A sealing assembly (23) for a turbomachine (1) having a seal carrier (24) and a seal structure (30) configured on the seal carrier (24), the seal structure (30) having additively built-up projections (32) that extend in each case away from the seal carrier (24) to a free end (32.1), the projections (32) being constructed in each case to have a varying cross-sectional profile, namely a particular projection (32) in a section (33) that is distal to the seal carrier (24) having a smaller thickness (34) at the free end (32.1) than in a section (35) that is proximal to the seal carrier (24).

A step of, while a powder of an RLM alloy (where RL is Nd and/or Pr; M is one or more elements selected from among Cu, Fe, Ga, Co, Ni and Al) which is produced through atomization and a powder of an RH compound (where RH is Dy and/or Tb) are present on the surface of a sintered R-T-B based magnet, performing a heat treatment at a sintering temperature of the sintered R-T-B based magnet or lower is included. The RLM alloy contains RL in an amount of 65 at % or more, and the melting point of the RLM alloy is equal to or less than the temperature of the heat treatment. The heat treatment is performed while the RLM alloy powder and the RH compound powder are present on the surface of the sintered R-T-B based magnet at a mass ratio of RLM alloy:RH compound=9.6:0.4 to 5:5.

A step of, while a powder of an RLM alloy (where RL is Nd and/or Pr; M is one or more elements selected from among Cu, Fe, Ga, Co, Ni and Al) which is produced through atomization and a powder of an RH compound (where RH is Dy and/or Tb) are present on the surface of a sintered R-T-B based magnet, performing a heat treatment at a sintering temperature of the sintered R-T-B based magnet or lower is included. The RLM alloy contains RL in an amount of 65 at % or more, and the melting point of the RLM alloy is equal to or less than the temperature of the heat treatment. The heat treatment is performed while the RLM alloy powder and the RH compound powder are present on the surface of the sintered R-T-B based magnet at a mass ratio of RLM alloy:RH compound=9.6:0.4 to 5:5.

An improvement of coercive force of NdFeB base sintered magnet can be realized while suppressing a decrease in remanent magnetic flux density to the minimum using a method for modifying grain boundary which comprises heat-treating an NdFeB base magnet with a specific alloy disposed on its surface, the alloy having the following Formula 1:
R.sub.xA.sub.yB.sub.z(1)
wherein R represents at least one rare earth element including Sc and Y, A represents Ca or Li, B represents an unavoidable impurity, and 2x99, 1y<x, and 0z<y.

An improvement of coercive force of NdFeB base sintered magnet can be realized while suppressing a decrease in remanent magnetic flux density to the minimum using a method for modifying grain boundary which comprises heat-treating an NdFeB base magnet with a specific alloy disposed on its surface, the alloy having the following Formula 1:
R.sub.xA.sub.yB.sub.z(1)
wherein R represents at least one rare earth element including Sc and Y, A represents Ca or Li, B represents an unavoidable impurity, and 2x99, 1y<x, and 0z<y.

There is provided a method for producing a magnetic refrigeration module. The method comprises: a step (1) of preparing a mixture powder A containing an La(Fe,Si).sub.13-based alloy powder, an M powder, and optionally an organic binder, the La(Fe,Si).sub.13-based alloy powder having a main phase with an NaZn.sub.13-type crystal structure, and the M powder containing a metal and/or an alloy and having a melting point of 1090 C. or lower; a step (2) of subjecting the mixture powder A to a heat treatment in a reducing atmosphere at a temperature close to the melting point of the M powder to obtain a sintered body B; and a step (3) of subjecting the sintered body B to a hydrogenation treatment in a hydrogen-containing atmosphere.

There is provided a method for producing a magnetic refrigeration module. The method comprises: a step (1) of preparing a mixture powder A containing an La(Fe,Si).sub.13-based alloy powder, an M powder, and optionally an organic binder, the La(Fe,Si).sub.13-based alloy powder having a main phase with an NaZn.sub.13-type crystal structure, and the M powder containing a metal and/or an alloy and having a melting point of 1090 C. or lower; a step (2) of subjecting the mixture powder A to a heat treatment in a reducing atmosphere at a temperature close to the melting point of the M powder to obtain a sintered body B; and a step (3) of subjecting the sintered body B to a hydrogenation treatment in a hydrogen-containing atmosphere.

A solder material capable of suppressing the occurrence of electromigration is provided.

The solder material is core ball 1A which comprises spherical core 2A composed of Cu or a Cu alloy, and solder layer 3A coating core 2A, and wherein solder layer 3A has:

a Cu content of 0.1 mass % or more and 3.0 mass % or less,

a Bi content of 0.5 mass % or more and 5.0 mass % or less,

a Ag content of 0 mass % or more and 4.5 mass % or less, and

a Ni content of 0 mass % or more and 0.1 mass % or less,

with Sn being the balance.

A method of forming a sintered nickel-titanium-rare earth (NiTi-RE) alloy includes adding one or more powders comprising Ni, Ti, and a rare earth constituent to a powder consolidation unit comprising an electrically conductive die and punch connectable to a power supply. The one or more powders are heated at a ramp rate of about 35 C./min or less to a sintering temperature, and pressure is applied to the powders at the sintering temperature, thereby forming a sintered NiTi-RE alloy.

A process for producing nickel powder capable of obtaining fine nickel powder in wet process and capable of decreasing content of impurities by medicament used in crystallization of nickel powder. A process for producing nickel powder, including a crystallization step for obtaining nickel crystal powder by reduction reaction in reaction solution in which water-soluble nickel salt, alkali hydroxide and the sulfur-containing compound is a compound having any of sulfur-containing functional group structure represented by SH, sulfur-containing functional group structure represented by SS, sulfur-containing functional group structure, and a ratio of substance quantity of the sulfur-containing compound and nickel in the reaction solution, a multiplication factor of the sulfur-containing functional group of the sulfur-containing compound, and a ratio of substance quantity of the metal salt of metal more noble than nickel and nickel is in a range of 0.1A*B0.75C+30 (0C100).