Method for preparing metal powder and method for evaluating raw material or diluting salt for use therein
Опубликовано: 25-05-2004
Автор(ы): Kazuya Maeda, Syuichi Takeda
Принадлежит: Cabot Supermetals KK
Реферат: The present invention provides a method for producing a tantalum or niobium powder which controls releasing and contamination of impurities such as Fe, Ni, Cr, and Mo, which are derived from a reaction vessel, to a range in which characteristics of tantalum or niobium are not influenced. The method for producing a tantalum or niobium powder of the present invention is a method in which a metal salt containing tantalum or niobium is reduced in a diluent salt to obtain a tantalum or niobium powder, wherein a total percentage ofmoisture in the metal salt and the diluent salt is 0.2% by mass or less, as determined by the karl Fisher method based on an amount of moisture generated by heating the metal salt and the diluent salt to 600 DEG C.
PRODUCTION METHOD FOR PHOSPHATE-COATED SmFeN-BASED ANISOTROPIC MAGNETIC POWDER, AND BONDED MAGNET
Номер патента: US20230415227A1. Автор: Shuichi Tada,Masahiro Abe,Satoshi Yamanaka,Kenta Iwai. Владелец: Nichia Corp. Дата публикации: 2023-12-28.