Evolution of strength and coercivity during annealing of FeCo based alloys
نویسنده
چکیده
Iron-cobalt alloys are used as soft-magnetic materials in circumstances where a high magnetic saturation is important. There is confusion in the literature about the cause of an observed discontinuity in the variation of strength and coercivity as a function of the temperature at which cold-rolled Fe-Co alloys are annealed. It is shown here using calculations based on published data, that the variety of observations can be reconciled on the basis of grain growth rather than the extent of recrystallisation.
منابع مشابه
Optimization of the FeCo nanowire fabrication embedded in anodic aluminum oxide template by response surface methodology
Anodic aluminum oxide (AAO) fabricated by two step anodization technique, is used as a template to synthesize FeCo nanowire arrays by AC electrodeposition technique. Response surface methodology (RSM) is applied to design the experiments, fit an empirical model and optimize the conditions to achieve the best magnetic properties. The magnetic properties, pore dimensions, composition and structur...
متن کاملFeCo-BASED SOFT MAGNETIC NANOCRYSTALLINE ALLOYS
The influence of microstructure on the magnetic properties is studied in series of of FeCoNbB, FeCoZrB and FeCoMoBCu amorphous and nanocrystalline alloys with different amount of crystalline phase.V arious thermomagnetic treatments have been used in order to tailor the soft magnetic characteristics of these alloys for potential applications. We report on a beneficial effect of both longitudinal...
متن کاملتوسعه لایههای نازک پر انرژی بر پایه مغناطیسهای نادر خاکی تبادلی ارتجاعی با ترکیب NdFeB/FeCo
In this study, nine Nd-Fe-B and FeCe thin films with 10-50 nanometers width were prepared by RF magnetron sputtering on the Si/SiO2 substrate. Then, the films were annealed at 800 oC for 5 sec in rapid thermal annealing furnace. X-ray diffractometry (XRD) was used to analyze the phase composition of layers and existance of Nd2F14 and Fe65Co35 phase was confirmed, without formation of any o...
متن کاملخواص مغناطیسی نانو ذرات FeCo برای ذخیره سازی اطلاعات
Submicron FeCo magnetic grains with different percents of cobalt were grown in the presence of magnetic field. After omitting the excess ions and oxygen, heat treatment was performed and some samples were oriented in a polymer background in the presence of a magnetic field. The results of SEM, XRD, and magnetic measurements confirm the existence of induced magnetic anisotropy. As the strength...
متن کاملNear equiatomic FeCo alloys: constitution, mechanical and magnetic properties
Alloys based on the near-equiatomic FeCo offer exceptional magnetic properties. The equiatomic alloy was ‘invented’ in 1929, it offers a saturation hardly lower than that of the maximum obtained for Fe-0.35Co, with higher permeability and a lower coercivity than the latter. However, this alloy remained without industrial application, mainly because of its extreme brittleness. Only with the addi...
متن کامل