KR100607293B1 - 내식성 피막을 갖는 Fe-B-R 계 영구자석 및 그의 제조방법 - Google Patents
내식성 피막을 갖는 Fe-B-R 계 영구자석 및 그의 제조방법 Download PDFInfo
- Publication number
- KR100607293B1 KR100607293B1 KR1019990036546A KR19990036546A KR100607293B1 KR 100607293 B1 KR100607293 B1 KR 100607293B1 KR 1019990036546 A KR1019990036546 A KR 1019990036546A KR 19990036546 A KR19990036546 A KR 19990036546A KR 100607293 B1 KR100607293 B1 KR 100607293B1
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- South Korea
- Prior art keywords
- film
- metal
- magnet
- oxide film
- permanent magnet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- LJCNRYVRMXRIQR-OLXYHTOASA-L potassium sodium L-tartrate Chemical compound [Na+].[K+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O LJCNRYVRMXRIQR-OLXYHTOASA-L 0.000 description 1
- XPGAWFIWCWKDDL-UHFFFAOYSA-N propan-1-olate;zirconium(4+) Chemical compound [Zr+4].CCC[O-].CCC[O-].CCC[O-].CCC[O-] XPGAWFIWCWKDDL-UHFFFAOYSA-N 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000006903 response to temperature Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004626 scanning electron microscopy Methods 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 235000011006 sodium potassium tartrate Nutrition 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical group [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 1
- JMXKSZRRTHPKDL-UHFFFAOYSA-N titanium ethoxide Chemical compound [Ti+4].CC[O-].CC[O-].CC[O-].CC[O-] JMXKSZRRTHPKDL-UHFFFAOYSA-N 0.000 description 1
- WOZZOSDBXABUFO-UHFFFAOYSA-N tri(butan-2-yloxy)alumane Chemical compound [Al+3].CCC(C)[O-].CCC(C)[O-].CCC(C)[O-] WOZZOSDBXABUFO-UHFFFAOYSA-N 0.000 description 1
- OBROYCQXICMORW-UHFFFAOYSA-N tripropoxyalumane Chemical compound [Al+3].CCC[O-].CCC[O-].CCC[O-] OBROYCQXICMORW-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 238000005019 vapor deposition process Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- 150000003755 zirconium compounds Chemical class 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
- H01F41/026—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets protecting methods against environmental influences, e.g. oxygen, by surface treatment
