Abstract: To provide an R—Fe—B-based rare earth magnet excellent in the squareness and magnetic properties at high temperatures, and a production method thereof. The present disclosure provides a rare earth magnet including a main phase 10 and a grain boundary phase 20 present. The overall composition of the rare earth magnet of the present disclosure is represented, in terms of molar ratio, by the formula: (R1(1-x)Lax)y(Fe(1-z)Coz)(100-y-w-v)BwM1v, wherein R1 is one or more predetermined rare earth elements, and M1 is one or more predetermined elements, and wherein 0.02?x?0.1, 12.0?y?20.0, 0.1?z?0.3, 5.0?w?20.0, and 0?v?2.0. The main phase 10 has an R2Fe14B-type crystal structure, the average particle diameter of the main phase 10 is from 1 to 10 ?m, and the volume ratio of a phase having an RFe2-type crystal structure in the grain boundary phase 20 is 0.60 or less relative to the grain boundary phase 20.

Abstract: To reduce an amount of use of a replacement gas used for replacing air in a container. A gas replacement system includes: a washing machine that washes the container with water; a filling machine that fills the container with a content fluid; a sealing machine that seals the container transferred from the filling machine; a chamber that covers the filling machine and the sealing machine, and contains a replacement gas; and a water discharge mechanism (washing machine) that discharges the water in the container having been carried into the chamber while containing the water out of the container in the chamber. The water in the container is replaced with an ambient gas in the chamber along with the discharge of the water.

Abstract: A rare earth magnet 100 including a main phase 10 and a grain boundary phase 20. The overall composition is represented by the formula: (R2(1-x)R1x)yFe(100-y-w-z-v)CowBzM1v.(R3(1-p)M2p)q. R1 is an element selected from Ce, La, Y, and Sc. R2 and R3 is an element selected from Nd, Pr, Gd, Tb, Dy, and Ho. M1 is a predetermined element, etc. M2 is a transition metal element, etc. The average particle dimeter of the main phase 10 is from 1 to 20 ?m. The main phase 10 has a core portion 12 and a shell portion 14. The thickness of the shell portion 14 is from 25 to 150 nm. The “a” is the ratio of the light rare earth element of the core portion 12 and the “b” is the ratio of the light rare earth element of the core portion 12. These satisfy 0?b?0.30 and 0?b/a?0.50.

Abstract: There is provided a filling-and-sealing device and a filling-and-sealing method capable of reducing an amount of use of a replacement gas used for replacing air in a container. The filling-and-sealing device includes a filling machine that fills a container with a content fluid; a sealing machine that seals the container transferred from the filling machine with a lid; a chamber that covers the filling machine and the sealing machine; a gassing system that replaces, in the chamber, a gas in the container with a carbon dioxide gas by introducing the carbon dioxide gas as a second replacement gas supplied from a tank; and a pre-gassing system that replaces the gas in the container with a first replacement gas that remains in the chamber containing the carbon dioxide gas before processing by the gassing system.

Abstract: To provide a rare earth magnet in which particles of SmFeN powder are bound using a Zn alloy powder, wherein generation of a knick at a magnetic field of around 0 is prevented, and a production method thereof. A rare earth magnet including a main phase containing Sm, Fe, and N, at least a part of the main phase having a Th2Zn17-type or Th2Ni17-type crystal structure, a sub-phase containing at least either Si or Sm, and Zn and Fe and being present around the main phase, and an intermediate phase containing Sm, Fe and N as well as Zn and being present between the main phase and the sub-phase, wherein the average Fe content in the sub-phase is 33 at % or less relative to the whole sub-phase, and the average total content of Si and Sm in the sub-phase is from 1.4 to 4.5 at % relative to the whole subs-phase.

Abstract: To provide a rare earth magnet in which particles of SmFeN powder are bound using a Zn powder, wherein generation of a knick at a magnetic field of around 0 is prevented and high residual magnetic flux density Br is thereby achieved, and a production method thereof. A rare earth magnet including a main phase containing Sm, Fe, and N, at least a part of the main phase having a Th2Zn17-type or Th2Ni17-type crystal structure, a sub-phase containing Zn and Fe and being present around the main phase, and an intermediate phase containing Sm, Fe and N as well as Zn and being present between the main phase and the sub-phase, wherein the average Fe content in the sub-phase is 33 at % or less relative to the whole sub-phase.

Abstract: To reduce an amount of use of a replacement gas used for replacing air in a container. A gas replacement system includes: a washing machine that washes the container with water; a filling machine that fills the container with a content fluid; a sealing machine that seals the container transferred from the filling machine; a chamber that covers the filling machine and the sealing machine, and contains a replacement gas; and a water discharge mechanism (washing machine) that discharges the water in the container having been carried into the chamber while containing the water out of the container in the chamber. The water in the container is replaced with an ambient gas in the chamber along with the discharge of the water.

