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Production and properties of metal-bonded La(Fe,Mn,Si) 13 H x composite material

Radulov, I. A. and Karpenkov, D. Yu. and Skokov, K. P. and Karpenkov, A. Yu. and Braun, T. and Brabänder, V. and Gottschall, T. and Pabst, M. and Stoll, B. and Gutfleisch, O. (2017):
Production and properties of metal-bonded La(Fe,Mn,Si) 13 H x composite material.
In: Acta Materialia, Elsevier, pp. 389-399, 127, ISSN 13596454, [Online-Edition: http://doi.org/10.1016/j.actamat.2017.01.054],
[Article]

Abstract

Due to their excellent magnetocaloric properties hydrogenated La(Fe,Mn,Si)13 are considered as promising and cost efficient materials for active magnetic regenerators operating near room temperature. However, due to their poor mechanical and chemical stability this alloys can not be directly implemented in a cooling machine. A solution of the problem is the production of a composite La(Fe,Mn,Si)13Hx magnetocaloric materials by using adhesive-bonding techniques similar to those used for production of polymer-bonded permanent magnets. Upon bonding one has to consider that the thermal stability of the polymer binder is rather low. Main disadvantage of a polymer-bonded composite is the fatigue due to the mechanical stress caused by the large magnetovolume effect in La(Fe,Mn,Si)13Hx. Our article reports on a new method and equipment to produce metal-bonded magnetocaloric material using the low melting eutectic Field's alloy as a binder. A comprehensive investigation of the magnetocaloric, mechanical, chemical and thermal transport properties of polymer-bonded and metal-bonded magnetocaloric material is presented.

Item Type: Article
Erschienen: 2017
Creators: Radulov, I. A. and Karpenkov, D. Yu. and Skokov, K. P. and Karpenkov, A. Yu. and Braun, T. and Brabänder, V. and Gottschall, T. and Pabst, M. and Stoll, B. and Gutfleisch, O.
Title: Production and properties of metal-bonded La(Fe,Mn,Si) 13 H x composite material
Language: English
Abstract:

Due to their excellent magnetocaloric properties hydrogenated La(Fe,Mn,Si)13 are considered as promising and cost efficient materials for active magnetic regenerators operating near room temperature. However, due to their poor mechanical and chemical stability this alloys can not be directly implemented in a cooling machine. A solution of the problem is the production of a composite La(Fe,Mn,Si)13Hx magnetocaloric materials by using adhesive-bonding techniques similar to those used for production of polymer-bonded permanent magnets. Upon bonding one has to consider that the thermal stability of the polymer binder is rather low. Main disadvantage of a polymer-bonded composite is the fatigue due to the mechanical stress caused by the large magnetovolume effect in La(Fe,Mn,Si)13Hx. Our article reports on a new method and equipment to produce metal-bonded magnetocaloric material using the low melting eutectic Field's alloy as a binder. A comprehensive investigation of the magnetocaloric, mechanical, chemical and thermal transport properties of polymer-bonded and metal-bonded magnetocaloric material is presented.

Journal or Publication Title: Acta Materialia
Volume: 127
Publisher: Elsevier
Uncontrolled Keywords: Magnetocaloric, Composite materials, Polymer-bonded, Metal-bonded
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Functional Materials
Date Deposited: 17 Mar 2017 10:11
Official URL: http://doi.org/10.1016/j.actamat.2017.01.054
Identification Number: doi:10.1016/j.actamat.2017.01.054
Funders: The work of I. A. Radulov is supported by the German Federal Ministry of Education and Research under the VIP Project No. 03V0540 (MagKal)., D. Yu. Karpenkov is grateful to the Grant in the framework of Increase Competitiveness Program of NUST MISiS (K4-2015-013)., A. Karpenkov acknowledges RSF grant (N15-12-10008)., The work of K. P. Skokov, T. Gottschall and O. Gutfleisch was supported by DFG (Grant No. SPP 1599).
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