Thermal and Electrical Conductivity of 99.9% Pure Copper Processed via Selective Electron Beam Melting
| Autor: | Sebastian J. Raab, Ralf Guschlbauer, Matthias A. Lodes, Carolin Körner |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Materials science Analytical chemistry chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Copper law.invention Thermal conductivity chemistry law Impurity Electrical resistivity and conductivity 0103 physical sciences Thermal Eddy current Cathode ray General Materials Science 0210 nano-technology Porosity |
| Zdroj: | Advanced Engineering Materials. 18:1661-1666 |
| ISSN: | 1438-1656 |
| DOI: | 10.1002/adem.201600078 |
| Popis: | This paper investigates the physical properties of 99.91% pure copper produced by Additive Manufacturing via selective electron beam melting (SEBM). Eddy current measurements and laser flash analyses are used to determine the electrical and the thermal conductivity. Electrical and thermal conductivity follow the Wiedemann-Franz law. The correlation of conductivities and porosity shows that 99.95 % dense components with nearly optimal conductivities (σ = 55.82 MS m–1 and λ = 400.1 W m–1 K–1) can be fabricated with SEBM. The small deviation from the theoretical maximum of copper (59.7 MS m–1) can be explained by the characteristics of the raw material and chemical impurities. |
| Databáze: | OpenAIRE |
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