MD416Z - Method for electrochemical activation of the surface of the tungsten-containing hard alloys for soldering (variants) - Google Patents
Method for electrochemical activation of the surface of the tungsten-containing hard alloys for soldering (variants) Download PDFInfo
- Publication number
- MD416Z MD416Z MDS20110017A MDS20110017A MD416Z MD 416 Z MD416 Z MD 416Z MD S20110017 A MDS20110017 A MD S20110017A MD S20110017 A MDS20110017 A MD S20110017A MD 416 Z MD416 Z MD 416Z
- Authority
- MD
- Moldova
- Prior art keywords
- anode
- duration
- electrochemical activation
- soldering
- tungsten
- Prior art date
Links
- 230000004913 activation Effects 0.000 title abstract 5
- 238000000034 method Methods 0.000 title abstract 4
- 229910045601 alloy Inorganic materials 0.000 title abstract 3
- 239000000956 alloy Substances 0.000 title abstract 3
- 238000005476 soldering Methods 0.000 title abstract 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 title abstract 2
- 229910052721 tungsten Inorganic materials 0.000 title abstract 2
- 239000010937 tungsten Substances 0.000 title abstract 2
- 229910052783 alkali metal Inorganic materials 0.000 abstract 2
- 150000001340 alkali metals Chemical class 0.000 abstract 2
- 239000007864 aqueous solution Substances 0.000 abstract 2
- 230000007935 neutral effect Effects 0.000 abstract 2
- 150000003839 salts Chemical class 0.000 abstract 2
Landscapes
- Electroplating Methods And Accessories (AREA)
Abstract
The invention relates to the activation of alloys, namely, to a method for electrochemical activation of the surface of the tungsten-containing hard alloys for soldering.The method, according to the first variant, includes the electrochemical activation of the surface in neutral aqueous solutions of inorganic salts of alkali metals with anode current pulses with the amplitude of 90…250 V, at the anode pulse duration of 2·10-5…2·10-3 s, anode current density of 1…5 A/cm2 and the duration of pause between pulses of 11…15 times smaller than the pulse duration, and treatment lasts 5…100 s.The method, according to the second variant, includes the electrochemical activation of the surface in neutral aqueous solutions of inorganic salts of alkali metals with bipolar current pulses, anode and cathode current pulses with the duration of (0.5…4.0)·10-3 s, at the anode current density of 5…10 A/cm2 and the cathode current density of 10… 20 times smaller than the anode one, the pause duration after the cathode pulse is 1…4 durations of the cathode pulse, and treatment lasts 100…300 s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MDS20110017A MD416Z (en) | 2011-01-18 | 2011-01-18 | Method for electrochemical activation of the surface of the tungsten-containing hard alloys for soldering (variants) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MDS20110017A MD416Z (en) | 2011-01-18 | 2011-01-18 | Method for electrochemical activation of the surface of the tungsten-containing hard alloys for soldering (variants) |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| MD416Y MD416Y (en) | 2011-09-30 |
| MD416Z true MD416Z (en) | 2012-04-30 |
Family
ID=45815280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MDS20110017A MD416Z (en) | 2011-01-18 | 2011-01-18 | Method for electrochemical activation of the surface of the tungsten-containing hard alloys for soldering (variants) |
Country Status (1)
| Country | Link |
|---|---|
| MD (1) | MD416Z (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1007888A1 (en) * | 1981-07-02 | 1983-03-30 | Институт Прикладной Физики Ан Мсср | Method of electrochemical machining |
| SU1440636A1 (en) * | 1987-01-05 | 1988-11-30 | Институт Прикладной Физики Ан Мсср | Method of electrochemical machining of metals with bipolar current |
| EA000069B1 (en) * | 1995-07-18 | 1998-06-25 | Филипс Электроникс Н.В. | Method of electrochemical machining by bipolar pulses |
| MD1053G2 (en) * | 1997-04-10 | 1999-05-31 | Uzina Experimentala A Institutului De Fizica Aplicata Al Academiei De Stiinte A Republicii Moldova | Process for electrospark alloying |
