METHOD FOR REDUCING THE CONCENTRATION OF IRON IONS IN A TRIVALENT CHROMIUM ELETROPLATING BATH
Method for reducing concentration of iron ions in a trivalent chromium electroplating bath, including:(i) providing the trivalent chromium electroplating bath including trivalent chromium ions, and iron ions,(ii) subjecting at least a portion of the bath to air agitation, to obtain an air-agitated p...
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| creator | KÜHNE, Sebastian MUIGG, Michael WALTER, Anke |
| description | Method for reducing concentration of iron ions in a trivalent chromium electroplating bath, including:(i) providing the trivalent chromium electroplating bath including trivalent chromium ions, and iron ions,(ii) subjecting at least a portion of the bath to air agitation, to obtain an air-agitated portion of the bath,(iii) contacting the air-agitated portion with an ion exchange resin, to obtain a resin-treated portion of the bath, and(iv) returning the resin-treated portion of the bath to the trivalent chromium electroplating bath,provided thatthe bath provided in step (i) was or is utilized for electrodepositing chromium on a substrate applying a cathodic current density of 18 A/dm2 or more,after step (iii), iron ions in the resin-treated portion have a lower concentration than in the air-agitated portion, andafter step (iv), iron ions in the bath have a concentration below 50 mg/L. |
| format | Patent |
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MUIGG, Michael ; WALTER, Anke</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US2022389607A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2022</creationdate><topic>APPARATUS THEREFOR</topic><topic>CHEMISTRY</topic><topic>ELECTROFORMING</topic><topic>ELECTROLYTIC OR ELECTROPHORETIC PROCESSES</topic><topic>METALLURGY</topic><topic>PERFORMING OPERATIONS</topic><topic>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</topic><topic>PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS</topic><topic>SEPARATION</topic><topic>TRANSPORTING</topic><toplevel>online_resources</toplevel><creatorcontrib>KÜHNE, Sebastian</creatorcontrib><creatorcontrib>MUIGG, Michael</creatorcontrib><creatorcontrib>WALTER, Anke</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>KÜHNE, Sebastian</au><au>MUIGG, Michael</au><au>WALTER, Anke</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>METHOD FOR REDUCING THE CONCENTRATION OF IRON IONS IN A TRIVALENT CHROMIUM ELETROPLATING BATH</title><date>2022-12-08</date><risdate>2022</risdate><abstract>Method for reducing concentration of iron ions in a trivalent chromium electroplating bath, including:(i) providing the trivalent chromium electroplating bath including trivalent chromium ions, and iron ions,(ii) subjecting at least a portion of the bath to air agitation, to obtain an air-agitated portion of the bath,(iii) contacting the air-agitated portion with an ion exchange resin, to obtain a resin-treated portion of the bath, and(iv) returning the resin-treated portion of the bath to the trivalent chromium electroplating bath,provided thatthe bath provided in step (i) was or is utilized for electrodepositing chromium on a substrate applying a cathodic current density of 18 A/dm2 or more,after step (iii), iron ions in the resin-treated portion have a lower concentration than in the air-agitated portion, andafter step (iv), iron ions in the bath have a concentration below 50 mg/L.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | APPARATUS THEREFOR CHEMISTRY ELECTROFORMING ELECTROLYTIC OR ELECTROPHORETIC PROCESSES METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS SEPARATION TRANSPORTING |
| title | METHOD FOR REDUCING THE CONCENTRATION OF IRON IONS IN A TRIVALENT CHROMIUM ELETROPLATING BATH |
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