A Study on the Effects of the Use of Gas or Water Atomized AISI 316L Steel Powder on the Corrosion Resistance of Laser Deposited Material
| Autor: | Armando Yáñez, J.M. Amado, M.J. Tobar, José-María Montero |
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| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Materials science Metallurgy chemistry.chemical_element Potentiodynamic polarization 02 engineering and technology General Medicine Manganese Physics and Astronomy(all) 021001 nanoscience & nanotechnology Laser 01 natural sciences laser metal deposition gas atomized law.invention Corrosion chemistry law AISI 316L 0103 physical sciences Pitting corrosion Laser metal deposition 0210 nano-technology Polarization (electrochemistry) water atomized |
| Zdroj: | Physics Procedia. 83:606-612 |
| ISSN: | 1875-3892 |
| Popis: | Water atomized and gas atomized powders are commonly used in 3D laser manufacturing. Both types of AISI 316L stainless steel powders are available which differ in their manganese content. This is due to specific procedures related to the two different atomization process. The amount of manganese in the laser processed part might have important implications in its corrosion resistance. It could lead to the formation of manganese sulfides (MnS) which are known to be initiation sites for pitting corrosion. In this work, corrosion performance of laser deposited 316L steel using gas and atomized powders is compared by means of potentiodynamic polarization tests in 0.35%wt. NaCL solution. Worse performance of the gas atomized samples is observed as with respect to the water atomized ones in terms of polarization resistance, corrosion rate and pitting susceptibility. |
| Databáze: | OpenAIRE |
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