TU Darmstadt / ULB / TUbiblio

A new type of La(Fe,Si)13-based magnetocaloric composite with amorphous metallic matrix

Krautz, Maria and Funk, Alexander and Skokov, Konstantin P. and Gottschall, Tino and Eckert, Jürgen and Gutfleisch, Oliver and Waske, Anja (2015):
A new type of La(Fe,Si)13-based magnetocaloric composite with amorphous metallic matrix.
In: Scripta Materialia, Elsevier Science Publishing, pp. 50-53, 95, ISSN 13596462, [Online-Edition: http://dx.doi.org/10.1016/j.scriptamat.2014.10.002],
[Article]

Abstract

We report on novel magnetocaloric composites based on La(Fe,Si)13 particles in an amorphous metallic matrix. Hot compaction at the glass transition temperature, Tg, of the matrix prevents crack formation as commonly occurs in conventional hot-compacted La(Fe,Si)13 material. This damage can affect the magnetocaloric performance. The approach in the present paper shows that the La(Fe,Si)13 particles stay intact due to the buffer-effect of the amorphous and ductile matrix at Tg. Therefore, the magnetocaloric properties of the composites are almost independent of the compaction pressures.

Item Type: Article
Erschienen: 2015
Creators: Krautz, Maria and Funk, Alexander and Skokov, Konstantin P. and Gottschall, Tino and Eckert, Jürgen and Gutfleisch, Oliver and Waske, Anja
Title: A new type of La(Fe,Si)13-based magnetocaloric composite with amorphous metallic matrix
Language: English
Abstract:

We report on novel magnetocaloric composites based on La(Fe,Si)13 particles in an amorphous metallic matrix. Hot compaction at the glass transition temperature, Tg, of the matrix prevents crack formation as commonly occurs in conventional hot-compacted La(Fe,Si)13 material. This damage can affect the magnetocaloric performance. The approach in the present paper shows that the La(Fe,Si)13 particles stay intact due to the buffer-effect of the amorphous and ductile matrix at Tg. Therefore, the magnetocaloric properties of the composites are almost independent of the compaction pressures.

Journal or Publication Title: Scripta Materialia
Volume: 95
Publisher: Elsevier Science Publishing
Uncontrolled Keywords: Metal matrix composites, Hot pressing, Three-dimensional tomography, Magnetocaloric effect
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Functional Materials
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 17 Nov 2014 10:04
Official URL: http://dx.doi.org/10.1016/j.scriptamat.2014.10.002
Identification Number: doi:10.1016/j.scriptamat.2014.10.002
Funders: The financial support of this joint publication by the German Research Foundation (DFG-Deutsche Forschungsgemeinschaft) within the priority program SPP 1599 is gratefully acknowledged., The authors are thankful to Norbert Mattern for providing the Pd-based amorphous material.
Export:

Optionen (nur für Redakteure)

View Item View Item