VERFAHREN UND VORRICHTUNG ZUM SCHUTZ VON METALLEN VOR EINEM CHEMISCHEN METALLISIEREN UND INSBESONDERE VOR EINEM VERNICKELN
In order to prevent unintentional metallisation of metal articles in contact with electrolytes for chemical metallisation from taking place, an electrode (2) is immersed in the solution which is contacting the metal part (1) and a pulsed unipolar voltage is applied between the metal part and the ele...
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| creator | TODOROV,. NITSCHEV,PETER ALEXANDROV,. SAVOV,SVETOSLAV SAVOV,. MITSCHEV,MINTSCHO GEORGIEV |
| description | In order to prevent unintentional metallisation of metal articles in contact with electrolytes for chemical metallisation from taking place, an electrode (2) is immersed in the solution which is contacting the metal part (1) and a pulsed unipolar voltage is applied between the metal part and the electrode. This voltage possesses an amplitude exceeding a value in the phase of the polarisation curve for the metal part corresponding to initiation of passivation of the metal part. Application of the pulsed voltage is stopped when the potential difference between the electrode and the metal part which is measured in the zero intervals between pulses exceeds a given value within the range at which passivation of the metal part takes place and is only reapplied when this potential difference drops below a minimum value within the phase of the polarisation curve corresponding to initiation of passivation. |
| format | Patent |
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Application of the pulsed voltage is stopped when the potential difference between the electrode and the metal part which is measured in the zero intervals between pulses exceeds a given value within the range at which passivation of the metal part takes place and is only reapplied when this potential difference drops below a minimum value within the phase of the polarisation curve corresponding to initiation of passivation.</description><language>ger</language><subject>CHEMICAL SURFACE TREATMENT ; CHEMISTRY ; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL ; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL ; COATING MATERIAL WITH METALLIC MATERIAL ; COATING METALLIC MATERIAL ; DIFFUSION TREATMENT OF METALLIC MATERIAL ; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL ; METALLURGY ; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION</subject><creationdate>1981</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19810514&DB=EPODOC&CC=DE&NR=3041129A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19810514&DB=EPODOC&CC=DE&NR=3041129A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>TODOROV,. 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Application of the pulsed voltage is stopped when the potential difference between the electrode and the metal part which is measured in the zero intervals between pulses exceeds a given value within the range at which passivation of the metal part takes place and is only reapplied when this potential difference drops below a minimum value within the phase of the polarisation curve corresponding to initiation of passivation.</description><subject>CHEMICAL SURFACE TREATMENT</subject><subject>CHEMISTRY</subject><subject>COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL</subject><subject>COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL</subject><subject>COATING MATERIAL WITH METALLIC MATERIAL</subject><subject>COATING METALLIC MATERIAL</subject><subject>DIFFUSION TREATMENT OF METALLIC MATERIAL</subject><subject>INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL</subject><subject>METALLURGY</subject><subject>SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1981</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNjb0KwkAQhK-xEPUd9gUEz9hYxruNt5jbwP2kSBOCnJVoIFY-vVcYsLQamPlmZineLbqqNA4ZImtoG-dImRD5DF204JWJocs2g8VQ1nXmMgNIjBaUQUsZwTklTzhPEfsT-oZ1dn46-Y9JXbDmtVjchvuUNl9dCagwKLNN47NP0zhc0yO9eo3F7iDl_ljK4g_kA-yXOoY</recordid><startdate>19810514</startdate><enddate>19810514</enddate><creator>TODOROV,. 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MITSCHEV,MINTSCHO</au><au>GEORGIEV</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>VERFAHREN UND VORRICHTUNG ZUM SCHUTZ VON METALLEN VOR EINEM CHEMISCHEN METALLISIEREN UND INSBESONDERE VOR EINEM VERNICKELN</title><date>1981-05-14</date><risdate>1981</risdate><abstract>In order to prevent unintentional metallisation of metal articles in contact with electrolytes for chemical metallisation from taking place, an electrode (2) is immersed in the solution which is contacting the metal part (1) and a pulsed unipolar voltage is applied between the metal part and the electrode. This voltage possesses an amplitude exceeding a value in the phase of the polarisation curve for the metal part corresponding to initiation of passivation of the metal part. Application of the pulsed voltage is stopped when the potential difference between the electrode and the metal part which is measured in the zero intervals between pulses exceeds a given value within the range at which passivation of the metal part takes place and is only reapplied when this potential difference drops below a minimum value within the phase of the polarisation curve corresponding to initiation of passivation.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION |
| title | VERFAHREN UND VORRICHTUNG ZUM SCHUTZ VON METALLEN VOR EINEM CHEMISCHEN METALLISIEREN UND INSBESONDERE VOR EINEM VERNICKELN |
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