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Abstract No.: |
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Scheduled at:
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Friday, May 23, 2014, Hall H1 12:00 PM Corrosion Protection
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Title: |
Performance of detonation-gun sprayed coatings in Na2SO4- 60% V2O5 environment at 900°C
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Authors: |
Gagandeep Kaushal* / Punjab Technical University, India Harpreet Singh / Indian Institute of Technology Ropar , India Satya Prakash/ Indian Institute of Technology Roorkee, India
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Abstract: |
Detonation-gun thermal spray technique was used to deposit commercial available Ni-20Cr and WC-Co coatings on ASTM-SA213-T22 boiler steel. The behaviour of uncoated and coated steels was studied when subjected to hot-corrosion in a molten salt boiler environment (Na2SO4-60%V2O5) at 900°C for 50 cycles. The mass change measurements were made at the end of each cycle to understand the kinetics of corrosion. X-ray diffraction (XRD) and scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS) were used to characterize the corrosion products. A detailed analysis of the reaction kinetics and oxide scales formed is discussed in the present paper.
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