JPS5030443B1 - - Google Patents
Info
- Publication number
- JPS5030443B1 JPS5030443B1 JP46054145A JP5414571A JPS5030443B1 JP S5030443 B1 JPS5030443 B1 JP S5030443B1 JP 46054145 A JP46054145 A JP 46054145A JP 5414571 A JP5414571 A JP 5414571A JP S5030443 B1 JPS5030443 B1 JP S5030443B1
- Authority
- JP
- Japan
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/46—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing oxalates
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/48—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
- C23C22/58—Treatment of other metallic material
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/72—Protective coatings, e.g. anti-static or antifriction
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US5767170A | 1970-07-23 | 1970-07-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5030443B1 true JPS5030443B1 (ja) | 1975-10-01 |
Family
ID=22012034
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP46054145A Pending JPS5030443B1 (ja) | 1970-07-23 | 1971-07-20 |
Country Status (10)
Country | Link |
---|---|
US (1) | US3674554A (ja) |
JP (1) | JPS5030443B1 (ja) |
AU (1) | AU3114771A (ja) |
BE (1) | BE770367A (ja) |
CA (1) | CA943440A (ja) |
DE (1) | DE2135899C3 (ja) |
FR (1) | FR2099536B1 (ja) |
GB (1) | GB1298536A (ja) |
IT (1) | IT938587B (ja) |
ZA (1) | ZA714618B (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1982004158A1 (en) * | 1981-05-22 | 1982-11-25 | Kawana Takahiro | Magnetic recording medium |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5050901A (ja) * | 1973-09-04 | 1975-05-07 | ||
US4029541A (en) * | 1974-07-05 | 1977-06-14 | Ampex Corporation | Magnetic recording disc of improved durability having tin-nickel undercoating |
DE2608022C2 (de) | 1976-02-27 | 1984-03-29 | Basf Ag, 6700 Ludwigshafen | Verfahren zur Herstellung magnetischer Aufzeichnungsträger mit verschleißfester Oberfläche |
FR2473209A1 (fr) * | 1980-01-08 | 1981-07-10 | Sagem | Procede pour former une couche de protection sur une couche magnetique et couche magnetique protegee obtenue par ce procede |
GB8718010D0 (en) * | 1986-08-21 | 1987-09-03 | Ici Plc | Surface treatment for recording media |
GB2309980B (en) * | 1996-02-06 | 1998-12-16 | Abbey | Treatment of ferrous metal surfaces |
CN112919896B (zh) * | 2020-12-28 | 2022-01-18 | 横店集团东磁股份有限公司 | 一种高致密度永磁铁氧体材料的制备方法 |
-
1970
- 1970-07-23 US US57671A patent/US3674554A/en not_active Expired - Lifetime
-
1971
- 1971-07-06 GB GB31550/71A patent/GB1298536A/en not_active Expired
- 1971-07-13 AU AU31147/71A patent/AU3114771A/en not_active Expired
- 1971-07-13 ZA ZA714618A patent/ZA714618B/xx unknown
- 1971-07-17 DE DE2135899A patent/DE2135899C3/de not_active Expired
- 1971-07-19 FR FR7126272A patent/FR2099536B1/fr not_active Expired
- 1971-07-20 JP JP46054145A patent/JPS5030443B1/ja active Pending
- 1971-07-20 IT IT7499/71A patent/IT938587B/it active
- 1971-07-22 CA CA118,900A patent/CA943440A/en not_active Expired
- 1971-07-23 BE BE770367A patent/BE770367A/xx unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1982004158A1 (en) * | 1981-05-22 | 1982-11-25 | Kawana Takahiro | Magnetic recording medium |
Also Published As
Publication number | Publication date |
---|---|
FR2099536B1 (ja) | 1976-04-02 |
DE2135899B2 (de) | 1975-02-06 |
BE770367A (fr) | 1971-12-01 |
AU3114771A (en) | 1973-01-18 |
FR2099536A1 (ja) | 1972-03-17 |
DE2135899C3 (de) | 1975-09-25 |
DE2135899A1 (de) | 1972-02-17 |
CA943440A (en) | 1974-03-12 |
ZA714618B (en) | 1972-07-26 |
US3674554A (en) | 1972-07-04 |
IT938587B (it) | 1973-01-25 |
GB1298536A (en) | 1972-12-06 |