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12465—All metal or with adjacent metals having magnetic properties, or preformed fiber orientation coordinate with shape
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
- Y10T428/12611—Oxide-containing component
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
- Hard Magnetic Materials (AREA)
Abstract
Description
Al 화합물 | 촉매 | 안정제 | 유기용매 | |
실시예 1 | 알루미늄 이소프로폭시드 | 질산 | 아세틸아세톤 | 에탄올 |
실시예 2 | 알루미늄 부톡시드 | 질산+아세트산 | 에틸 아세토아세테이트 | 에탄올+IPA |
실시예 3 | 알루미늄 이소프로폭시드 | 질산 | 아세틸아세톤 | 에탄올 |
실시예 4 | 알루미늄 부톡시드 | 질산+아세트산 | 에틸 아세토아세테이트 | 에탄올+IPA |
실시예 5 | 알루미늄 부톡시드 | 염산 | 첨가되지 않음 | 2-메톡시에탄올 |
Al 화합물의 비율(Al2O3의 중량%로) | 몰비 | 점성도 (cP) | pH | |||
촉매/ Al 화합물 | 안정제/ Al 화합물 | 물/ Al 화합물 | ||||
실시예 1 | 8 | 0.001 | 1.5 | 5 | 3.6 | 3.1 |
실시예 2 | 5 | 0.01(질산) 2(아세트산) | 1 | 1 | 2.3 | 3.9 |
실시예 3 | 8 | 0.001 | 1.5 | 5 | 3.6 | 3.1 |
실시예 4 | 5 | 0.01(질산) 2(아세트산) | 1 | 1 | 2.3 | 3.9 |
실시예 5 | 1 | 0.005 | 0 | 0 (주.1) | 2.0 | 2.4 |
인상율 (cm/min) | 열처리 | 주 | |
실시예 1 | 5 | 200℃ ×20min | |
실시예 2 | 5 | 350℃ ×20min | |
실시예 3 | 5 | 200℃ ×20min | |
실시예 4 | 5 | 350℃ ×20min | |
실시예 5 | 5 | 200℃ ×10min | 인상 및 열처리가 5회 반복됨 |
내식 시험전 | 내식 시험후 | 시험후 외관 | |||||
Br(kG) | iHc (kOe) | (BH)max (MGOe) | Br(kG) | iHc (kOe) | (BH)max (MGOe) | ||
실시예 1 | 11.3 | 16.6 | 30.4 | 11.2 | 16.4 | 29.7 | 변화없음 |
실시예 2 | 11.3 | 16.6 | 30.5 | 11.3 | 16.5 | 29.9 | 변화없음 |
비교예 1 | 11.3 | 16.7 | 30.5 | 10.4 | 15.6 | 27.3 | 부문 부식 |
비교예 2 | 11.4 | 16.6 | 30.6 | 10.0 | 15.2 | 26.5 | 전체면상에 거의 부식없음 |
내식 시험전 | 내식 시험후 | 시험후 외관 | |||||
Br(kG) | iHc (kOe) | (BH)max (MGOe) | Br(kG) | iHc (kOe) | (BH)max (MGOe) | ||
실시예 3 | 11.4 | 16.7 | 30.6 | 11.1 | 16.3 | 29.6 | 변화없음 |
실시예 4 | 11.3 | 16.6 | 30.5 | 11.3 | 16.5 | 29.9 | 변화없음 |
실시예 5 | 11.4 | 16.6 | 30.6 | 11.4 | 16.5 | 30.0 | 변화없음 |
비교예 3 | 11.4 | 16.7 | 30.6 | 10.3 | 15.3 | 27.5 | 부문 부식 |
비교예 4 | 11.4 | 16.6 | 30.5 | 10.8 | 16.0 | 28.6 | Ni 막이 부분 박리 |
금속화합물 | 촉매 | 안정제 | 유기용매 | |
실시예 6 | 테트라메톡시실란 | 질산 | 무첨가 | 에탄올 |
실시예 7 | 지르코늄 이소프록시드 | 질산 | 아세틸 아세톤 | 에탄올 |
실시예 8 | 티타늄 이소프록시드 | 질산 | 무첨가 | 에탄올 |
실시예 9 | 테트라에톡시 실란 | 아세트산 | 무첨가 | 에탄올+IPA |
실시예 10 | 지르코늄 부톡시드 | 아세트산 | 에틸 아세토아세테이트 | 에탄올+IPA |
실시예 11 | 티타늄 부톡시드 | 염산 | 아세틸 아세톤 | 에탄올+IPA |
금속화합물의 비율(중량%) | 몰비 | 점성 (cP) | pH | |||
