springer-Verlag, London (1992).Google Scholar
[7] Wronski, C. R. M., Brit. J. Appl. Phys. 18, pp. 1731–1737 (1967).Google Scholar
[8] Bockmon, B. S., Pantoya, M. L., Son, S. F., Asay, B. W., Mang, J. T., Submitted to Combustion and Flame, Oct (2003).Google Scholar
[9] Wang, L. L., Munir, Z. A. and Maximov, Y. M., J. of Mat. Sci 28, pp.3693–3708 (1993).Google Scholar