MD814C2 - Process for aluminum microarc anodizing - Google Patents
Process for aluminum microarc anodizingInfo
- Publication number
- MD814C2 MD814C2 MD96-0351A MD960351A MD814C2 MD 814 C2 MD814 C2 MD 814C2 MD 960351 A MD960351 A MD 960351A MD 814 C2 MD814 C2 MD 814C2
- Authority
- MD
- Moldova
- Prior art keywords
- current density
- aluminum
- microarc
- porosity
- decrease
- Prior art date
Links
Landscapes
- Insulated Metal Substrates For Printed Circuits (AREA)
Abstract
The invention relates to the aluminium anodization and may be applied in microelectronics for hybrid integrated circuit [ IC ] substrates manufacture.The purpose of the invention is the decrease of the coating roughness and porosity. The process is done in the microarc operation at the current density up to 15 A/dm2 and the labour voltage of 400-700 V. The decrease of the coating roughness and porosity is attained by anodization in the aqueous solution comprising 1,4-1,6 mass. % of hexametaphosphate, with the application of the pulsate voltage, which is raised up to the effective values within 5-8 min, then is reduced with 10-15% after decreasing the current density with 4-5 A/dm2 and is removed completely after reducing the current density up to 0,2-0,4 A/ dm2.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MD96-0351A MD814C2 (en) | 1986-03-18 | 1996-10-25 | Process for aluminum microarc anodizing |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU4057022 | 1986-03-18 | ||
MD96-0351A MD814C2 (en) | 1986-03-18 | 1996-10-25 | Process for aluminum microarc anodizing |
Publications (2)
Publication Number | Publication Date |
---|---|
MD814B1 MD814B1 (en) | 1997-08-31 |
MD814C2 true MD814C2 (en) | 1997-10-31 |
Family
ID=26640670
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MD96-0351A MD814C2 (en) | 1986-03-18 | 1996-10-25 | Process for aluminum microarc anodizing |
Country Status (1)
Country | Link |
---|---|
MD (1) | MD814C2 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3293158A (en) * | 1963-09-17 | 1966-12-20 | Mcneill William | Anodic spark reaction processes and articles |
SU926083A1 (en) * | 1980-01-04 | 1982-05-07 | Институт Неорганической Химии Со Ан Ссср | Method for electrolytically applying silicate coatings |
-
1996
- 1996-10-25 MD MD96-0351A patent/MD814C2/en active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3293158A (en) * | 1963-09-17 | 1966-12-20 | Mcneill William | Anodic spark reaction processes and articles |
SU926083A1 (en) * | 1980-01-04 | 1982-05-07 | Институт Неорганической Химии Со Ан Ссср | Method for electrolytically applying silicate coatings |
Also Published As
Publication number | Publication date |
---|---|
MD814B1 (en) | 1997-08-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG4A | Patent for invention issued | ||
IF99 | Valid patent on 19990615 |
Free format text: EXPIRES: 20060318 |