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@article{Wang:2022:10.1016/j.ijrefrig.2021.12.016,
author = {Wang, S and Lovell, E and Guo, L and Wilson, N and Ryan, MP and Giuliani, F},
doi = {10.1016/j.ijrefrig.2021.12.016},
journal = {International Journal of Refrigeration},
pages = {1--4},
title = {Environment-assisted crack nucleation in La(Fe,Mn,Si)13-based magnetocaloric materials},
url = {http://dx.doi.org/10.1016/j.ijrefrig.2021.12.016},
volume = {135},
year = {2022}
}

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TY  - JOUR
AB  - Cracking in La(Fe,Si)13-based magnetocaloric materials has been observed to predominantly form around La-rich (La2O3) particles and pose a threat to their long-term structural integrity. To understand the formation of these cracks, FIB cross-sectional polishing followed by SEM characterisation was employed to study local microstructural evolution after air exposure. Results suggest that volume expansion and internal degradation associated with a chemical reaction between La2O3 particles and water/moisture can lead to crack nucleation in the 1:13 phase adjacent to La-rich particles. This observation indicates that the formation of La-rich phase should be suppressed, or their size minimised during material processing to ensure the long-term structural integrity of La(Fe,Mn,Si)13 magnetocaloric materials.
AU  - Wang,S
AU  - Lovell,E
AU  - Guo,L
AU  - Wilson,N
AU  - Ryan,MP
AU  - Giuliani,F
DO  - 10.1016/j.ijrefrig.2021.12.016
EP  - 4
PY  - 2022///
SN  - 0140-7007
SP  - 1
TI  - Environment-assisted crack nucleation in La(Fe,Mn,Si)13-based magnetocaloric materials
T2  - International Journal of Refrigeration
UR  - http://dx.doi.org/10.1016/j.ijrefrig.2021.12.016
UR  - https://www.sciencedirect.com/science/article/pii/S0140700721005168?via%3Dihub
UR  - http://hdl.handle.net/10044/1/93586
VL  - 135
ER  -

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