Abstract: A sealing device is disposed between an inner member and an outer member that rotate relative to each other to seal a gap between the inner member and the outer member of the sealing device, and includes a first sealing member including a cylindrical part to be mounted to the outer member, and an annular part that extends radially inward from the cylindrical part toward the inner member; and a second sealing member including a sleeve to be mounted to the inner member, and a flange that extends radially outward from the sleeve, the flange facing the annular part of the first sealing member. The first sealing member includes at least three axial lips made from an elastic material that extends from the annular part toward the flange of the second sealing member. An axial lip disposed radially outer side has an interference that is greater than that of an axial lip disposed radially inner side.

Abstract: Provided is a ferrite sintered magnet including a ferrite phase having a magnetoplumbite-type crystal structure. x, y, and m satisfy the following Equations (1), (2), and (3) when composition of the ferrite sintered magnet is represented by R1-xAxFem-yCoy, where R denotes at least one kind of element selected from rare earth elements including Y and A denotes Ca or Ca and elements including at least one kind selected from Sr or Ba. The content of B in the ferrite sintered magnet is from 0.1% to 0.6% by mass in terms of B2O3. 0.2?x?0.8??(1) 0.1?y?0.

Abstract: Provided is a ferrite sintered magnet including a ferrite phase having a magnetoplumbite-type crystal structure. x, y, and m satisfy the following Equations (1), (2), and (3) when composition of the ferrite sintered magnet is represented by R1-xAxFem-yCoy, where R denotes at least one kind of element selected from rare earth elements including Y and A denotes Ca or Ca and elements including at least one kind selected from Sr or Ba. The content of B in the ferrite sintered magnet is from 0.1% to 0.6% by mass in terms of B2O3. 0.2?x?0.8??(1) 0.1?y?0.

Abstract: Provided is a ferrite sintered magnet including a main phase formed of ferrite having a hexagonal magnetoplumbite type crystalline structure, in which the main phase contains Fe and Co, and the ferrite sintered magnet contains CaB2O4. CaB2O4 is contained in a heterophase that is a crystalline phase different from the main phase, and an area ratio of CaB2O4 to the entire cross-sectional surface of a sintered magnet, is less than or equal to 2%.

Abstract: A ferrite sintered magnet contains a main phase formed of ferrite having a hexagonal magnetoplumbite type crystalline structure; a first subphase containing La, Ca, and Fe, in which an atomic ratio of La is higher than that of the main phase, and the atomic ratio of La is higher than an atomic ratio of Ca; and a second subphase containing La, Ca, Si, B, and Fe, in which an atomic ratio of Ca is higher than an atomic ratio of La, an atomic ratio of B is higher than an atomic ratio of Fe, and the atomic ratio of Fe is lower than that of the main phase. An area ratio of the second subphase on a cross-sectional surface of the ferrite sintered magnet is greater than or equal to 1%.

Abstract: Provided is a ferrite sintered magnet including a ferrite phase having a magnetoplumbite-type crystal structure. x, y, and m satisfy the following Equations (1), (2), and (3) when composition of the ferrite sintered magnet is represented by R1-xAxFem-yCoy, where R denotes at least one kind of element selected from rare earth elements including Y and A denotes Ca or Ca and elements including at least one kind selected from Sr or Ba. The content of B in the ferrite sintered magnet is from 0.1% to 0.6% by mass in terms of B2O3. 0.2?x?0.8??(1) 0.1?y?0.

Abstract: Provided is a ferrite sintered magnet including a main phase formed of ferrite having a hexagonal magnetoplumbite type crystalline structure, in which the main phase contains Fe and Co, and the ferrite sintered magnet contains CaB2O4. CaB2O4 is contained in a heterophase that is a crystalline phase different from the main phase, and an area ratio of CaB2O4 to the entire cross-sectional surface of a sintered magnet, is less than or equal to 2%.

Abstract: A ferrite sintered magnet contains a main phase formed of ferrite having a hexagonal magnetoplumbite type crystalline structure; a first subphase containing La, Ca, and Fe, in which an atomic ratio of La is higher than that of the main phase, and the atomic ratio of La is higher than an atomic ratio of Ca; and a second subphase containing La, Ca, Si, B, and Fe, in which an atomic ratio of Ca is higher than an atomic ratio of La, an atomic ratio of B is higher than an atomic ratio of Fe, and the atomic ratio of Fe is lower than that of the main phase. An area ratio of the second subphase on a cross-sectional surface of the ferrite sintered magnet is greater than or equal to 1%.

Abstract: Provided is, in a fresh water generation system, a bactericide dosing method for suppressing growth of biofouling by mixing waters to be treated having different water qualities from each other in order to reduce the amount of energy required to generate fresh water. The present invention relates to a fresh water generation system and a fresh water generation method for obtaining fresh water from water to be treated A1 and dilution water B1 having different osmotic pressures from each other as raw waters, using desalination technique.