CN100356487C - Method for increasing sintering Nd-Fe-B coercive force by adding nano-oxide in crystal boundary phase - Google Patents
Method for increasing sintering Nd-Fe-B coercive force by adding nano-oxide in crystal boundary phase Download PDFInfo
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- CN100356487C CN100356487C CN 200510049962 CN200510049962A CN100356487C CN 100356487 C CN100356487 C CN 100356487C CN 200510049962 CN200510049962 CN 200510049962 CN 200510049962 A CN200510049962 A CN 200510049962A CN 100356487 C CN100356487 C CN 100356487C
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Abstract
Description
Preparation technology | B r(kGs) | H cj(kOe) | (BH) max(MGOe) |
Single alloy technique | 13.52 | 11.3 | 42.13 |
The pairing gold process does not add nanometer Al 2O 3 | 13.50 | 12.08 | 42.56 |
The pairing gold process adds nanometer Al 2O 3 | 13.49 | 14.21 | 43.22 |
Preparation technology | B r(kGs) | H cj(kOe) | (BH) max(MGOe) |
Single alloy technique | 12.15 | 15.81 | 35.51 |
The pairing gold process does not add nanometer SiO 2 | 12.05 | 16.58 | 37.36 |
The pairing gold process adds nanometer SiO 2 | 12.02 | 17.02 | 38.43 |
Preparation technology | B r(kGs) | H cj(koe) | (BH) max(MGOe) |
The pairing gold process adds nanometer SiO 2、ZrO 2 | 12.20 | 16.53 | 37.18 |
Preparation technology | B r(kGs) | H cj(kOe) | (BH) max(MGOe) |
The pairing gold process adds nanometer SiO 2、Al 2O 3 | 13.2 | 14.69 | 42.38 |
Claims (4)
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CN 200510049962 CN100356487C (en) | 2005-06-06 | 2005-06-06 | Method for increasing sintering Nd-Fe-B coercive force by adding nano-oxide in crystal boundary phase |
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CN1688000A CN1688000A (en) | 2005-10-26 |
CN100356487C true CN100356487C (en) | 2007-12-19 |
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Assignee: Ningbo Permanent Magnetics Co., Ltd. Assignor: Zhejiang University Contract fulfillment period: 2007.12.30 to 2016.12.30 contract change Contract record no.: 2008990000574 Denomination of invention: Method for preparing sintered nd-fe-b magnet Granted publication date: 20071219 License type: Exclusive license Record date: 2008.10.8 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2007.12.30 TO 2016.12.30; CHANGE OF CONTRACT Name of requester: NINGBO YONGJIU MAGNETISM CO., LTD. Effective date: 20081008 |
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Granted publication date: 20071219 Termination date: 20160606 |