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Meeting Materials Science & Technology 2019
Symposium Corrosion of Additively Manufactured Metals
Presentation Title Improved Electrochemical Response of SLM 316L SS in Physiological Solutions
Author(s) Nahid Sultan Al-Mamun, Ishraq Shabib
On-Site Speaker (Planned) Nahid Sultan Al-Mamun
Abstract Scope Upon selective choice of fabrication process parameters, 316L stainless steel was additively manufactured by Selective Laser Melting (SLM) technique. Electrochemical behavior of SLM 316L SS was studied in physiological solutions of phosphate buffer saline (pH ~7.2) with and without the addition of complexing agent i.e citrate ions. Cyclic potentiodynamic polarization and electrochemical impedance spectroscopy revealed that the addition of complexing agent influences the stability of passive film shifting the corrosion potential towards more negative potential, increasing corrosion current density, and reducing charge transfer resistance. Cyclic voltammetry was performed to study the electrochemical processes occurring on the surface and higher degree of metal dissolution due to complexion formation was observed. However, SLM 316L SS demonstrated improved corrosion resistance compared to the conventional counterpart in both experimental conditions. Relatively stable passive film formation due to refined microstructure and suppression of MnS inclusion formation attributed to better corrosion resistance of SLM 316L SS.
Proceedings Inclusion? Definite: At-meeting proceedings

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Corrosion of Additive Materials for Naval Applications
Corrosion of Additively Manufactured Stainless Steels – Process, Structure, and Performance
Corrosion Performance of Aluminium Based Functionally Graded Materials Processed by Wire-arc Additive Manufacturing
Effect of Chloride and Heat Treatment on Pitting Corrosion Resistance and Mechanical Properties of a 316L Stainless Steel Manufactured by the Direct Metal Laser Sintering (DMLS) Process
Effect of Surface Finish on the Corrosion Properties of Additively Manufactured Stainless Steel
Electrochemical Characterization of Additively Manufactured Al-10Si-Mg in Standardized Test Solutions
Evaluation of the Corrosion Response of Additively-Manufactured 17-4 PH Stainless Steel Samples as a Function of Build and Finish Parameters
High Temperature Oxidation and Creep Oxidation of Compositionally Graded Alloys in Air and Supercritical CO2: Modeling and Experiment
High Temperature Oxidation of 718 Alloy Produced by Additive Manufacturing
Hydrogen Concentration and Uptake in Additively Manufactured Austenitic Stainless Steels
Improved Electrochemical Response of SLM 316L SS in Physiological Solutions
Issues in Localized Corrosion of Selective Laser Melted 316L
P3-37: Microstructure and Corrosion Behavior of Alloy 625 Produced by Laser Powder Bed Fusion
Surface Damage of an AM-AlSi10Mg Alloy Exposed to Corrosive Environments with Lack of Fusion Defects and Powder Contamination
Surface Preparation of Additively Manufactured Metals and Subsequent Comparison of Corrosion Characteristics
The Effects of Laser Peening Parameters on the Corrosion and Hardness Properties of Ti6Al4V Alloy
Understanding the Influence of Retained Nitrogen in Additively-Manufactured 17-4 Stainless Steel: Does it Really Improve Corrosion Resistance?

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