Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
FERRITE CALCINED BODY, METHOD FOR PRODUCING FERRITE SINTERED MAGNET, AND FERRITE SINTERED MAGNET
A method comprising the steps of mixing raw material powders to a composition comprising metal elements of Ca, La, Sr, Ba, Fe and Co, whose atomic ratios are represented by the general formula of Ca 1-x-y La x (Sr y' Ba 1-y' ) y Fe 2n-z Co z , wherein 1-x-y, x and y are values in a region defined by a coordinate a: (0.470, 0.297, 0.233), a coordinate b: (0.300, 0.392, 0.308), a coordinate c: (0.300, 0.300, 0.400), a coordinate d: (0.400, 0.200, 0.400) and a coordinate e: (0.470, 0.200, 0.330) in a ternary diagram of x, y, and 1-x-y; y' and z, and n representing a molar ratio meet 0.5 ¤ y' ¤ 1, 0.2 ¤ z < 0.25, and 5.2 < n < 5.6; calcining the raw material powder mixture; pulverizing the calcined body; molding the calcined powder; and sintering the resultant green body; 0.1% or more and less than 1.5% by mass of SiO 2 being added to the raw material powder mixture, the calcined body or the calcined powder; and 0-2% by mass (as CaO) of CaCO 3 being added to the calcined body or the calcined powder.
FERRITE CALCINED BODY, METHOD FOR PRODUCING FERRITE SINTERED MAGNET, AND FERRITE SINTERED MAGNET
A method comprising the steps of mixing raw material powders to a composition comprising metal elements of Ca, La, Sr, Ba, Fe and Co, whose atomic ratios are represented by the general formula of Ca 1-x-y La x (Sr y' Ba 1-y' ) y Fe 2n-z Co z , wherein 1-x-y, x and y are values in a region defined by a coordinate a: (0.470, 0.297, 0.233), a coordinate b: (0.300, 0.392, 0.308), a coordinate c: (0.300, 0.300, 0.400), a coordinate d: (0.400, 0.200, 0.400) and a coordinate e: (0.470, 0.200, 0.330) in a ternary diagram of x, y, and 1-x-y; y' and z, and n representing a molar ratio meet 0.5 ¤ y' ¤ 1, 0.2 ¤ z < 0.25, and 5.2 < n < 5.6; calcining the raw material powder mixture; pulverizing the calcined body; molding the calcined powder; and sintering the resultant green body; 0.1% or more and less than 1.5% by mass of SiO 2 being added to the raw material powder mixture, the calcined body or the calcined powder; and 0-2% by mass (as CaO) of CaCO 3 being added to the calcined body or the calcined powder.
FERRITE CALCINED BODY, METHOD FOR PRODUCING FERRITE SINTERED MAGNET, AND FERRITE SINTERED MAGNET
KALZINIERTER FERRITKÖRPER, VERFAHREN ZUR HERSTELLUNG EINES FERRIT-SINTERMAGNETS UND FERRIT-SINTERMAGNET
CORPS CALCINÉ DE FERRITE, PROCÉDÉ DE PRODUCTION D'UN AIMANT FRITTÉ DE FERRITE ET AIMANT FRITTÉ DE FERRITE
ODA ETSUSHI (Autor:in) / IWASAKI HIROSHI (Autor:in)
18.12.2019
Patent
Elektronische Ressource
Englisch
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