JPS649833A - Sealing composition for magnetic head and production thereof - Google Patents
Sealing composition for magnetic head and production thereofInfo
- Publication number
- JPS649833A JPS649833A JP16451187A JP16451187A JPS649833A JP S649833 A JPS649833 A JP S649833A JP 16451187 A JP16451187 A JP 16451187A JP 16451187 A JP16451187 A JP 16451187A JP S649833 A JPS649833 A JP S649833A
- Authority
- JP
- Japan
- Prior art keywords
- sio2
- magnetic head
- sealing composition
- resistance
- fluidity
- 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.)
- Granted
Links
Landscapes
- Glass Compositions (AREA)
Abstract
PURPOSE:To provide a sealing composition for magnetic head, containing specific amounts of SiO2, B2O3, PbO, ZnO, Al2O3 and CdO, having a specific SiO2/(SiO2+B2O3) ratio and having excellent fluidity, water-resistance and transparency. CONSTITUTION:The magnetic head-sealing composition of the present invention contains 3-6wt.% of SiO2, 7-11wt.% of B2O3, 74-77wt.% of Pb, 3-5wt.% of ZnO, <1wt.% of Al2O3 and 5-9wt.% of CdO and has an SiO2/(SiO2+B2O3) ratio of >=0.3. The sealing composition can be produced by mixing and melting at least two kinds of different glass composition shown in the Table 2. The sealing composite of the present invention has excellent water-resistance, fluidity and transparency, exhibits fluidity at a low working temperature and practical water-resistance when applied to a magnetic head, etc., and has excellent conformity of thermal expansion coefficient with a head material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16451187A JPH0764585B2 (en) | 1987-07-01 | 1987-07-01 | Sealing composition for magnetic head and method for producing the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16451187A JPH0764585B2 (en) | 1987-07-01 | 1987-07-01 | Sealing composition for magnetic head and method for producing the same |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS649833A true JPS649833A (en) | 1989-01-13 |
JPH0764585B2 JPH0764585B2 (en) | 1995-07-12 |
Family
ID=15794550
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16451187A Expired - Fee Related JPH0764585B2 (en) | 1987-07-01 | 1987-07-01 | Sealing composition for magnetic head and method for producing the same |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0764585B2 (en) |
-
1987
- 1987-07-01 JP JP16451187A patent/JPH0764585B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH0764585B2 (en) | 1995-07-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |