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US 11,721,460 B2Granted
Method for preparing metal powder, and metal powder
AssigneeLG Chem, Ltd.
InventorsJune Ho In, Soon Jae Kwon, Ik Jin Choi, Hyoun Soo Uh, Jung Won Park, Byung Kyu Lim, Pum Suk Park
Life of this patent
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Abstract
A method for preparing a metal powder includes preparing a mixture by mixing a fluoride of a group 1 element, a fluoride of a group 2 element or a transition metal fluoride, with neodymium oxide, boron, iron, and a reducing agent; and heating the mixture at a temperature of 800° C. to 1100° C.
Claims12
A method for preparing a metal powder, comprising:
- preparing a mixture by mixing neodymium oxide, boron, iron, and a reducing agent with at least one of a fluoride of a group 1 element, a fluoride of a group 2 element or a transition metal fluoride;
- molding the mixture to prepare a molded body after the preparing of the mixture,
- heating the molded body to a temperature of more than 800° C. to 1100° C. under an inert gas atmosphere;
- and
- forming the metal powder,
- wherein the metal powder is Nd2Fe14B,
- wherein the reducing agent is at least one of calcium, calcium hydride, or calcium carbide, and
- wherein a total content of the fluoride of the group 1 element, the fluoride of the group 2 element or the transition metal fluoride is 1 wt % to 10 wt % of the metal powder.
5 more elements
A method for preparing a metal powder, comprising:
- preparing a mixture by mixing neodymium oxide, boron, iron, and a reducing agent with at least one of a fluoride of a group 1 element, a fluoride of a group 2 element or a transition metal fluoride;
- heating the mixture to a temperature of 800° C. to 1100° C. under an inert gas atmosphere;
- and
- forming the metal powder,
- wherein the metal powder is Nd2Fe14B, and
- wherein the reducing agent is at least one of calcium, calcium hydride, or calcium carbide, and
- wherein the method does not include a pulverizing process,
- and the method does not include a surface treating process.
5 more elements
Dependencies are inferred from the claim text.