01588nab a2200205 4500 20260520000937.0 260224s2009 xxu Corrosion behavior of conventional and spark plasma-sintered Nd-Fe-B permanent magnets in different solutions jul. 2009 03/08/2010 ; 03/08/2010 4 p. ; 501-504 Transcripción del resumen del autor. Spark plasma sintering (SPS) and conventional sintering techniques were used to fabricate sintered Nd-Fe-B permanent magnets. The corrosion behaviors of both magnets in sodium chloride (NaCl), sodium hydroxide (NaOH), and sulfuric acid (H2SO4) solutions were studied. The weight-loss curves indicate that both magnets exhibit passive behavior in alkaline solution and dissolve actively in acid solution. SEM observations show that the conventional sintered Nd-Fe-B magnets exhibit typical intergranular corrosion. In the SPS magnet, however, intergranular corrosion through the Nd-rich phase is suppressed effectively due to the unique microstructure of the magnets, i.e., the grain size of the Nd2Fe14B main phase is fine and uniform, and the fine Nd-richphase does notform along the grain boundaries of main phase as with conventional magnets, but agglomerates into the triple junctions. As a result, the SPS Nd-Fe-B magnets possess excellent corrosion resistance. 7 Corrosion 65 ARTICULO Liu, W.Q. 41528 Yue, M. 19670 Zhang, D.T. 41529 175695 175695 0 0 0 0 243514 BAAB BAAB 2026-03-05 200047597 0 200047597 2026-03-05 18:56:04 2026-03-05 ARTICULO