촉매/ 금속화합물 | 안정제/ 금속화합물 | 물/ 금속화합물 | ||||
실시예 6 | 10(주.1) | 0.001 | 0 | 1 | 1.8 | 3.2 |
실시예 7 | 3(주.2) | 0.001 | 1 | 5 | 1.8 | 3.4 |
실시예 8 | 3(주.3) | 0.002 | 0 | 1 | 2.1 | 2.1 |
실시예 9 | 5(주.1) | 2 | 0 | 5 | 1.4 | 4.2 |
실시예 10 | 5(주.2) | 2 | 1.5 | 1 | 1.7 | 4.0 |
실시예 11 | 5(주.3) | 0.005 | 1.5 | 3 | 1.8 | 2.6 |
인상율 (cm/min) | 열처리 | 주 | |
실시예 6 | 5 | 100℃ ×20min | |
실시예 7 | 10 | 200℃ ×20min | |
실시예 8 | 10 | 200℃ ×20min | |
실시예 9 | 10 | 200℃ ×20min | |
실시예 10 | 10 | 350℃ ×20min | |
실시예 11 | 10 | 350℃ ×20min |
금속산화물 막 | 두께 (㎛) | 막내의 C의 양 (ppm) | 막의 구조 | |
실시예 6 | Si 산화물피막 | 0.3 | 350 | 비결정질 |
실시예 7 | Zr 산화물피막 | 0.3 | 380 | 비결정질 |
실시예 8 | Ti 산화물피막 | 0.3 | 380 | 비결정질 |
실시예 9 | Si 산화물피막 | 0.07 | 90 | 비결정질 |
실시예 10 | Zr 산화물피막 | 0.1 | 140 | 기본적으로 비결정질 (및 부분적으로 결정질) |
실시예 11 | Ti 산화물피막 | 0.1 | 140 | 기본적으로 비결정질 (및 부분적으로 결정질) |
내식 시험전 | 내식 시험후 | 시험후 외관 | |||||
Br(kG) | iHc (kOe) | (BH)max (MGOe) | Br(kG) | iHc (kOe) | (BH)max (MGOe) | ||
실시예 6 | 11.3 | 16.6 | 30.4 | 11.3 | 16.3 | 29.7 | 변화없음 |
실시예 7 | 11.3 | 16.6 | 30.4 | 11.2 | 16.4 | 29.7 | 변화없음 |
실시예 8 | 11.4 | 16.6 | 30.5 | 11.2 | 16.3 | 29.6 | 변화없음 |
실시예 9 | 11.4 | 16.6 | 30.5 | 11.2 | 16.4 | 29.6 | 변화없음 |
실시예 10 | 11.4 | 16.6 | 30.6 | 11.2 | 16.5 | 29.9 | 변화없음 |
실시예 11 | 11.3 | 16.6 | 30.5 | 11.2 | 16.4 | 29.8 | 변화없음 |
금속화합물 | 촉매 | 안정제 | 유기용매 | |
실시예 12 | 테트라메톡시 실란 | 질산 | 무첨가 | 에탄올 |
실시예 13 | 지르코늄 이소프로폭시드 | 질산 | 아세틸 아세톤 | 에탄올 |
실시예 14 | 티타늄 이소프로폭시드 | 질산 | 무첨가 | 에탄올 |
실시예 15 | 테트라에톡시 실란 | 아세트산 | 무첨가 | 에탄올+IPA |
실시예 16 | 지르코늄 부톡시드 | 아세트산 | 에틸 아세토아세테이트 | 에탄올+IPA |
실시예 17 | 티타늄 부톡시드 | 염산 | 아세틸 아세톤 | 에탄올+IPA |
실시예 18 | 디메틸디에톡시 실란 | 염산 | 무첨가 | 에탄올 |
실시예 19 | 지르코늄 옥틸레이트 | 염산 | 무첨가 | IPA |
실시예 20 | 티타늄 이소프로폭시드 | 질산 | 무첨가 | 에탄올 |
금속화합물의 비율(중량%) | 몰비 | 점성 (cP) | pH | |||
촉매/ 금속화합물 | 안정제/ 금속화합물 | 물/ 금속화합물 | ||||
실시예 12 | 10(주.1) | 0.001 | 0 | 1 | 1.8 | 3.2 |
실시예 13 | 3(주.2) | 0.001 | 1 | 5 | 1.8 | 3.4 |
실시예 14 | 3(주.3) | 0.002 | 0 | 1 | 2.1 | 2.1 |
실시예 15 | 5(주.1) | 2 | 0 | 5 | 1.4 | 4.2 |
실시예 16 | 5(주.2) | 2 | 1.5 | 1 | 1.7 | 4.0 |
실시예 17 | 5(주.3) | 0.005 | 1.5 | 3 | 1.8 | 2.6 |
실시예 18 | 1(주.1) | 0.005 | 0 | 20 | 1.5 | 2.3 |
실시예 19 | 2(주.2) | 0.005 | 0 | 0(주.4) | 1.6 | 2.6 |
실시예 20 | 3(주.3) | 0.002 | 0 | 1 | 2.1 | 2.1 |
