Effects of Microadditions of Cerium on Annealing Embrittlement in FeBSi Glasses

摘要

Microadditions of cerium retard annealing embrittlement in some but not all metallic glass compositions in the FeBSi system. Effects on embrittlement of doping with both cerium and oxygen have been determined for a series of compositions, Fe/sub x/B sub 13 Si/sub 87-x/. For X greater than or equal to 80, cerium retards annealing embrittlement and oxygen promotes it, suggesting that the beneficial effect of cerium additions results from gettering of impurities. The results indicate that for those compositions in the FeBSi system with the highest values of the saturation magnetization, M/sub s/, microadditions of cerium can prevent annealing embrittlement until the onset of crystallization. (ERA citation 12:020533)