[PDF] Top 20 Microstructure of Nd Rich Grain Boundary Phase in Die Upset Nd Fe Co Ga B Magnet

... Fig. 2 TEM bright field (BF) images of typical texture in the interior (a) and the interface regions (b) for the original melt-spun flake for the die- upset ... See full document

... netic Nd-rich boundary phases [2] which interrupts the intergrain exchange coupling ...the grain- boundary anisotropy (GBA) of the sintered magnet is mainly affected by the ... See full document

... and B, were prepared in this ...Sample B was subjected to post-sintering heat treatment at 853 K for ...easy magnet- ization ...the grain boundary structure: the latter technique is ... See full document

... the grain boundary structure whose restraints the reversal of magnetic domains (or passivation of the grain surface), because the coercivity mechanism is thought to be a nucleation type of reversed ... See full document

... the microstructure of Nd-Fe-B permanent magnets such as grain size, grain shape, and grain boundary composition influence the magnetization reversals and ...as ... See full document

... It can be seen from Fig. 3, that it is impossible to describe the dependence of the α(T) on a single relation. Therefore, the entire measurement interval was divided into areas in which the separate data processing was ... See full document

... of Nd 3+ ions as a function of the annealing temperature is manifestly cor- related with the one of ...and Nd 3+ ions, and, accordingly, the potential of sensitizing of ...of Nd 3+ is then explained ... See full document

... permanent magnet motor that is constructed by the action of the magnetic forces of a permanent magnet stator of a stator module and two thin ring permanent magnets of a rotor ...permanent magnet ... See full document

... neodymium magnet for wind turbine application in terms of cost of energy, power production and high temperature if the masses of ferrite magnets are not a big issue [5], ...flux-concentrating Nd- ... See full document

... atmosphere. Prior to melting the sample, a piece of Ti metal was melted inside the chamber in order to trap the oxygen, if any, present in the Ar atmosphere. The ingots were melted four times to ensure homogeneity. The ... See full document

... Magnetic composite materials with varied content of Nd ­ Fe ­ B particles in epoxy matrix are examined from a dynamic mechanical perspective. Structural, viscoelastic and magnetic properties of ... See full document

... WC die (sintered with about 9 wt% Co as the sintering aid) with inner diameter of 20 ...The die set under application of the pressure was heated bythe pulsating current under vacuum and kept at each ... See full document

... over phase stoichiometry exist and (ii) structure determination using powder diffraction methods, linked to confirmation of phase stoichiometry, is complicated by mixed and/or partial occupancy of some Li ... See full document

... the SAD pattern shows the disappearance of some discon- tinuous Debye rings corresponding to crystalline compound phases as indicated by arrow B. Broad halo rings appear accompanied by Debye rings corresponding to ... See full document

... sample has a smooth surface with good metallic luster and no distinct ruggedness due to the precipitation of a crystalline phase is seen on the outer surface. Figure 6 shows an X-ray diffraction pattern of the ... See full document

... Fe­Nd phase diagram using the experimental data obtained from the liter- ature 7 ­ 10,15 ­ 19) ...liquid phase at high temperatures does not appear until 10,000 K in this calculated phase ... See full document

... sac 3.5 cm ND EU,FL ND ND doppler -Lt A.mass ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ectopic ectopic ectopic ectopic ectopic ectopic ectopic ectopic ectopic ectopic e[r] ... See full document

... A strong dependence on the concentration of particles, as well as the type of particles was observed as well. While the tensile strength of PPS compounds decreased in general with increasing volume percentage of ... See full document

... The thermal expansion of permanent magnets was investigated using a DIL-402C horizontal dilatometer [8] with holder and pushrod made of fused silica or sintered alumina. The elongation was measured by an inductive linear ... See full document

... of Nd-rich phases is a HCP structure with the lattice parameters a ¼ 0:383 nm and c ¼ 0:600 nm [8], which was proposed arising from the decomposi- tion of matrix phase (Nd 2 Fe l4 ... See full document