인상율 (cm/min) | 열처리 | 주 | |
실시예 12 | 5 | 100℃ ×20min | |
실시예 13 | 10 | 200℃ ×20min | |
실시예 14 | 10 | 200℃ ×20min | |
실시예 15 | 10 | 200℃ ×20min | |
실시예 16 | 10 | 350℃ ×20min | |
실시예 17 | 10 | 350℃ ×20min | |
실시예 18 | 5 | 150℃ ×10min | 인상 및 열처리는 5회 반복됨 |
실시예 19 | 5 | 250℃ ×10min | 인상 및 열처리는 5회 반복됨 |
실시예 20 | 5 | 250℃ ×10min | 인상 및 열처리는 5회 반복됨 |
금속산화물 막 | 두께 (㎛) | 막내의 C의 양 (ppm) | 막의 구조 | |
실시예 12 | Si 산화물 피막 | 0.3 | 350 | 비결정질 |
실시예 13 | Zr 산화물 피막 | 0.3 | 380 | 비결정질 |
실시예 14 | Ti 산화물 피막 | 0.3 | 380 | 비결정질 |
실시예 15 | Si 산화물 피막 | 0.08 | 80 | 비결정질 |
실시예 16 | Zr 산화물 피막 | 0.1 | 140 | 기본적으로 비결정질 (및 부분적으로 결정질) |
실시예 17 | Ti 산화물 피막 | 0.1 | 140 | 기본적으로 비결정질 (및 부분적으로 결정질) |
실시예 18 | Si 산화물 피막 | 0.8 | 500 | 비결정질 |
실시예 19 | Zr 산화물 피막 | 1 | 450 | 기본적으로 비결정질 (및 부분적으로 결정질) |
실시예 20 | Ti 산화물 피막 | 1 | 320 | 기본적으로 비결정질 (및 부분적으로 결정질) |
내식 시험전 | 내식 시험후 | 시험후 외관 | |||||
Br(kG) | iHc (kOe) | (BH)max (MGOe) | Br(kG) | iHc (kOe) | (BH)max (MGOe) | ||
실시예 12 | 11.4 | 16.7 | 30.6 | 11.2 | 16.3 | 29.7 | 변화없음 |
실시예 13 | 11.4 | 16.6 | 30.6 | 11.2 | 16.4 | 29.7 | 변화없음 |
실시예 14 | 11.3 | 16.6 | 30.4 | 11.3 | 16.5 | 29.8 | 변화없음 |
실시예 15 | 11.3 | 16.6 | 30.4 | 11.2 | 16.5 | 29.9 | 변화없음 |
실시예 16 | 11.3 | 16.6 | 30.4 | 11.3 | 16.6 | 30.0 | 변화없음 |
실시예 17 | 11.4 | 16.6 | 30.5 | 11.2 | 16.5 | 29.8 | 변화없음 |
실시예 18 | 11.4 | 16.5 | 30.5 | 11.3 | 16.3 | 29.7 | 변화없음 |
실시예 19 | 11.4 | 16.7 | 30.6 | 11.3 | 16.5 | 29.9 | 변화없음 |
실시예 20 | 11.4 | 16.7 | 30.6 | 11.3 | 16.4 | 29.9 | 변화없음 |
Si화합물 | Al화합물 | 촉매 | 안정제 | 유기용매 | |
실시예 21 | 테트라메톡시 실란 | 알루미늄 이소프로폭시드 | 질산 | 무첨가 | 에탄올 |
실시예 22 | 테트라에톡시 실란 | 알루미늄 부톡시드 | 아세트산 | 무첨가 | 에탄올+IPA |
실시예 23 | 테트라메톡시 실란 | 알루미늄 이소프로폭시드 | 질산 | 무첨가 | 에탄올 |
실시예 24 | 테트라에톡시 실란 | 알루미늄 부톡시드 | 아세트산 | 무첨가 | 에탄올+IPA |
실시예 25 | 디메틸디에톡시 실란 | Si-Al복합 알콕시드 (주.1) | 염산 | 무첨가 | 에탄올 |
금속화합물의 비율*(중량%) | 몰비 | 점성 (cP) | pH | |||
Al/Si+Al | 촉매/ 금속화합물 | 물/ 금속화합물 | ||||
실시예 21 | 10 | 0.05 | 0.001 | 1 | 1.8 | 3.1 |
실시예 22 | 5 | 0.1 | 2 | 5 | 1.5 | 4.1 |
실시예 23 | 10 | 0.05 | 0.001 | 1 | 1.8 | 3.1 |
실시예 24 | 5 | 0.1 | 2 | 5 | 1.5 | 4.1 |
실시예 25 | 1 | 0.2 | 0.005 | 10 | 1.7 | 2.6 |
인상율 (cm/min) | 열처리 | 주 | |
실시예 21 | 5 | 100℃ ×20min | |
실시예 22 | 5 | 100℃ ×20min | |
실시예 23 | 5 | 100℃ ×20min | |
실시예 24 | 5 | 200℃ ×20min | |
