Abstract: The present invention provides a rare earth sintered magnet which contains R (R represents one or more rare earth elements essentially including Nd), T (T represents one or more iron group elements essentially including Fe), B, M1 (M1 represents one or more elements selected from among Al, Si, Cr, Mn, Cu, Zn, Ga, Ge, Mo, Sn, W, Pb and Bi) and M2 (M2 represents one or more elements selected from among Ti, V, Zr, Nb, Hf and Ta), while comprising an R2T14B phase as the main phase. This rare earth sintered magnet is characterized in that: the M1 is in an amount of from 0.5% by atom to 2% by atom; if (R), (T), (M2) and (B) are the respective atomic percentages of the above-described R, T, M2 and B, the relational expression (1) ((T)/14)+(M2)?(B)?((R)/2)+((M2)/2) is satisfied; and from 0.1% by volume to 10% by volume of all grain boundary phases in the magnet is composed of an R6T13M1 phase.

Abstract: A method for collecting a heavy rare earth element from a molten salt electrolysis residue and recycling the heavy rare earth element that includes mixing coarse particles of the molten salt electrolysis residue with a fluorinating material followed by firing to fluorinate the coarse particles, pulverizing the fluorinated coarse particles to obtain a powder, and mixing the powder with R, an R-M alloy, or an R-M-B alloy, where R is a rare earth element selected from Y, La, Ce, Nd, Pr, Sm, Gd, Dy, Tb, and Ho, M is a transition metal such as Fe or Co, and B is boron, heating and melting the mixture, separating a molten alloy from slag, and selectively extracting the heavy rare earth element into the molten alloy. The method can efficiently recycle a heavy rare earth element in an alloy form, useful for recycling a rare earth magnet.

Abstract: A vehicle seat, in which an occupant of a vehicle is to be seated, includes one or more vibration application units and a vibration application control processor. The one or more vibration application units are each configured to apply vibration to a portion of the vehicle seat. The portion is to be in contact with the occupant. The vibration application control processor is configured to cause each of the one or more vibration application units to vibrate with a vibration application waveform. The vibration application waveform includes a frequency component that is higher than or equal to 100 hertz and lower than or equal to 300 hertz and has an amplitude that varies in accordance with acceleration acting on the vehicle.

Abstract: An object of the present invention is to provide zirconium oxide nanoparticles having large particle diameters. The present invention is zirconium oxide nanoparticles wherein a ratio CD90/D50) of a cumulative 90% particle diameter D90 by volume to a cumulative 50% particle diameter D50 by volume in particle diameter measurement by a dynamic light scattering method is not larger than 3.0, and a half width for a (101) plane in XHD measurement in which CuK? rays are used as a light source is not larger than 1.20°. The zirconium oxide nanoparticles preferably have a diffusion coefficient in particle diameter measurement by a dynamic light scattering method of not larger than 7.0×10?7 cm2/sec.

Abstract: A rare earth sintered magnet is manufactured by preparing a R1-T-X sintered body having a major phase of R12T14X composition wherein R1 is a rare earth element(s) and essentially contains Pr and/or Nd, T is Fe, Co, Al, Ga, and/or Cu, and essentially contains Fe, and X is boron and/or carbon, forming an alloy powder containing 5?R2?60, 5?M?70, and 20<B?70, in at %, wherein R2 is a rare earth element(s) and essentially contains Dy and/or Tb, M is Fe, Cu, Al, Co, Mn, Ni, Sn, and/or Si, and B is boron, disposing the alloy powder on the sintered body, and heat treating the alloy-covered sintered body.

Abstract: Provided is an R—Fe—B-based sintered magnet which has a composition comprising R (wherein R represents at least one element selected from rare earth elements, and essentially contains Nd), B, M (wherein M represents at least one element selected from Si, Al, Mn, Ni, Co, Cu, Zn, Ga, Ge, Pd, Ag, Cd, In, Sn, Sb, Pt, Au, Hg, Pb and Bi), X (wherein X represents at least one element selected from Ti, Zr, Hf, Nb, V and Ta) and C, with a remainder comprising Fe, O and unavoidable impurities, and has a main phase comprising R2Fe14B and a grain boundary phase comprising an R—C phase having a higher R concentration and a higher C concentration than those in the main phase, the R—Fe—B-based sintered magnet being characterized in that the area ratio of the R—C phase in a cross section of the magnet is more than 0% and 0.5% or less.

