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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Michalski, Bartosz
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2022In situ alloying of NiTi: Influence of laser powder bed fusion (LBPF) scanning strategy on chemical compositioncitations
- 2022Heat Treatment of NiTi Alloys Fabricated Using Laser Powder Bed Fusion (LPBF) from Elementally Blended Powderscitations
- 2021Effect of severe deformation on the microstructure and properties of Nd-Fe-B powders caused by hydrostatic extrusioncitations
- 2019Monitoring of the hydrogen decrepitation process by acoustic emissioncitations
- 2019Effect of silver content in Zr<inf>55</inf>Cu<inf>30</inf>Ni<inf>5</inf>Al<inf>10−x</inf>Ag<inf>X</inf> alloys on the supercooled liquid stability analysed by TTT diagrams
- 2017Complex Characteristics of Sintered Nd–Fe–B Magnets in Terms of Hydrogen Based Recyclingcitations
- 2016Hydrogen disproportionation phase diagram and magnetic properties for Nd<inf>15</inf>Fe<inf>79</inf>B<inf>6</inf> alloycitations
- 2013Effect of microstructure changes on magnetic properties of spark plasma sintered Nd-Fe-B powderscitations
- 2012Processing the Nd-Fe-B powders by high temperature millingcitations
- 2012Magnetic properties of Nd 12Fe 82B 6 and Nd 14Fe 80B 6 powders obtained by high temperature milling
- 2011Characterization of nanostructured Nd-Fe-Al permanent magnetscitations
- 2011Correlation between the size of Nd<inf>60</inf>Fe<inf>30</inf>Al <inf>10</inf> sample, cast by various techniques and its coercivity
- 2008Effect of processing parameters on the structure and magnetic properties of Nd60Fe30Al10 alloycitations
Places of action
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article
Monitoring of the hydrogen decrepitation process by acoustic emission
Abstract
Acoustic Emission Testing (AT) was applied to monitor the Hydrogen Decrepitation (HD) process for two different NdFeB-type materials: sintered NdFeB magnet and annealed NdFeB ingot alloy. Acoustic signals of clearly different characteristics were acquired for these two materials, indicating different course of the HD process. Acoustic waves of high signal strength and high peak amplitude were generated for the sintered NdFeB magnet whereas acoustic signals of low energy and low intensity were registered for the annealed NdFeB alloy. These findings were supported by real-time visual observation of the HD process. The sintered NdFeB magnet decrepitates rapidly and its particles spatter for a longer distance comparing to the ingot NdFeB alloy. Different behavior of the investigated materials can be explained in relation to their structural properties and manufacturing history. Fine microstructure, homogenously distributed thin layer of the Nd-rich grain boundary phase and stress accumulated after fabrication process can be responsible for more intense characteristic of the HD process in case of the sintered NdFeB magnets.