Materials science forum · 2013 · 26 citations · 6 references
Natural SciencesMaterials EngineeringMaterials ScienceCeramic MaterialsMagnetic MaterialsMetallurgyAlloysMagnetic CeramicsPowder MetallurgyPowder ProcessingPowder TechnologySinteringMagnetic Shape Memory AlloysMartensitic Phase TransformationMetal PowdersPowder PreparationPowder SinteringShape MemorySintering BehaviorSpark Plasma Sintering
Ni-Mn-Ga-based magnetic shape memory materials were elaborated by spark plasma sintering method. Micron sized particles were prepared by spark-erosion method in liquid argon and liquid nitrogen from preliminary melted magnetic shape memory master alloys Ni-28.5Mn-22.5G at.%. Powders were annealed in H2 gas atmosphere before sintering. Depending on the cryogenic liquids the morphology of particles alternated between spherical solid and hollow balls. The conditions of spark eroded powder elaboration strongly effect on the morphology, martensitic behavior, and structure of sintered samples. In particularly, martensite has 5M structure in bulk material; 14M and non-modulated martensites were found in annealed powders and sintered compacts correspondingly.
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Ni–Mn–Ga multifunctional compounds
Outi Söderberg, Ilkka Aaltio, Yanling Ge et al. · Materials Science and Engineering A · 2007 · 69 citations
Hollow metallic microspheres produced by spark erosion
A. E. Berkowitz, H. Harper, David J. Smith et al. · Applied Physics Letters · 2004 · 48 citations · Full text
Natural Sciences, Materials Engineering, Materials Science +12
Yongjun Tang, David J. Smith, Hao Hu et al. · IEEE Transactions on Magnetics · 2003 · 23 citations
Natural Sciences, Materials Engineering, Materials Science +17