Influence of nickel addition on magnetic and electro-mechanical behaviour of permalloys

[摘要] Magnetic and electro-mechanical investigations have been carried out in two Niâ€�?�Fe permalloys under hydrogen atmosphere by varying annealing temperature. These alloys have been characterized for various magnetic parameters like peak permeability, coercivity and core loss under changed annealing profile conditions. The magnetic properties of Ni-rich (Ni ∼ 82%) alloy at 100 Hz were found to be better than the low Ni (Ni ∼ 47%) alloy. The alloys were tested for watch movement and found that the battery life of the watch movement improved by 38% using Ni-rich permalloy.

[学科分类] 材料工程

[关键词] Ni-rich alloy;low Ni alloy;annealing temperature;magnetic properties;electro-mechanical behaviour.