R-t-b based permanent magnet and raw alloy for the same
US-2015302959-A1 · Oct 22, 2015 · US
Reduced critical cerium-based high temperature magnet
US2024412902A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2024412902-A1 |
| Application number | US-202418640334-A |
| Country | US |
| Kind code | A1 |
| Filing date | Apr 19, 2024 |
| Priority date | Apr 21, 2023 |
| Publication date | Dec 12, 2024 |
| Grant date | — |
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Abstract
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A bulk permanent magnet composition comprising the formula (Ce 1-x M 1 x ) 2.7-(v+w) M 2 v (Fe 14-y Co y ) 1-z M 3 z B, or alternatively, (Ce 1-x M 1 x ) 2-v M 2 v (Fe 14-y Co y ) 1-z M 3 z B, wherein: M 1 represents at least one lanthanide element other than Ce; M 2 represents at least one element selected from the group consisting of Sn, Sb, Bi, Pb, Ca, Sr, and Zr; M 3 represents at least one element selected from the group consisting of Ti, Cr, Mn, Ni, Cu, Zn, Zr, Nb, Mo, W, Ta, and Hf; 0≤x<1; 0≤v≤1; 0≤y≤3; 0≤w≤0.8; and 0≤z≤1. Also described herein are methods for producing the permanent magnet.
First claim
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What is claimed is: 1 . A bulk permanent magnet composition comprising the formula (Ce 1-x M 1 x ) 2.7-(v+w) M 2 v (Fe 14-y Co y ) 1-z M 3 z B, wherein: M 1 represents at least one lanthanide element other than Ce; M 2 represents at least one element selected from the group consisting of Sn, Sb, Bi, Pb, Ca, Sr, and Zr; M 3 represents at least one element selected from the group consisting of Ti, Cr, Mn, Ni, Cu, Zn, Zr, Nb, Mo, W, Ta, and Hf; 0≤x<1; 0≤v≤1; 0≤y≤3; 0≤w≤0.8; and 0≤z≤1. 2 . The composition of claim 1 , wherein 0<x<1. 3 . The composition of claim 1 , wherein 0.1≤x<1. 4 . The composition of claim 1 , wherein 0.1≤x≤0.8. 5 . The composition of claim 1 , wherein 0<y≤3. 6 . The composition of claim 1 , wherein 0≤y≤2. 7 . The composition of claim 1 , wherein 0<y≤2. 8 . The composition of claim 1 , wherein M 1 represents at least La from among the one or more lanthanide elements. 9 . The composition of claim 1 , wherein M 1 represents La. 10 . The composition of claim 1 , wherein M 1 excludes Nd. 11 . The composition of claim 1 , wherein M 2 represents at least Bi and/or Zr from among the group consisting of Sn, Sb, Bi Pb, Ca, Sr, and Zr. 12 . The composition of claim 1 , wherein 0.01≤v≤1. 13 . The composition of claim 1 , wherein 0<v≤1. 14 . The composition of claim 1 , wherein 0<v≤0.4. 15 . The composition of claim 1 , wherein 0<v≤0.2. 16 . The composition of claim 1 , wherein 0.1≤v≤1. 17 . The composition of claim 1 , wherein 0<z≤1. 18 . The composition of claim 1 , wherein 0.01≤z≤1. 19 . The composition of claim 1 , wherein 0.1≤z≤1. 20 . The composition of claim 1 , wherein 0<v≤1 and 0<z≤1. 21 . The composition of claim 1 , wherein the composition comprises the sub-formula (Ce 1-x M 1 x ) 2-v M 2 v (Fe 14-y Co y ) 1-z M 3 z B. 22 . The composition of claim 21 , wherein 0.01≤v≤1. 23 . The composition of claim 21 , wherein 0.01≤z≤1. 24 . The composition of claim 21 , wherein z is 0 and the composition thus comprises the formula (Ce 1-x M 1 x ) 2-v M 2 v (Fe 14-y Co y )B. 25 . The composition of claim 24 , wherein 0.01≤v≤1.
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Classifications
- H01F1/0577Primary
sintered · CPC title
- H01F1/055Primary
and magnetic transition metals, e.g. SmCo5 · CPC title
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- What does patent US2024412902A1 cover?
- A bulk permanent magnet composition comprising the formula (Ce 1-x M 1 x ) 2.7-(v+w) M 2 v (Fe 14-y Co y ) 1-z M 3 z B, or alternatively, (Ce 1-x M 1 x ) 2-v M 2 v (Fe 14-y Co y ) 1-z M 3 z B, wherein: M 1 represents at least one lanthanide element other than Ce; M 2 represents at least one element selected from the group consisting of Sn, Sb, Bi, Pb, Ca, Sr, and Zr; M 3 represen…
- Who is the assignee on this patent?
- Ut Battelle Llc, Univ Iowa State Res Found Inc
- What technology area does this patent fall under?
- Primary CPC classification H01F1/0577. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Dec 12 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).