JP2001210539A5 - - Google Patents
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- JP2001210539A5 JP2001210539A5 JP2000015368A JP2000015368A JP2001210539A5 JP 2001210539 A5 JP2001210539 A5 JP 2001210539A5 JP 2000015368 A JP2000015368 A JP 2000015368A JP 2000015368 A JP2000015368 A JP 2000015368A JP 2001210539 A5 JP2001210539 A5 JP 2001210539A5
- Authority
- JP
- Japan
- Prior art keywords
- based permanent
- permanent magnet
- rtb
- plating
- straight line
- 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.)
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Description
【特許請求の範囲】
【請求項１】 Ｒ２Ｔ１４Ｂ型金属間化合物（ＲはＹを含む希土類元素の１種または２種以上であり、ＴはＦｅまたはＦｅとＣｏである）を主相とするＲ−Ｔ−Ｂ系永久磁石体を硝酸塩1〜100ｇ/リットルおよび硝酸0.05〜10vol.%からなる混合酸性液によりめっき前処理後、めっきを行うことを特徴とするＲ−Ｔ−Ｂ系永久磁石の表面処理方法。
【請求項２】 Ｒ２Ｔ１４Ｂ型金属間化合物（ＲはＹを含む希土類元素の１種または２種以上であり、ＴはＦｅまたはＦｅとＣｏである）を主相とするＲ−Ｔ−Ｂ系永久磁石体表面にめっきを被覆してなるＲ−Ｔ−Ｂ系永久磁石であって、前記Ｒ−Ｔ−Ｂ系永久磁石の断面組織におけるめっき層とＲ−Ｔ−Ｂ系永久磁石体とが形成する境界に沿って100μｍの直線を引いたとき、その直線に沿う主相部に形成されたエッチングピットの個数がその直線に沿う粒界相部に形成されたエッチングピットの個数よりも多いことを特徴とするＲ−Ｔ−Ｂ系永久磁石。
[Claims]
An R-T having a main phase of R 2 T 14 B type intermetallic compound (R is one or more kinds of rare earth elements including Y, and T is Fe or Fe and Co). -Surface treatment of an RTB-based permanent magnet characterized in that plating is performed after pre-plating the B-based permanent magnet with a mixed acid solution consisting of 1 to 100 g / liter of nitrate and 0.05 to 10 vol. Method.
2. An R-T having a main phase of R 2 T 14 B type intermetallic compound (R is one or more of rare earth elements including Y, and T is Fe or Fe and Co). -An RTB-based permanent magnet comprising a B- based permanent magnet body surface coated with plating, wherein a plating layer and an RTB-based permanent magnet in a cross-sectional structure of the RTB-based permanent magnet. When a 100 μm straight line is drawn along the boundary formed by the body, the number of etching pits formed in the main phase along the straight line is larger than the number of etching pits formed in the grain boundary phase along the straight line. R-T-B-based permanent magnets characterized by a large number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000015368A JP4591729B2 (en) | 2000-01-25 | 2000-01-25 | Surface treatment method for RTB permanent magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000015368A JP4591729B2 (en) | 2000-01-25 | 2000-01-25 | Surface treatment method for RTB permanent magnet |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2001210539A JP2001210539A (en) | 2001-08-03 |
| JP2001210539A5 true JP2001210539A5 (en) | 2006-12-28 |
| JP4591729B2 JP4591729B2 (en) | 2010-12-01 |
Family
ID=18542682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000015368A Expired - Lifetime JP4591729B2 (en) | 2000-01-25 | 2000-01-25 | Surface treatment method for RTB permanent magnet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4591729B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100712081B1 (en) * | 2003-06-27 | 2007-05-02 | 티디케이가부시기가이샤 | R-t-b based permanent magnet |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2840998B2 (en) * | 1992-08-05 | 1998-12-24 | 住友特殊金属株式会社 | Surface treatment method for R-Fe-B permanent magnet |
| JPH06260317A (en) * | 1993-03-05 | 1994-09-16 | M Eng:Yugen | Method of treating surface of sintered metal |
| JP3213157B2 (en) * | 1994-02-17 | 2001-10-02 | 住友特殊金属株式会社 | Surface treatment method for Fe-BR-based magnet material |
-
2000
- 2000-01-25 JP JP2000015368A patent/JP4591729B2/en not_active Expired - Lifetime
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