Influence of Cobalt on the Properties of Load-Sensitive Magnesium Alloys
| Autor: | Hans Jürgen Maier, Friedrich-Wilhelm Bach, Christian Demminger, Christian Klose, Gregor Mroz, Kai Kerber, W. Reimche |
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| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau
chemistry.chemical_element magnesium load-sensitive materials lcsh:Chemical technology Biochemistry Article Rod Analytical Chemistry physical sensors Ultimate tensile strength lcsh:TP1-1185 Electrical and Electronic Engineering Inverse magnetostrictive effect villari effect Instrumentation Villari effect Mechanical load Magnesium Metallurgy Microstructure cobalt Atomic and Molecular Physics and Optics magnetic materials chemistry Ferromagnetism ddc:620 Cobalt |
| Zdroj: | Sensors; Volume 13; Issue 1; Pages: 106-118 Sensors, Vol 13, Iss 1, Pp 106-118 (2012) Sensors 13 (2013), Nr. 1 Sensors (Basel, Switzerland) |
| ISSN: | 1424-8220 |
| DOI: | 10.3390/s130100106 |
| Popis: | In this study, magnesium is alloyed with varying amounts of the ferromagnetic alloying element cobalt in order to obtain lightweight load-sensitive materials with sensory properties which allow an online-monitoring of mechanical forces applied to components made from Mg-Co alloys. An optimized casting process with the use of extruded Mg-Co powder rods is utilized which enables the production of magnetic magnesium alloys with a reproducible Co concentration. The efficiency of the casting process is confirmed by SEM analyses. Microstructures and Co-rich precipitations of various Mg-Co alloys are investigated by means of EDS and XRD analyses. The Mg-Co alloys' mechanical strengths are determined by tensile tests. Magnetic properties of the Mg-Co sensor alloys depending on the cobalt content and the acting mechanical load are measured utilizing the harmonic analysis of eddy-current signals. Within the scope of this work, the influence of the element cobalt on magnesium is investigated in detail and an optimal cobalt concentration is defined based on the performed examinations. DFG/Collaborative Research Center 653/Subproject E2 DFG/CRC/653 |
| Databáze: | OpenAIRE |
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