실시예 25 | 5 | 100℃ ×10min | 인상 및 열처리는 5회 반복됨 |
두께(㎛) | 피막내의 C의 양(ppm) | 피막의 구조 | |
실시예 21 | 0.2 | 320 | 비결정질 |
실시예 22 | 0.07 | 210 | 비결정질 |
실시예 23 | 0.2 | 320 | 비결정질 |
실시예 24 | 0.07 | 190 | 비결정질 |
실시예 25 | 0.9 | 450 | 비결정질 |
내식 시험전 | 내식 시험후 | 시험후 외관 | |||||
Br(kG) | iHc (kOe) | (BH)max (MGOe) | Br(kG) | iHc (kOe) | (BH)max (MGOe) | ||
실시예 21 | 11.3 | 16.5 | 30.4 | 11.3 | 16.4 | 29.8 | 변화없음 |
실시예 22 | 11.4 | 16.6 | 30.5 | 11.3 | 16.5 | 29.9 | 변화없음 |
내식 시험전 | 내식 시험후 | 시험후 외관 | |||||
Br(kG) | iHc (kOe) | (BH)max (MGOe) | Br(kG) | iHc (kOe) | (BH)max (MGOe) | ||
실시예 23 | 11.4 | 16.5 | 30.5 | 11.4 | 16.4 | 29.9 | 변화없음 |
실시예 24 | 11.3 | 16.5 | 30.4 | 11.3 | 16.4 | 29.8 | 변화없음 |
실시예 25 | 11.4 | 16.6 | 30.6 | 11.4 | 16.3 | 29.7 | 변화없음 |
내식 시험전 | 내식 시험후 | 시험후 외관 | |||||
Br(kG) | iHc (kOe) | (BH)max (MGOe) | Br(kG) | iHc (kOe) | (BH)max (MGOe) | ||
실시예 26 | 11.3 | 16.7 | 30.5 | 11.1 | 16.4 | 29.7 | 변화없음 |
실시예 27 | 11.4 | 16.7 | 30.6 | 11.3 | 16.5 | 29.9 | 변화없음 |
실시예 28 | 11.3 | 16.6 | 30.5 | 11.2 | 16.4 | 29.8 | 변화없음 |
실시예 29 | 11.4 | 16.7 | 30.6 | 11.3 | 16.4 | 29.8 | 변화없음 |
Claims (9)
- Fe: 65~80 원자%, B: 2~28 원자%, R: 10~30 원자%를 포함하여 구성되고, 상기 R은 Nd, Pr, Dy, Ho, Tb 및 Sm으로부터 선택되는 1종 이상의 원소를 포함하는 Fe-B-R계 영구자석에 있어서,사이에 삽입된 금속 피막과 함께 그 표면에 0.01μm 내지 1 μm의 두께를 가지는 금속 산화물 피막을 가지고,상기 금속 산화물 피막은 Al 산화물, Si 산화물, Zr 산화물 및 Ti 산화물로 구성한 군으로부터 선택된 하나 이상의 금속 산화물 성분으로 형성된 것을 특징으로 하는 Fe-B-R계 영구자석.
- 제 1 항에 있어서, 상기 금속 피막은 Al, Sn, Zn, Cu, Fe, Ni, Co 및 Ti으로 구성한 군으로부터 선택된 하나 이상의 금속성분으로 형성된 것을 특징으로 하는 Fe-B-R계 영구자석.
- 제 1 항에 있어서, 상기 금속 피막은 두께가 O.O1 μm 내지 50 μm의 범위인 것을 특징으로 하는 Fe-B-R계 영구자석.
- 삭제
- 제 1 항에 있어서, 상기 금속 산화물 피막은 상기 금속 피막의 금속 성분과 동일한 금속 성분을 포함하는 금속 산화물 성분으로 형성된 것을 특징으로 하는 Fe-B-R계 영구자석.
- 제 1 항에 있어서, 상기 금속 산화물 피막의 두께는 0.05 μm 내지 0.5 μm의 범위인 것을 특징으로 하는 Fe-B-R계 영구자석.
- 제 1 항에 있어서, 상기 금속 산화물 피막에 함유된 탄소(C)의 함량은 50 ppm 내지 1,000 ppm의 범위인 것을 특징으로 하는 Fe-B-R계 영구자석.
- 제 1 항에 있어서, 상기 금속 산화물 피막은 필수적으로 비결정질상을 포함하여 구성하는 금속 산화물로 형성된 것을 특징으로 하는 Fe-B-R계 영구자석.
- 제 1 항에 기재된 영구자석을 제조하는 방법에 있어서, 증착 공정에 의해 Fe-B-R계 영구자석의 표면에 금속 피막을 형성하고, 금속 산화물 피막의 출발물질인 금속 화합물의 가수분해 반응 및 중합반응에 의해 생산된 졸용액을 금속 피막의 표면에 적용하고, 적용된 졸용액을 열처리하여 0.01 μm 내지 1 μm 범위의 두께를 가지는 금속 산화물 피막을 형성하는 단계들을 포함하여 구성하는 Fe-B-R계 영구자석의 제조방법.
