MD416Y - 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
MD416Y
MD416Y MDS20110017A MDS20110017A MD416Y MD 416 Y MD416 Y MD 416Y MD S20110017 A MDS20110017 A MD S20110017A MD S20110017 A MDS20110017 A MD S20110017A MD 416 Y MD416 Y MD 416Y
Authority
MD
Moldova
Prior art keywords
anode
duration
electrochemical activation
soldering
tungsten
Prior art date
Application number
MDS20110017A
Other languages
Moldavian (mo)
Romanian (ro)
Inventor
Vladimir Parsutin
Anatol Paramonov
Alexandr Kovali
Vasile Agafii
Vladimir Parşutin
Alexandr COVALI
Original Assignee
Inst Fizica Aplicata Stiinte
Inst De Fizic & Abreve Aplicat & Abreve Al Academiei De & Scedil Tiin & Tcedil E A Moldovei
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 Inst Fizica Aplicata Stiinte, Inst De Fizic & Abreve Aplicat & Abreve Al Academiei De & Scedil Tiin & Tcedil E A Moldovei filed Critical Inst Fizica Aplicata Stiinte
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 true MD416Y (en) 2011-09-30
MD416Z 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)

Family Cites Families (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
KR100407873B1 (en) * 1995-07-18 2004-03-26 코닌클리케 필립스 일렉트로닉스 엔.브이. Electrochemical Machining Method with 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
ES2191419T3 (en) * 1998-04-06 2003-09-01 Koninkl Philips Electronics Nv METHOD OF AND PROVISION 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
  • 2011

Also Published As

Publication number Publication date
MD416Z (en) 2012-04-30

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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)