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3. Manufacturing processes for magnetocaloric materials
In this third part, we develop the practical aspects of producing magnetocaloric materials of the La(Fe, Si) 13 and MnFe(P, Si) type and the issues involved in shaping them for use in cooling systems.
The main challenge is to minimize the segregation of elements and ensure their redistribution in order to obtain homogeneous materials on an industrial scale (between several kilograms and several tons). Two methods are described:
rapid cooling (hyperquenching or atomization);
reactive sintering.
Finally, we present a shaping process developed by BASF, called "epoxy binding", which maximizes the exchange surface between the magnetocaloric material and the heat transfer fluid.
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Manufacturing processes for magnetocaloric materials
Conclusion
Bibliography
Patents
Article for magnetic heat exchange and method of manufacturing the same WO2008/099234
Method for manufacturing a magnetocaloric element, and magnetocaloric element thus obtained WO2013/135908
High porosity particulate beds structurally stabilized by epoxy WO 2015038355 A1.
Directory
Laboratories involved in magnetocaloric materials research:
University of Ljubljana, Slovenia
The Blackett Laboratory, Imperial College London, United Kingdom
Istituto Nazionale di Ricerca Metrologica, Turin, Italy
IMEM-CNR, Parma Italy
University of Genoa, Italy
...
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