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JP286628 | 1998-10-08 | ||
JP28662898 | 1998-10-08 | ||
JP30373198 | 1998-10-26 | ||
JP303731 | 1998-10-26 | ||
JP349915 | 1998-12-09 | ||
JP34991598 | 1998-12-09 | ||
US09/382,588 US6444328B1 (en) | 1998-08-31 | 1999-08-25 | FE-B-R based permanent magnet having corrosion-resistant film, and process for producing the same |
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KR100607293B1 true KR100607293B1 (ko) | 2006-07-28 |
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KR1019990036546A Expired - Lifetime KR100607293B1 (ko) | 1998-08-31 | 1999-08-31 | 내식성 피막을 갖는 Fe-B-R 계 영구자석 및 그의 제조방법 |
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US (3) | US6444328B1 (ko) |
EP (1) | EP0984460B1 (ko) |
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CN (1) | CN1162871C (ko) |
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JP3801418B2 (ja) * | 1999-05-14 | 2006-07-26 | 株式会社Neomax | 表面処理方法 |
MY128139A (en) * | 2000-03-31 | 2007-01-31 | Neomax Co Ltd | Blasting apparatus |
KR100788330B1 (ko) * | 2001-12-28 | 2007-12-27 | 신에쓰 가가꾸 고교 가부시끼가이샤 | 희토류 소결 자석 및 희토류 소결 자석의 제조 방법 |
US8758906B2 (en) * | 2004-02-26 | 2014-06-24 | Sumitomo Electric Industries, Ltd. | Soft magnetic material, powder magnetic core and process for producing the same |
MY142406A (en) * | 2004-03-29 | 2010-11-30 | Shinetsu Chemical Co | Layered product |
EP1734539B1 (en) * | 2004-06-30 | 2011-04-27 | Shin-Etsu Chemical Co., Ltd. | Corrosion-resistant rare earth magnets and process for production thereof |
JP4591631B2 (ja) * | 2008-07-30 | 2010-12-01 | 日立金属株式会社 | 耐食性磁石およびその製造方法 |
CN101710518A (zh) * | 2009-12-21 | 2010-05-19 | 上海爱普生磁性器件有限公司 | 粘结钕铁硼永磁体及其制造方法 |
US9272332B2 (en) * | 2011-09-29 | 2016-03-01 | GM Global Technology Operations LLC | Near net shape manufacturing of rare earth permanent magnets |
EP2696219B1 (de) | 2012-08-06 | 2017-01-04 | Ampass-Explorer Corp. | Vorsatzeinrichtung zur Verbesserung der Empfangsqualität einer Material-Detektoreinrichtung |
CN103824693B (zh) * | 2014-03-22 | 2016-08-17 | 沈阳中北通磁科技股份有限公司 | 一种带有复合镀膜的钕铁硼稀土永磁器件的制造方法 |
CN104480475A (zh) | 2014-11-04 | 2015-04-01 | 烟台首钢磁性材料股份有限公司 | 钕铁硼磁体表面硬质铝膜层的制备方法 |
KR102283172B1 (ko) * | 2015-02-03 | 2021-07-29 | 엘지이노텍 주식회사 | 희토류 자석 및 이를 포함하는 전동기 |
CN104651783B (zh) | 2015-02-12 | 2017-09-01 | 烟台首钢磁性材料股份有限公司 | 一种永磁钕铁硼磁钢表面镀铝的方法 |
EP3822996A1 (en) * | 2019-11-12 | 2021-05-19 | Abiomed Europe GmbH | Corrosion-resistant permanent magnet for an intravascular blood pump |
CN112779576B (zh) * | 2020-12-25 | 2022-06-21 | 南通正海磁材有限公司 | 一种钕铁硼磁体复合镀层及其制备方法 |
CN113517129B (zh) * | 2021-08-16 | 2023-05-05 | 江西省科学院应用物理研究所 | 一种在钕铁硼表面制备耐蚀涂层的方法 |
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EP0984460A3 (en) | 2000-07-12 |
EP0984460A2 (en) | 2000-03-08 |
EP0984460B1 (en) | 2004-03-17 |
KR100607297B1 (ko) | 2006-07-28 |
US6251196B1 (en) | 2001-06-26 |
US6399147B2 (en) | 2002-06-04 |
CN1162871C (zh) | 2004-08-18 |
KR20000017659A (ko) | 2000-03-25 |
US20010030590A1 (en) | 2001-10-18 |
US6444328B1 (en) | 2002-09-03 |
CN1249521A (zh) | 2000-04-05 |
KR20000017644A (ko) | 2000-03-25 |
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