Abstract：The （Ce20Nd80）31FebalB1M magnets prepared by double main phase powder sintering process were corroded in highly accelerated stress test system. The corrosion morphology was observed and analyzed by EDS energy spectrum. Results show that the corrosion products are bobbles-like and ball-like after corroded for 24 h. The bobbles-like product is mainly rare earth oxide， which evolves into flocculent with the increase of etching time. While the ball-like product is mainly iron oxide， which partially falls off with the increase of etching time， and the remaining corroded particles are concluded on the substrate， preventing further corrosion to some extent.
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2017, Vol. 27 
