JPS5547399A - Electropolishing method for sendust material - Google Patents
Electropolishing method for sendust materialInfo
- Publication number
- JPS5547399A JPS5547399A JP11957678A JP11957678A JPS5547399A JP S5547399 A JPS5547399 A JP S5547399A JP 11957678 A JP11957678 A JP 11957678A JP 11957678 A JP11957678 A JP 11957678A JP S5547399 A JPS5547399 A JP S5547399A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- soln
- electrolytic
- temp
- glycolic acid
- 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
- Magnetic Heads (AREA)
Abstract
PURPOSE: To remove the layer changed in property by processing so as to give a specular surface having a crystal structure to that of the matrix in the electrolytic polishing of sendust material, by applying a voltage at a specific temp., using a mixed soln. comprising glycolic acid and sulfuric acid as an electrolytic soln.
CONSTITUTION: A sendust material is electrolytically polished by applying voltage to the sendust material using a mixed soln. comprising 40W60% by vol. glycolic acid and sulfuric acid as the electrolytic soln. at a temp. not higher than 25°C, pref., not higher than 10°C. For example, the current is nearly constant in the range of 40W60% glycolic acid concn., thus forming an electrolytic polishing region 3. At an electrolysis temp. 5°C, set voltge 25V, a voltage-current curve 7 and a voltage- surface roughness curve 8 are given. The roughness of the surface, which faces to the gap, of a sample electrolyzed in the range 3 is Rmax 200W300Å which is usable as the surface roughness. This method can be applied to the polishing of the magnetic head surface facing to the gap, thereby producing a magnetic head having improved high frequency characteristics.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11957678A JPS5547399A (en) | 1978-09-27 | 1978-09-27 | Electropolishing method for sendust material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11957678A JPS5547399A (en) | 1978-09-27 | 1978-09-27 | Electropolishing method for sendust material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5547399A true JPS5547399A (en) | 1980-04-03 |
Family
ID=14764759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11957678A Pending JPS5547399A (en) | 1978-09-27 | 1978-09-27 | Electropolishing method for sendust material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5547399A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040071381A (en) * | 2003-02-06 | 2004-08-12 | 임병식 | Electrolyte composition using electrolysis polishing with metal surface |
| JP2020204071A (en) * | 2019-06-17 | 2020-12-24 | マルイ鍍金工業株式会社 | Electrolytic polishing method and electrolytic polishing liquid |
-
1978
- 1978-09-27 JP JP11957678A patent/JPS5547399A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040071381A (en) * | 2003-02-06 | 2004-08-12 | 임병식 | Electrolyte composition using electrolysis polishing with metal surface |
| JP2020204071A (en) * | 2019-06-17 | 2020-12-24 | マルイ鍍金工業株式会社 | Electrolytic polishing method and electrolytic polishing liquid |
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