Journal
ACTA MATERIALIA
Volume 127, Issue -, Pages 389-399Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.actamat.2017.01.054
Keywords
Magnetocaloric; Composite materials; Polymer-bonded; Metal-bonded
Funding
- German Federal Ministry of Education and Research under the VIP Project [03V0540]
- Increase Competitiveness Program of NUST MISiS [K4-2015-013]
- RSF grant [N15-1210008]
- DFG [SPP 1599]
- Russian Science Foundation [15-12-10008] Funding Source: Russian Science Foundation
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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)(13)H-x 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)(13)H-x. 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. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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