Abstract: There is provided a filling-and-sealing device and a filling-and-sealing method capable of reducing an amount of use of a replacement gas used for replacing air in a container. The filling-and-sealing device includes a filling machine that fills a container with a content fluid; a sealing machine that seals the container transferred from the filling machine with a lid; a chamber that covers the filling machine and the sealing machine; a gassing system that replaces, in the chamber, a gas in the container with a carbon dioxide gas by introducing the carbon dioxide gas as a second replacement gas supplied from a tank; and a pre-gassing system that replaces the gas in the container with a first replacement gas that remains in the chamber containing the carbon dioxide gas before processing by the gassing system.

Abstract: A rare earth magnet production method of the present invention includes a placing step of placing a magnet material including a compact or a sintered body of powder particles having a rare earth magnet alloy, and a diffusing material containing a diffusing element to improve coercivity, in a vicinity of each other; and a diffusing step of diffusing the diffusing element into an inside of the magnet material by exposing the magnet material heated to vapor of the diffusing element evaporated from the diffusing material heated; and wherein the diffusing step is a step of heating the diffusing material independently of the magnet material to diffusing material temperature which is different from heating temperature of the magnet material called magnet material temperature.

Abstract: A method for producing a rare earth magnet material which allows efficient Dy or the like diffusion into an inside thereof. This method includes a preparation step of preparing a powder mixture of magnet powder including one or more rare earth elements including neodymium, boron, and the remainder being iron; and neodymium fluoride powder; a heating step of heating a compact of the powder mixture and causing oxygen around magnet powder particles to react with the fluoride powder, thereby obtaining a lump rare earth magnet material in which neodymium oxyfluoride is wholly distributed. The fluoride powder traps oxygen enclosed in the powder mixture and fixes the oxygen as stable NdOF. When Dy is diffused into this rare earth magnet material, Dy smoothly enters into its inside without being oxidized at grain boundaries. Consequently, coercivity of the entire rare earth magnet material can be efficiently increased without wasting scarce Dy.

Abstract: A process for producing a rare earth magnet comprises: an adhesion step of causing a diffusion element capable of diffusing inwardly to adhere to the surface part of a magnet material comprising a compact or sintered body of rare earth alloy particles; and an evaporation step of heating the magnet material in vacuum to evaporate at least a portion of the diffusion element having been retained on or in the surface part of the magnet material.

Abstract: A process for producing a rare earth magnet comprises: an adhesion step of causing a diffusion element capable of diffusing inwardly to adhere to the surface part of a magnet material comprising a compact or sintered body of rare earth alloy particles; and an evaporation step of heating the magnet material in vacuum to evaporate at least a portion of the diffusion element having been retained on or in the surface part of the magnet material.

Abstract: A rare earth magnet production method of the present invention includes a placing step of placing a magnet material including a compact or a sintered body of powder particles having a rare earth magnet alloy, and a diffusing material containing a diffusing element to improve coercivity, in a vicinity of each other; and a diffusing step of diffusing the diffusing element into an inside of the magnet material by exposing the magnet material heated to vapor of the diffusing element evaporated from the diffusing material heated; and wherein the diffusing step is a step of heating the diffusing material independently of the magnet material to diffusing material temperature which is different from heating temperature of the magnet material called magnet material temperature.

Abstract: A method for producing a rare earth magnet material which allows efficient Dy or the like diffusion into an inside thereof. This method includes a preparation step of preparing a powder mixture of magnet powder including one or more rare earth elements including neodymium, boron, and the remainder being iron; and neodymium fluoride powder; a heating step of heating a compact of the powder mixture and causing oxygen around magnet powder particles to react with the fluoride powder, thereby obtaining a lump rare earth magnet material in which neodymium oxyfluoride is wholly distributed. The fluoride powder traps oxygen enclosed in the powder mixture and fixes the oxygen as stable NdOF. When Dy is diffused into this rare earth magnet material, Dy smoothly enters into its inside without being oxidized at grain boundaries. Consequently, coercivity of the entire rare earth magnet material can be efficiently increased without wasting scarce Dy.

Abstract: A communication control apparatus that enables a personal computer usually connected to a LAN when in use to be connected temporarily to the same LAN from a different location and via a different communication device, while ensuring security without time and effort spent on configuration. A communication control apparatus connected to a LAN including a server, personal computers and communication devices (e.g., routers) that relay data between the server and the personal computers is provided with: a storage device that stores a scheduled time at which a personal computer is connected for use at another location in the same LAN, information of a communication device for the other location and configuration information of the communication device for enabling communication with the personal computer; and a timer indicating a time.

Abstract: A communication control apparatus that enables a personal computer usually connected to a LAN when in use to be connected temporarily to the same LAN from a different location and via a different communication device, while ensuring security without time and effort spent on configuration. A communication control apparatus connected to a LAN including a server, personal computers and communication devices (e.g., routers) that relay data between the server and the personal computers is provided with: a storage device that stores a scheduled time at which a personal computer is connected for use at another location in the same LAN, information of a communication device for the other location and configuration information of the communication device for enabling communication with the personal computer; and a timer indicating a time.