Abstract: Provided is a magnetic refrigeration material whose magnetic transition temperature has been adjusted with high accuracy and which includes at least a first predetermined magnetic refrigeration material and a second predetermined magnetic refrigeration material which differs from the first magnetic refrigeration material. The absolute value of the difference between the magnetic transition temperature of the present magnetic refrigeration material and a target magnetic transition temperature is 0.7 K or less. The content of the first magnetic refrigeration material and the content of the second magnetic refrigeration material are determined by the magnetic transition temperatures of the first magnetic refrigeration material and the second magnetic refrigeration material and by a target magnetic transition temperature of the magnetic refrigeration material.

Abstract: A sintered rare-earth magnet contains specific amounts of R (two or more rare-earth elements, with Nd and Pr being essential), boron (B), M1 (one or more element selected from Al, Si, Cr, Mn, Cu, Zn, Ga, Ge, Mo, Sn, W, Pb and Bi) and M2 (one or more element selected from Ti, V, Zr, Nb, Hf and Ta), with the balance being T (one or more element selected from Fe and Co). The magnet has a R2Ti4B main phase and, over an area fraction of more than 0% and up to 10%, an R2(T, M1)17 phase covered with an R6(T, M1)14 phase and an R-rich phase. Two magnetization inflection points—a first knickpoint on a low magnetic field side and a second knickpoint on a high magnetic field side—are present in the second quadrant of the magnetic polarization curve at 23° C.

Abstract: A R-T-B sintered magnet comprising a main phase of R2Fe14B and a grain boundary phase exhibits a high Br and elevated-temperature stability. The magnet is composed of 12.5-17.0 atom % of R which is typically Nd and Pr, 4.5-5.5 atom % of B, at least 70 atom % of T which is Fe and Co, 0.1-3.0 atom % of M1 which is typically Al, Cu or Ga, 0.01-0.5 atom % of M2 which is typically Sn, 0.05-1.0 atom % of M3 which is typically Zr, and up to 0.8 atom % of O, and the balance of C, N and incidental impurities. The grain boundary phase contains a R-T-(M1, M2) phase and a R-M2-C phase.

Abstract: Provided are an injection molding machine and an injection molding method. An injection molding machine includes: a plasticizing unit which rotates a screw to plasticize a molding material inside a plastication cylinder, and an injection unit. The injection unit has: a plunger reciprocally moving inside an injection chamber, and an injection driving device reciprocally moving the plunger. By driving the injection driving device to move the plunger backward and forward inside the injection chamber, and driving a rotary driving device to alternately rotate the screw in a normal rotation direction and a reverse rotation direction, the molding material is controlled to reciprocate between the plastication cylinder and the injection chamber.

Abstract: Provided is a magnetic refrigeration material whose magnetic transition temperature has been adjusted with high accuracy and which includes at least a first predetermined magnetic refrigeration material and a second predetermined magnetic refrigeration material which differs from the first magnetic refrigeration material. The absolute value of the difference between the magnetic transition temperature of the present magnetic refrigeration material and a target magnetic transition temperature is 0.7 K or less. The content of the first magnetic refrigeration material and the content of the second magnetic refrigeration material are determined by the magnetic transition temperatures of the first magnetic refrigeration material and the second magnetic refrigeration material and by a target magnetic transition temperature of the magnetic refrigeration material.

Abstract: A method for collecting a heavy rare earth element from a heavy rare earth element-containing molten salt electrolysis residue and recycling the heavy rare earth element, the method includes: a step of mixing coarse particles of the molten salt electrolysis residue with a fluorinating material followed by firing, to fluorinate the coarse particles of the molten salt electrolysis residue; a step of pulverizing the coarse particles of the fluorinated molten salt electrolysis residue to obtain a powder of the molten salt electrolysis residue; and a step of mixing the powder of the molten salt electrolysis residue with R, an R-M alloy, or an R-M-B alloy (wherein R is one or more types of rare earth elements selected from the group consisting of Y, La, Ce, Nd, Pr, Sm, Gd, Dy, Tb, and Ho, M is a transition metal such as Fe or Co, and B is boron), heating and melting the mixture, separating a molten alloy from slag, and selectively extracting the heavy rare earth element into the molten alloy.

