Surface modification of binder-jet additive manufactured Inconel 625 via electrospark deposition
| Autor: | Ehsan Marzbanrad, Yahya Mahmoodkhani, Norman Y. Zhou, Pablo D. Enrique, Zhen Jiao, Ehsan Toyserkani |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Intermetallic chemistry.chemical_element 02 engineering and technology engineering.material 01 natural sciences chemistry.chemical_compound Coating Aluminium 0103 physical sciences Materials Chemistry Surface roughness 010302 applied physics Metallurgy Surfaces and Interfaces General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Inconel 625 Surfaces Coatings and Films chemistry engineering Surface modification 0210 nano-technology Electrospark deposition Nickel aluminide |
| Zdroj: | Surface and Coatings Technology. 362:141-149 |
| ISSN: | 0257-8972 |
| Popis: | Advancements in additive manufacturing have facilitated its adoption in the aerospace industry, where a lower production volume for high-valued components is required. However, the poor surface quality of additively manufactured parts is detrimental to component lifespan and requires additional post-processing steps. Here, we address surface roughness and near-surface porosities in binder-jet additively manufactured Inconel 625 parts using an electrospark deposition (ESD) technique. Localized surface melting and material transfer from the ESD electrode results in a near-surface region with increased density (from 62.9% to 99.2%) and increased hardness (from 109 HV to 962 HV). The use of an AA4043 aluminum alloy electrode forms a nickel aluminide intermetallic coating when deposited on Inconel 625, with the potential for use in applications that require resistance to high temperature oxidation. |
| Databáze: | OpenAIRE |
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