Core Microstructure and Strain State Analysis in MgB2 Wires with Different Metal Sheaths
We present a detailed analysis of the effect of the sheath materials on the microstructure and superconducting properties of MgB2 wires produced by the powder-in-tube method (PIT). We reduced commercial MgB2 powder by attrition milling in nitrogen atmosphere using tungsten carbide balls and obtained...
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | Advances in Condensed Matter Physics |
| Online Access: | http://dx.doi.org/10.1155/2015/297363 |
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| author | C. E. Sobrero M. T. Malachevsky A. Serquis |
| author_facet | C. E. Sobrero M. T. Malachevsky A. Serquis |
| author_sort | C. E. Sobrero |
| collection | DOAJ |
| description | We present a detailed analysis of the effect of the sheath materials on the microstructure and superconducting properties of MgB2 wires produced by the powder-in-tube method (PIT). We reduced commercial MgB2 powder by attrition milling in nitrogen atmosphere using tungsten carbide balls and obtained powders with grain sizes lower than 150 nm and different strain states through this process. Several Ti, stainless steel, and copper monofilamentary wires were prepared using these powders by the PIT method. We investigated different thermal treatments and mechanical paths during the processing of the wires for the enhancement of the critical currents. The superconducting properties were determined by magnetization measurements in a SQUID magnetometer. The correlation between the thermal treatments, structure, and superconducting properties is discussed. |
| format | Article |
| id | doaj-art-98d77fcf632e4fe78a8c750207faea35 |
| institution | Kabale University |
| issn | 1687-8108 1687-8124 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Condensed Matter Physics |
| spelling | doaj-art-98d77fcf632e4fe78a8c750207faea352025-02-03T05:44:55ZengWileyAdvances in Condensed Matter Physics1687-81081687-81242015-01-01201510.1155/2015/297363297363Core Microstructure and Strain State Analysis in MgB2 Wires with Different Metal SheathsC. E. Sobrero0M. T. Malachevsky1A. Serquis2Centro Atómico Bariloche, CNEA, Avenida Bustillo 9500, 8400 San Carlos de Bariloche, ArgentinaCentro Atómico Bariloche, CNEA, Avenida Bustillo 9500, 8400 San Carlos de Bariloche, ArgentinaCentro Atómico Bariloche, CNEA, Avenida Bustillo 9500, 8400 San Carlos de Bariloche, ArgentinaWe present a detailed analysis of the effect of the sheath materials on the microstructure and superconducting properties of MgB2 wires produced by the powder-in-tube method (PIT). We reduced commercial MgB2 powder by attrition milling in nitrogen atmosphere using tungsten carbide balls and obtained powders with grain sizes lower than 150 nm and different strain states through this process. Several Ti, stainless steel, and copper monofilamentary wires were prepared using these powders by the PIT method. We investigated different thermal treatments and mechanical paths during the processing of the wires for the enhancement of the critical currents. The superconducting properties were determined by magnetization measurements in a SQUID magnetometer. The correlation between the thermal treatments, structure, and superconducting properties is discussed.http://dx.doi.org/10.1155/2015/297363 |
| spellingShingle | C. E. Sobrero M. T. Malachevsky A. Serquis Core Microstructure and Strain State Analysis in MgB2 Wires with Different Metal Sheaths Advances in Condensed Matter Physics |
| title | Core Microstructure and Strain State Analysis in MgB2 Wires with Different Metal Sheaths |
| title_full | Core Microstructure and Strain State Analysis in MgB2 Wires with Different Metal Sheaths |
| title_fullStr | Core Microstructure and Strain State Analysis in MgB2 Wires with Different Metal Sheaths |
| title_full_unstemmed | Core Microstructure and Strain State Analysis in MgB2 Wires with Different Metal Sheaths |
| title_short | Core Microstructure and Strain State Analysis in MgB2 Wires with Different Metal Sheaths |
| title_sort | core microstructure and strain state analysis in mgb2 wires with different metal sheaths |
| url | http://dx.doi.org/10.1155/2015/297363 |
| work_keys_str_mv | AT cesobrero coremicrostructureandstrainstateanalysisinmgb2wireswithdifferentmetalsheaths AT mtmalachevsky coremicrostructureandstrainstateanalysisinmgb2wireswithdifferentmetalsheaths AT aserquis coremicrostructureandstrainstateanalysisinmgb2wireswithdifferentmetalsheaths |