Infra-red melting and densification
High-temperature localised melting in vacuo can be performed using infra-red systems designed in the group. High-intensity lamps are focussed at a point on a sealed, evacuated glass tube containing a sample. The tube can be rotated or moved using stepper motors during processing, allowing regions of the sample to be selectively melted and resolidified during processing. Two geometries are available - a vertical system, for densification of fibres, and a horizontal system for coated conductors.
 Vertical, for fibre densification |
 Horizontal, for coated conductors |
Very high-density YBCO can be produced by this method, as illustrated by these micrographs:
 Before |
 After |
Related publications
| Showing 4 publications related to infra-red processing in date order. Links to online copies of these papers may require a journal subscription (personal or institutional). | |
|---|---|
| 1991 | |
| 1 | N.Ozkan, B.A.Glowacki,E.A.Robinson and P.A.Freeman, Infrared zone melting process for YBa2Cu3O7-δ wires Journal of Materials Research, 6 (9) 1829 (September 1991) | View paper online |
| 2011 | |
| 2 | M. Mosiadz, K. L. Juda, S. C. Hopkins, J. Soloducho and B. A. Glowacki, An in-depth in situ IR study of the thermal decomposition of barium trifluoroacetate hydrate Thermochimica Acta, 513 (1-2) 33-37 (20 January 2011) | DOI: 10.1016/j.tca.2010.11.004 |
| 2012 | |
| 3 | M. Mosiadz, K. L. Juda, S. C. Hopkins, J. Soloducho, B. A. Glowacki, An in-depth in situ IR study of the thermal decomposition of yttrium trifluoroacetate hydrate Journal of Thermal Analysis and Calorimetry, 107 (2) 681-691 (2012) | DOI: 10.1007/s10973-011-1772-6 |
| 4 | M. Mosiadz, K. L. Juda, S. C. Hopkins, J. Soloducho, B. A. Glowacki, An in-depth in situ IR study of the thermal decomposition of copper trifluoroacetate hydrate Journal of Fluorine Chemistry, 135 59-67 (March 2012) | DOI: 10.1016/j.jfluchem.2011.08.010 |