Pitting Corrosion Behavior of F304 Stainless Steel Under the Exposure of Ferric Chloride Solution
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Present paper deals with an experimental investigation of pitting corrosion of forged 304 stainless steel. Material is exposed to ferric chloride solution to investigate the effect of pitting corrosion. This material is known to provide structural strength with improved toughness and ductility. A number of experiments were carried out on F304 SS under ferric chloride solution by putting it for three different time durations of 8 h, 16 h, and 24 h. The results specify that pit formation increases over time. During experimentation, the number of pits, pit depth, corrosion rate, weight loss, and average pit depth have been measured. Microstructural characterization and surface roughness tests were carried out on the chemically exposed surface to understand the growth of pitting corrosion. Fractographic images high-end microscopy showed that the ferric chloride solution initiates the pitting of 304 austenite stainless steel. Furthermore, the exposure leads to the formation of a number of small pits that coalescence together to form cracks that appear at the bottom of the pit. It was also confirmed that the appearance of small bottom pits initiates cracks by increasing the duration of corrosion test to 24 h which is only due to dissolved inclusive atoms of chloride as revealed by EDX analysis.
KeywordsF304 stainless steel Pitting corrosion Corrosion rate Pit depth Ferric chloride solution
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Conflict of interest
On behalf of all authors, the corresponding author states that there is no conflict of interest.
- 21.Sherif E-SM (2011) Corrosion behavior of duplex stainless steel alloy cathodically modified with minor ruthenium additions in concentrated sulfuric acid solutions. Int J Electrochem Sci 6:2284–2298Google Scholar
- 24.Akhtar M, Khajuria A, Kumar R, Bedi R (2017) Metallugrical Investigations on dual heat cycled boron alloyed P91 ferritic/martensitic steel. In: Proceedings of Young Professionals International Conference, p C080Google Scholar
- 25.Khajuria A, Modassir Akhtar D, Kumar R, Jaganathan Swaminanthan D, Bedi R, Shukla DK (2010) Effect of boron modified microstructure on impression creep behaviour of simulated multi-pass heat affected zone of P91 steel. Dr. Samik Dutta Dr. Shitanshu Shekhar Chakraborty, 150Google Scholar
- 27.Khajuria A, Bedi R, Kumar R (2019) Investigation of impression creep deformation behavior of boron-modified P91 steel by high-end characterization techniques. Manufacturing Engineering. Springer, Singapore, pp 137–150Google Scholar