The influence of heat treatment on the microstructural,mechanical and corrosion behaviour of cold sprayed SS 316L coatings |
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| Authors: | G Sundararajan P Sudharshan Phani A Jyothirmayi Ravi C Gundakaram |
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| Affiliation: | (1) International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), Balapur (P.O.), Hyderabad, 500 005, India |
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| Abstract: | The present study evaluates the response of cold sprayed SS 316L coatings on mild steel substrate to aqueous corrosion in
a 0.1 N HNO3 solution as determined using polarization tests. The corrosion behaviour of the SS 316L coating was studied not only in the
as-coated condition, but also after heat treatment at 400, 800 and 1,100 °C. Heat treatment reduced the porosity, improved
inter-splat bonding, increased the elastic modulus and more importantly increased the corrosion resistance of the cold sprayed
SS 316L coating. |
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