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Recently, nanocrystalline Fe-Si-B-P-Cu soft magnetic alloys, NANOMET® with high Fe contents of above 83 at% have attracted much attention as a future core material for high performance magnetic applications because of their high magnetic flux density (Bs ∼ 1.80 T), low coercivity (Hc), significantly low core loss (W) and low materials cost [1]-[3]. Small addition of Co (∼ 4 to 5 at%) is shown to be...
Understanding the residual stress state in brazed joints is crucial for operational design and life time performance of the part in service. High magnitude residual stresses are expected in the joined materials following cooling from brazing temperatures (≈950C) due to large mismatches in material properties such as coefficient of thermal expansion and Young's modulus (E). This paper aims to further...
In this research, the magnetic properties of Ni78Fe22 thin films by low doping of Tb additives are investigated. The composition of the films was determined by energy dispersive X-ray fluorescence spectrometer (EDS), and the structure of the films with different concentration of Tb was investigated by X-ray diffraction (XRD). The static magnetic properties were measured by Vibrating Sample magnetometer...
Ball milling is an effective way of producing defective and nanostructured graphite. In this work, graphite was milled under 3 bar hydrogen in a tungsten carbide milling pot, and the effect of milling conditions on the microstructure and hydrogen storage properties was investigated by TGA-Mass Spectrometry, XRD, SEM and Raman spectroscopy. After milling for 10 hours, 5.5 wt% hydrogen was released...
The authors studied the influence of microstructure and grain size, as well as Curie temperature, on the low-temperature aged Sm(Co0.45Cu0.4Fe0.15)5 alloy in relation to enhanced coercivity. Melt-spinning has been employed in order to achieved a wide range of grain sizes from micro- to nanometer level. XRD and TEM analysis were used to study the structure of as-spun ribbons and SQUID magnetometer...
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