【摘要】 采用特制的冷却结晶器制备出了细小等轴晶的钯铁合金铸锭,利用差热分析研究了钯铁合金的有序化转变规律,以及有序化转变对合金电学性能的影响,结果表明,Fe含量为15%~25%的PdFe合金中存在Pd3Fe有序相,合金在750~850℃范围内发生有序相转变,保温9 h有序化转变基本完成,Φ0.02 mm的Pd3Fe有序相合金细丝的电阻温度系数高达(6150~7650)×10-6/℃。更多还原

【Abstract】 The Pd-Fe alloy ingot with fine and equiaxed grains was prepared using the special solidification method. The orderly transition rules of PdFe alloy with different compositions were studied by differential thermal analysis. The relationship between the orderly transition and electrical properties of PdFe alloy was also studied. There was Pd3Fe ordered phase transition in the PdFe alloys with 15%~25% Fe and at 750~850℃ for 9 hours. The fine wire of 0.02 mm in diameter of Pd3Fe ordered phase has high temperature coefficient of resistance(6150~7650)×10-6/℃.更多还原