| EA001749B1 (en) * | 1998-04-06 | 2001-08-27 | Конинклейке Филипс Электроникс Н.В. | Method of and arrangement for electrochemical machining |
| MD3288C2 (en) * | 2005-06-03 | 2007-11-30 | Институт Прикладной Физики Академии Наук Молдовы | Electrolyte for dimensional electrochemical working of hard tungsten-cobalt alloys |
| MD3316C2 (en) * | 2005-12-06 | 2007-12-31 | Институт Прикладной Физики Академии Наук Молдовы | Electrolyte for electrochemical pickling of tungsten |
| MD3457G2 (en) * | 2007-03-19 | 2008-07-31 | Институт Прикладной Физики Академии Наук Молдовы | Process for electrochemical activation of tungsten-free hard alloy surface for low-temperature brazing |
| MD3481G2 (en) * | 2006-06-19 | 2008-10-31 | Институт Прикладной Физики Академии Наук Молдовы | Process for metal electrochemical working |
| MD3606G2 (en) * | 2007-02-27 | 2008-12-31 | Институт Прикладной Физики Академии Наук Молдовы | Process for activating the tungsten-containing hard alloys surfaces for low-temperature brazing (variants) |
| MD68Z (en) * | 2009-06-05 | 2010-03-31 | Институт Прикладной Физики Академии Наук Молдовы | Process for electrochemical dimensional working of metal parts (variants) and device for realization thereof |
| MD231Z (en) * | 2009-06-04 | 2011-01-31 | Институт Прикладной Физики Академии Наук Молдовы | Method for identifying the structure of the binding phase of pseudoalloys based on tungsten |
-
2011
- 2011-01-18 MD MDS20110017A patent/MD416Z/en not_active IP Right Cessation
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1007888A1 (en) * | 1981-07-02 | 1983-03-30 | Институт Прикладной Физики Ан Мсср | Method of electrochemical machining |
| SU1440636A1 (en) * | 1987-01-05 | 1988-11-30 | Институт Прикладной Физики Ан Мсср | Method of electrochemical machining of metals with bipolar current |
| EA000069B1 (en) * | 1995-07-18 | 1998-06-25 | Филипс Электроникс Н.В. | Method of electrochemical machining by bipolar pulses |
| MD1053G2 (en) * | 1997-04-10 | 1999-05-31 | Uzina Experimentala A Institutului De Fizica Aplicata Al Academiei De Stiinte A Republicii Moldova | Process for electrospark alloying |
| EA001749B1 (en) * | 1998-04-06 | 2001-08-27 | Конинклейке Филипс Электроникс Н.В. | Method of and arrangement for electrochemical machining |
| MD3288C2 (en) * | 2005-06-03 | 2007-11-30 | Институт Прикладной Физики Академии Наук Молдовы | Electrolyte for dimensional electrochemical working of hard tungsten-cobalt alloys |
| MD3316C2 (en) * | 2005-12-06 | 2007-12-31 | Институт Прикладной Физики Академии Наук Молдовы | Electrolyte for electrochemical pickling of tungsten |
| MD3481G2 (en) * | 2006-06-19 | 2008-10-31 | Институт Прикладной Физики Академии Наук Молдовы | Process for metal electrochemical working |
| MD3606G2 (en) * | 2007-02-27 | 2008-12-31 | Институт Прикладной Физики Академии Наук Молдовы | Process for activating the tungsten-containing hard alloys surfaces for low-temperature brazing (variants) |
| MD3457G2 (en) * | 2007-03-19 | 2008-07-31 | Институт Прикладной Физики Академии Наук Молдовы | Process for electrochemical activation of tungsten-free hard alloy surface for low-temperature brazing |
| MD231Z (en) * | 2009-06-04 | 2011-01-31 | Институт Прикладной Физики Академии Наук Молдовы | Method for identifying the structure of the binding phase of pseudoalloys based on tungsten |
| MD68Z (en) * | 2009-06-05 | 2010-03-31 | Институт Прикладной Физики Академии Наук Молдовы | Process for electrochemical dimensional working of metal parts (variants) and device for realization thereof |
Non-Patent Citations (1)
| Title |
|---|
| Петрунин И. Е. Справочник по пайке. Машиностроение, Москва, 1984, с. 245-248 * |
Also Published As
| Publication number | Publication date |
|---|---|
| MD416Y (en) | 2011-09-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| KA4Y | Short-term patent lapsed due to non-payment of fees (with right of restoration) |