Coatings are always considered to improve the thermal, chemical and mechanical properties of the materials. Cold spray is one of the upcoming technologies for coatings. In this study NiCrAlY coatings were successfully deposited on Superni 76, Superni 600 and Superfer 800H superalloys (Midhani grade) for hot corrosion protection. The characterization of the cold sprayed coatings have been studied using the combined techniques of, optical microscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDAX). The deposited coatings found were dense with a porosity less than 1% and micro hardness of the order of 582- 670 Hv. XRD and EDAX analysis show Ni as the major phase in as-sprayed coating. Coating was found free from oxides.

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Characterization of NiCrAIY Coatings on Ni- And Fe-Based Superalloys by the ColdSpray Process

Sukhminderbir Singh Kalsi*, T.S. Sidhu**, 0***
* Research Scholar, Punjab Technical University, Kapurthala, Punjab, India.
** Principal, Shahedd Bhagat Singh College of Engineering & Technology, Ferozpur, Punjab, India.
*** Guru Nanak Dev University, Regional Campus, Jalandhar, Punjab, India.
Periodicity:July - September'2013
DOI : https://doi.org/10.26634/jms.1.2.2453

Abstract

Coatings are always considered to improve the thermal, chemical and mechanical properties of the materials. Cold spray is one of the upcoming technologies for coatings. In this study NiCrAlY coatings were successfully deposited on Superni 76, Superni 600 and Superfer 800H superalloys (Midhani grade) for hot corrosion protection. The characterization of the cold sprayed coatings have been studied using the combined techniques of, optical microscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDAX). The deposited coatings found were dense with a porosity less than 1% and micro hardness of the order of 582- 670 Hv. XRD and EDAX analysis show Ni as the major phase in as-sprayed coating. Coating was found free from oxides.

Keywords

Coating, High Temperature Corrosion, Cold Spray.

How to Cite this Article?

Kalsi, S. S., Sidhu, T. S., & Singh, H. (2013). Characterization of NicrAIY Coatings on Ni-and Fe-Based Superalloys By the Cold Spray Process. i-manager's Journal on Material Science, 1(2), 20-26. https://doi.org/10.26634/jms.1.2.2453

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