MD3082G2 - Process for metal electrochemical protection from corrosion - Google Patents
Process for metal electrochemical protection from corrosionInfo
- Publication number
- MD3082G2 MD3082G2 MDA20050224A MD20050224A MD3082G2 MD 3082 G2 MD3082 G2 MD 3082G2 MD A20050224 A MDA20050224 A MD A20050224A MD 20050224 A MD20050224 A MD 20050224A MD 3082 G2 MD3082 G2 MD 3082G2
- Authority
- MD
- Moldova
- Prior art keywords
- potential
- metal
- corrosion
- current pulse
- reverse
- Prior art date
Links
Landscapes
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention relates to a process for metal electrochemical protection from corrosion and may be used for pipe and boiler protection.Summary of the invention consists in that the process provides for the anodic activation of the metal surface in acid medium at the potential corresponding to the active zone of the metal with direct current pulse, then the density of the direct current pulse Da is decreased up to the values corresponding to the potential of the passive zone, it is included the reverse current pulse, adjustable for width and it is established the ratio of densities of the direct and reverse current pulses Da/Dk equal to (3,5…6,0)·103 A/m3, with subsequent treatment of the formed oxide film in alcoholic solution containing passivated agent at the action of the periodic current with reverse pulse, adjustable for width at the potential of the passive zone.As passivated agent is used tannin and/or salts of the electronegative non-corrosive metals, in the quantity of 0,8…1,8 g/l and 1,5…4,0 g/l, correspondingly.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MDA20050224A MD3082G2 (en) | 2005-08-08 | 2005-08-08 | Process for metal electrochemical protection from corrosion |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MDA20050224A MD3082G2 (en) | 2005-08-08 | 2005-08-08 | Process for metal electrochemical protection from corrosion |
Publications (2)
Publication Number | Publication Date |
---|---|
MD3082F1 MD3082F1 (en) | 2006-06-30 |
MD3082G2 true MD3082G2 (en) | 2007-01-31 |
Family
ID=36643908
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MDA20050224A MD3082G2 (en) | 2005-08-08 | 2005-08-08 | Process for metal electrochemical protection from corrosion |
Country Status (1)
Country | Link |
---|---|
MD (1) | MD3082G2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
MD192Z (en) * | 2009-06-04 | 2010-11-30 | Институт Прикладной Физики Академии Наук Молдовы | Process for thermochemical treatment of steel articles |
MD504Z (en) * | 2011-10-19 | 2012-11-30 | Институт Прикладной Физики Академии Наук Молдовы | Process for manufacture of slightly soluble anode for cathodic protection |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2596571C2 (en) * | 2014-09-30 | 2016-09-10 | Общество с ограниченной ответственностью "Научно-исследовательский институт природных газов и газовых технологий - Газпром ВНИИГАЗ" | Method for cathode protection |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4837900B1 (en) * | 1969-11-14 | 1973-11-14 | ||
SU527928A1 (en) * | 1974-07-15 | 1979-11-05 | Предприятие П/Я А-7629 | Method of metals protection from corrosion |
-
2005
- 2005-08-08 MD MDA20050224A patent/MD3082G2/en not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4837900B1 (en) * | 1969-11-14 | 1973-11-14 | ||
SU527928A1 (en) * | 1974-07-15 | 1979-11-05 | Предприятие П/Я А-7629 | Method of metals protection from corrosion |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
MD192Z (en) * | 2009-06-04 | 2010-11-30 | Институт Прикладной Физики Академии Наук Молдовы | Process for thermochemical treatment of steel articles |
MD504Z (en) * | 2011-10-19 | 2012-11-30 | Институт Прикладной Физики Академии Наук Молдовы | Process for manufacture of slightly soluble anode for cathodic protection |
Also Published As
Publication number | Publication date |
---|---|
MD3082F1 (en) | 2006-06-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
KA4A | Patent for invention lapsed due to non-payment of fees (with right of restoration) | ||
MM4A | Patent for invention definitely lapsed due to non-payment of fees |