Abstract: There are provided a method for producing a magnetic refrigeration material whose magnetic transition temperature can be adjusted with high accuracy, and a magnetic refrigeration material whose magnetic transition temperature has been adjusted with high accuracy. The magnetic refrigeration material production method of the present invention includes the steps of: preparing a first predetermined magnetic refrigeration material and a second predetermined magnetic refrigeration material which differs from the first magnetic refrigeration material; and mixing the first magnetic refrigeration material and the second magnetic refrigeration material to obtain a third magnetic refrigeration material.

Abstract: In a sintered rare-earth magnet containing R2T14B main-phase grains (R being one or more element selected from rare-earth elements and T being one or more element selected from iron group elements), intergranular grain boundaries that from between two mutually adjoining main-phase grains and grain boundary triple junctions surrounded by three or more main-phase grains, the main-phase grains, the intergranular grain boundaries and the grain boundary triple junctions all include TiB2 crystals. The sintered rare-earth magnet is a to high-performance magnet of high coercivity and good squareness.

Abstract: Provided is a rare earth sintered magnet in which a multi-layer main phase particle having multiple layers including a layer 1 having R2 concentration, represented by at %, higher than that of a center of the particle, a layer 2 which is formed on the outside of the layer 1 and has R2 concentration lower than that of the layer 1, and a layer 3 which is formed on the outside of the layer 2 and has R2 concentration higher than that of the layer 2 is present at least in a portion in the vicinity of a surface of the main phase particle within at least 500 ?m from a surface of the sintered magnet body.

Abstract: A vehicle seat, in which an occupant of a vehicle is to be seated, includes one or more vibration application units and a vibration application control processor. The one or more vibration application units are each configured to apply vibration to a portion of the vehicle seat. The portion is to be in contact with the occupant. The vibration application control processor is configured to cause each of the one or more vibration application units to vibrate with a vibration application waveform. The vibration application waveform includes a frequency component that is higher than or equal to 100 hertz and lower than or equal to 300 hertz and has an amplitude that varies in accordance with acceleration acting on the vehicle.

Abstract: There are provided a method for producing a magnetic refrigeration material whose magnetic transition temperature can be adjusted with high accuracy, and a magnetic refrigeration material whose magnetic transition temperature has been adjusted with high accuracy. The magnetic refrigeration material production method of the present invention includes the steps of: preparing a first predetermined magnetic refrigeration material and a second predetermined magnetic refrigeration material which differs from the first magnetic refrigeration material; and mixing the first magnetic refrigeration material and the second magnetic refrigeration material to obtain a third magnetic refrigeration material.

Abstract: A vehicle operation detection device includes sensors laid out in a vehicle along an axis in an opening-closing direction of a door of the vehicle. When the user moves a part of a body toward the sensors and a motion of moving the part of the body along the axis is detected, the sensors detect an opening-closing operation for the door. The vehicle operation detection device further includes light-emitting members laid out in the vehicle along the axis in the opening-closing direction and an operation direction indicator configured to drive the light-emitting members in sequence in a first direction in a fully-closed state of the door and drives the light-emitting members in sequence in a second direction in a fully-open state of the door.

Abstract: When it is confirmed that a user exists based on an image of the situation outside a vehicle which is captured using a camera and a proximity sensor detects a fact that the user is approaching based on, for example, a putting of a hand of the user over the proximity sensor, a control device causes a ramp to be extended. As such, a user sitting in a wheelchair can cause the ramp to be extended by approaching the proximity sensor, such as the putting of the user's hand over the proximity sensor such that the user sitting in the wheelchair does not have to press an extension/storage button provided on the vehicle to cause the ramp to be extended.

Abstract: R—Fe—B sintered magnet has a main phase containing R2(Fe,(Co))14B intermetallic compound and a grain boundary phase. The inter-particle grain boundary includes an expanded width part that is surrounded by a narrow width part at which the inter-particle width is 10 nm or less and that has a structure distended in the inter-particle width direction as compared with the grain boundary width of the narrow width part; the inter-particle width at the expanded width part is at least 30 nm; Fe/R ratio in the expanded width part is 0.01-2.5; the main phase includes, in the surface part thereof, an HR-rich phase represented by (R?,HR)2(Fe,(Co))14B (R? represents rare-earth elements excluding Dy, Tb, and Ho, and that essentially include Nd; and HR represents Dy, Tb, and Ho); the contained amount of HR in the HR-rich phase is higher than that in the central part of the main phase.