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)

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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
Application number
MDS20110017A
Other languages
Romanian (ro)
Russian (ru)
Inventor
Владимир ПАРШУТИН
Анатолий ПАРАМОНОВ
Александр КОВАЛЬ
Василе АГАФИЙ
Original Assignee
Институт Прикладной Физики Академии Наук Молдовы
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Институт Прикладной Физики Академии Наук Молдовы filed Critical Институт Прикладной Физики Академии Наук Молдовы
Priority to MDS20110017A priority Critical patent/MD416Z/en
Publication of MD416Y publication Critical patent/MD416Y/en
Publication of MD416Z publication Critical patent/MD416Z/en

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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.
MDS20110017A 2011-01-18 2011-01-18 Method for electrochemical activation of the surface of the tungsten-containing hard alloys for soldering (variants) MD416Z (en)

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)

* Cited by examiner, † Cited by third party
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

Patent Citations (12)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

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KA4Y Short-term patent lapsed due to non-payment of fees (with right of restoration)