Surface Integrity, Surface Finish and Corrosion Characteristics of Stainless Steels in Saline Water Medium

Abhimanyu Chaudhari; Ankur Srivastava; Tushar K. Roy; Ajit K. Chakrabarti; M. N. Dastur

doi:https://doi.org/10.51976/ijari.521732

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Surface Integrity, Surface Finish and Corrosion Characteristics of Stainless Steels in Saline Water Medium

Abhimanyu Chaudhari, Ankur Srivastava, Tushar K. Roy, Ajit K. Chakrabarti, M. N. Dastur

Vol 5 , Issue 2 , April - June 2017 | Pages: 187-192 | Research Paper

https://doi.org/10.51976/ijari.521732

Received: January 25, 2017 | Revised: February 20, 2017 | Accepted: February 28, 2017 | Published Online: June 15, 2017

Author Details ( * ) denotes Corresponding author

1. * Abhimanyu Chaudhari, School of Materials Science and Engineering, Indian Institute of Engineering Science and Technology, Howrah, West Bengal, India (akc1940@gmail.com)

2. Ankur Srivastava, School of Materials Science and Engineering, Indian Institute of Engineering Science and Technology, Howrah, West Bengal, India

3. Tushar K. Roy, School of Materials Science and Engineering, Indian Institute of Engineering Science and Technology, Howrah, West Bengal, India

4. Ajit K. Chakrabarti, School of Materials Science and Engineering, Indian Institute of Engineering Science and Technology, Howrah, West Bengal, India

5. M. N. Dastur, School of Materials Science and Engineering, Indian Institute of Engineering Science and Technology, Howrah, West Bengal, India

The surface roughness of austenitic (304), martensitic (410) and ferritic (430) grades of stainless steels have been measured after fine emery paper grinding. The surface integrity of the ground samples were further examined in SEM. Metal removal during emery paper grinding occurred by rubbing, ploughing, micro cracking and gouging out of metal grains. The rate of corrosion/year, as determined through potentiostat test in 0.9 N NaCl solution, increased with surface roughness but it was insignificant in case of the metallographically polished samples of all the stainless steels. Corrosion progressed fast from the grinding pits on the stainless steel sample surfaces.

Keywords

Stainless Steel, Rubbing, Ploughing, Micro cracking.

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