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X-Ray Diffraction Study of Cold Sprayed Ni-20Cr and Ni-50Cr Coatings on Boiler

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Abstract:

X-ray diffraction (XRD) is a versatile, non-destructive technique that reveals detailed information about the chemical composition and crystallographic structure of materials. In this work Ni-20Cr and Ni-50Cr coatings were deposited on two boiler steels namely T22 and SA 516 steel. The measurement of residual stresses of these cold sprayed coatings was done with the help of X-ray diffraction technique. This paper discussed the XRD study of the as-sprayed coatings. Further the XRD technique was used to study the uncoated and coated steels after cyclic exposure to air, molten salt [Na2SO4-60%V2O5], and actual boiler environments. The results obtained from the XRD analysis have been shown. The weight change results showed that the coated steels performed better than their uncoated counterparts which might be attributed to the formation of protective phases.

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Periodical:

Advanced Materials Research (Volume 620)

Pages:

257-262

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.620.257

Citation:

Cite this paper

Online since:

December 2012

Authors:

Niraj Bala, Harpreet Singh, Satya Prakash

Keywords:

Cold Spray Coatings, Hot Corrosion, Residual Stress, X-Ray Diffraction (XRD)

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