Formation mechanism of Tb-rich shell in grain boundary diffusion processed Nd–Fe–B sintered magnets
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DOI: 10.1016/j.scriptamat.2019.12.002
Abstract: Abstract We propose a new mechanism for the formation of Tb-rich shell in the Nd–Fe–B sintered magnet that was subjected to the grain boundary diffusion (GBD) process using TbH2. Tb-enriched liquid films form along grain… read more here.
Keywords: grain boundary; mechanism; boundary diffusion; rich shell ... See more keywords
Modulation of ODH Propane Selectivity by Zeolite Support Desilication: Vanadium Species Anchored to Al-Rich Shell as Crucial Active Sites
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DOI: 10.3390/ijms23105584
Abstract: The commercially available zeolite HY and its desilicated analogue were subjected to a classical wet impregnation procedure with NH4VO3 to produce catalysts differentiated in acidic and redox properties. Various spectroscopic techniques (in situ probe molecules… read more here.
Keywords: vanadium species; propane; zeolite; rich shell ... See more keywords