Micro-porosity Formation on the Underside of Plasma Sprayed Nickel Splats: A Microstructural Study
DOI:
https://doi.org/10.22034/JATE.2018.31Keywords:
Atmospheric plasma spray; Micro-porosity formation; Microstructure; Hydrogen gas content; Nickel splats.Abstract
The gas (micro) porosity formation in splats produced by atmospheric plasma spraying was microscopically studied through a new approach. The aim was to prove hydrogen content in plasma gas mixture propagates micro-porosity to the splat-substrate interface. Nickel powder was sprayed under argon plus 0, 7, 10, and 13 vol.% hydrogen as a secondary plasma gas on a stainless steel substrate, and the obtained microstructures of the underside splats were investigated by a scanning electron microscope. It was shown that by increasing hydrogen concentration in plasma gas mixture, more micro-pores formed in the microstructures, while pores content reached to a saturation level at higher hydrogen concentrations.
References
1. Pershin V., Lufitha M., Chandra S. and Mostaghimi J., Effect of Substrate Temperature on Adhesion Strength of Plasma-Sprayed Nickel Coatings. Journal of Thermal Spray Technology. 2003; 12(3): 370-376.
2. Choudhury T. A. , Hosseinzadeh N., Berndt C. C., Artificial Neural Network application for predicting in-flight particle characteristics of an atmospheric plasma spray process. Surface and Coatings Technology. 2011; 205(21–22): 4886–4895.
3. Sampath S., and Herman H., Rapid Solidification and Microstructure Development during Plasma Spray Deposition. Journal of Thermal Spray Technology. 1996; 5(4): 445 – 456.
4. Azarmi F., Vacuum Plasma Spraying. Advanced Materials & Processes. 2005; 163(8): 37- 39.
5. Pfender E., Fundamental Studies Associated with the Plasma Spray Process. Surface and Coatings Technology. 1988; 34: 1-14.
6. Qu M., Wu Y., Srinivasan V. and Gouldstone A., Observations of Nanoporous Foam Arising from Impact and Rapid Solidification of Molten Ni Droplets. Applied Physics Letters. 2007; 90: 254101.
7. Fruehan R. J., Gases in Metals, ASM Handbook, Volume 15: Casting, pp. 64-73, Copyright © 2008 ASM International
8. Kejun Zeng, Klassen T., Oelerich W. and Bormann R., Thermodynamics of the Ni–H System. Journal of Alloys and Compounds. 1999; 283: 151–161.
9. Nakajima H., Ikeda T., and Hyun K. Fabrication of Lotus-Type Porous Metals and their Physical Properties. Advanced Engineering Materials. 2004; 6(6): 377-384.
10. Guang-rui J., Yan-xiang L., Yuan L., Calculation of Hydrogen Solubility in Molten Alloys. Transactions of Nonferrous Metals Society of China. 2011; 21: 1130-1135.
11. MohammadiZahrani M., Meratian M., and Kabiri Y., Innovative Processing of Lotus-Type Porous Magnesium through Thermal Decomposition of Wood. Materials Letters. 2012; 85: 14–17.
12. Introduction to Thermal Spray Processing, Handbook of Thermal Spray Technology, ASM International, 2004
13. Fauchais P., Montavon G., and Bertrand G., From Powders to Thermally Sprayed Coatings. Journal of Thermal Spray Technology. 2010; 19(1-2): 56-80.
2. Choudhury T. A. , Hosseinzadeh N., Berndt C. C., Artificial Neural Network application for predicting in-flight particle characteristics of an atmospheric plasma spray process. Surface and Coatings Technology. 2011; 205(21–22): 4886–4895.
3. Sampath S., and Herman H., Rapid Solidification and Microstructure Development during Plasma Spray Deposition. Journal of Thermal Spray Technology. 1996; 5(4): 445 – 456.
4. Azarmi F., Vacuum Plasma Spraying. Advanced Materials & Processes. 2005; 163(8): 37- 39.
5. Pfender E., Fundamental Studies Associated with the Plasma Spray Process. Surface and Coatings Technology. 1988; 34: 1-14.
6. Qu M., Wu Y., Srinivasan V. and Gouldstone A., Observations of Nanoporous Foam Arising from Impact and Rapid Solidification of Molten Ni Droplets. Applied Physics Letters. 2007; 90: 254101.
7. Fruehan R. J., Gases in Metals, ASM Handbook, Volume 15: Casting, pp. 64-73, Copyright © 2008 ASM International
8. Kejun Zeng, Klassen T., Oelerich W. and Bormann R., Thermodynamics of the Ni–H System. Journal of Alloys and Compounds. 1999; 283: 151–161.
9. Nakajima H., Ikeda T., and Hyun K. Fabrication of Lotus-Type Porous Metals and their Physical Properties. Advanced Engineering Materials. 2004; 6(6): 377-384.
10. Guang-rui J., Yan-xiang L., Yuan L., Calculation of Hydrogen Solubility in Molten Alloys. Transactions of Nonferrous Metals Society of China. 2011; 21: 1130-1135.
11. MohammadiZahrani M., Meratian M., and Kabiri Y., Innovative Processing of Lotus-Type Porous Magnesium through Thermal Decomposition of Wood. Materials Letters. 2012; 85: 14–17.
12. Introduction to Thermal Spray Processing, Handbook of Thermal Spray Technology, ASM International, 2004
13. Fauchais P., Montavon G., and Bertrand G., From Powders to Thermally Sprayed Coatings. Journal of Thermal Spray Technology. 2010; 19(1-2): 56-80.
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Published
2019-12-14
How to Cite
Meratian, M. ., Pershin, L. ., & Mostaghimi, J. M. (2019). Micro-porosity Formation on the Underside of Plasma Sprayed Nickel Splats: A Microstructural Study. The Journal of Applied Tissue Engineering, 5(3), 10–16. https://doi.org/10.22034/JATE.2018.31
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