Yttrium-added rare earth permanent magnet material and preparation method therefor

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12129532
APP PUB NO 20210156009A1
SERIAL NO

16612290

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

The present invention discloses an yttrium-added rare earth permanent magnet material and a preparation method therefor. The chemical formula of the material is expressed as (YxRe1-x)aFe100-a-b-cMbBc according to the mass percentage, wherein 0.05≤x≤0.5, 20≤a≤28, 0.5≤b≤2, 0.5≤c≤1.5, Re is Nd and/or Pr, and M is Al and/or Nb. According to the present invention, the relatively surplus and inexpensive rare earths yttrium and cerium are used to replace Nd and/or Pr in NdFeB. By controlling the ratio of the rare earth elements such as yttrium, cerium and neodymium, and adding an appropriate amount of Nb and/or Al element, the rare earth elements are used in a comprehensive and balanced manner while better magnetic properties are maintained.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
GRIREM ADVANCED MATERIALS CO LTD100088 2 XINJIE STREET XICHENG DISTRICT BEIJING BEIJING CITY BEIJING CITY 100088
GUOKE RE ADVANCED MATERIALS CO LTDINGDU VILLAGE EAST YANJIAO SANHE TOWN LANGFANG CITY HEBEI 065201

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Luo, Yang Beijing, CN 93 348
Peng, Haijun Beijing, CN 10 7
Quan, Ningtao Beijing, CN 4 2
Xie, Jiajun Beijing, CN 12 6
Yang, Yuanfei Beijing, CN 13 9
Yu, Dunbo Beijing, CN 20 24
Zhang, Caohuan Beijing, CN 1 0

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 Apr 29, 2028
7.5 Year Payment $3600.00 $1800.00 $900.00 Apr 29, 2032
11.5 Year Payment $7400.00 $3700.00 $1850.00 Apr 29, 2036
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00