JPS54103746A - Method of electropolishing sendust - Google Patents
Method of electropolishing sendustInfo
- Publication number
- JPS54103746A JPS54103746A JP1125378A JP1125378A JPS54103746A JP S54103746 A JPS54103746 A JP S54103746A JP 1125378 A JP1125378 A JP 1125378A JP 1125378 A JP1125378 A JP 1125378A JP S54103746 A JPS54103746 A JP S54103746A
- Authority
- JP
- Japan
- Prior art keywords
- sendust
- electropolishing
- piece
- glycerin
- magnetic
- 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.)
- Pending
Links
Landscapes
- Soft Magnetic Materials (AREA)
Abstract
PURPOSE: To eliminate deterioration in magnetic property due to mechanical deterioration caused during mechanical working by electropolishing a Sendust piece for the material of magnetic head core in an electrolyte made of sulfuric acid, phosphoric acid and glycerin.
CONSTITUTION: A Sendust piece whose surface is mechanically polished is dipped in an electrolyte composed of sulfuric acid, phosphoric acid and glycerin at a ratio of 1:1:1 for electropolishing. Even if the surface of a Sendust piece, for example, is electropolished by 1 μm with application of voltages ranging from V1 to V2 shown by a flat section in the curve A, the polished surface is resistant to roughness, maintaining smoothness. In this manner, the removal of layer affected by mechanical working and the forming can be performed without loss of magnetic characteristic inherent in Sendust, providing a magnetic head of high density and high performance at a higher accuracy and a higher yield.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1125378A JPS54103746A (en) | 1978-02-02 | 1978-02-02 | Method of electropolishing sendust |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1125378A JPS54103746A (en) | 1978-02-02 | 1978-02-02 | Method of electropolishing sendust |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54103746A true JPS54103746A (en) | 1979-08-15 |
Family
ID=11772764
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1125378A Pending JPS54103746A (en) | 1978-02-02 | 1978-02-02 | Method of electropolishing sendust |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54103746A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100422392C (en) * | 2004-10-13 | 2008-10-01 | 北京有色金属研究总院 | Electrochemical polish process for nickel-base strip for preparing coating superconductor |
-
1978
- 1978-02-02 JP JP1125378A patent/JPS54103746A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100422392C (en) * | 2004-10-13 | 2008-10-01 | 北京有色金属研究总院 | Electrochemical polish process for nickel-base strip for preparing coating superconductor |
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