Influence of process parameters and alloy composition on structural, magnetic and electrical characteristics of Ni-Fe permalloys
Influence of process parameters and alloy composition on structural, magnetic and electrical characteristics of Ni-Fe permalloys
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DOI：
10.1016/j.jallcom.2006.11.048
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发表时间：
2007-01-21
影响因子：
6.2
通讯作者：
Sinha, S. K.
中科院分区：
文献类型：
--
作者：
Gupta, Kiran;Raina, K. K.;Sinha, S. K.
在氢气气氛下，通过改变退火温度、冷却速度和保温时间等工艺参数，对三种Ni-Fe基坡莫合金（Ni含量分别为82.13，79.90和47.01%）的结构、磁性和电学性能进行了研究。这些材料已被表征为各种磁性能，如剩磁，矫顽力，峰值磁导率和磁芯损耗下改变退火配置文件条件和相关的结果与XRD和微观结构观察。我们发现晶粒尺寸和有序化参数对合金的磁性能有显著的影响。82.13%Ni合金的磁性能优于其他两种合金，作为不同的工艺参数的函数。我们认为这是由于82.13%Ni合金的晶粒直径和短程有序（SRO）相对较大。该合金被测试用于手表机芯和音频头应用。我们发现，使用79.90%镍合金的手表机芯的电池寿命比使用47.01%镍合金的手表机芯的电池寿命提高了38%。此外，发现音频头性能更好的82.13%镍合金相比，79.90%镍合金。(c)2006 Elsevier B. V.保留所有权利。
Structural, magnetic and electrical studies have been carried out in three Ni-Fe based permalloys (82.13, 79.90 and 47.01% Ni) under hydrogen atmosphere by varying process parameters such as annealing temperature, cooling rate and holding time. These materials have been characterized for various magnetic properties such as remanence, coercivity, peak permeability and core loss under changed annealing profile conditions and correlated the results with XRD and microstructural observations. We found that grain diameter and ordering parameter have significant effect on the magnetic properties of the alloys. 82.13% Ni alloy is found to show better magnetic properties over the other two alloys as a function of different process parameters. We attribute it to relatively larger grain diameter and short-range order (SRO) developed in 82.13% Ni alloy over other two alloys. The alloys were tested for watch movement and audio head applications. We found that the battery life of the watch movement improved by 38% using 79.90% Ni alloy over 47.01% Ni alloy. Also, found that audio head performance is better with 82.13% Ni alloy as compared to 79.90% Ni alloy. (c) 2006 Elsevier B.V. All rights reserved.