INVESTIGADORES
SERQUIS Adriana Cristina
artículos
Título:
Core Microstructure and Strain State Analysis in MgB2 Wires with Different Metal Sheaths
Autor/es:
C. SOBRERO; M. T. MALACHEVSKY; A. SERQUIS
Revista:
Advances in condensed matter physics
Editorial:
Hindawi
Referencias:
Año: 2015 vol. 2973 p. 1 - 6
Resumen:
We present a detailed analysis of the effect of the sheath materials on the microstructure and superconducting properties of MgB2wires produced by the powder-in-tube method (PIT). We reduced commercial MgB2 powder by attrition milling in nitrogenatmosphere using tungsten carbide balls and obtained powderswith grain sizes lower than 150nmand different strain states throughthis 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 thecritical 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.