New magnets from interstitial intermetallics

New Magnets from Interstitial Intermetallics

The outlook for improving the energy product of permanent magnets beyond the theoretical limit of 516kJ/m3 for Nd,Fe,,B is discussed. Most promising are nanostructured two-phase magnets consisting of an aligned hard-magnetic skeleton phase possessing exceptionally high uniaxial anisotropy and a soft-magnetic phase which assures a high magnetization. Brown’s paradox is discussed for inhomogeneou...

Interstitial modification of rare-earth intermetallics

Gas Phase Interstitial Modification of Rare-earth Intermetallics

Magnesium - rich Intermetallics RE

The magnesium-rich intermetallic phases RE3RuMg7 (RE = Y, Nd, Dy, Ho) have been synthesized from the elements in sealed niobium ampoules and subsequently characterized by powder X-ray diffraction. The structure of the dysprosium compound was refined on the basis of single-crystal X-ray diffractometer data: Ti6Sn5 type, P63/mmc, a = 1019.1(2), c = 606.76(9) pm, wR2 = 0.0159, 439 F2 values, 19 va...

Intermetallics in Solder Joints

Introduction Intermetallic compounds (IMCs) are generally considered a bad thing in solder joints, though this is not always the case. Excessive IMCs in solder joints are a bad thing since they significantly alter both the composition and the mechanical performance of the solder joint. Interfacial IMC layers can be an indication of the quality of the solder joint and the lack of them would indi...