Classifications

• • C—CHEMISTRY; METALLURGY
  • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
  • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
  • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
  • C25D5/34—Pretreatment of metallic surfaces to be electroplated
  • C25D5/38—Pretreatment of metallic surfaces to be electroplated of refractory metals or nickel
• • C—CHEMISTRY; METALLURGY
  • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
  • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
  • C25B1/00—Electrolytic production of inorganic compounds or non-metals
  • C25B1/01—Products
  • C25B1/24—Halogens or compounds thereof
  • C25B1/26—Chlorine; Compounds thereof
• • C—CHEMISTRY; METALLURGY
  • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
  • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
  • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
  • C25B9/60—Constructional parts of cells
  • C25B9/65—Means for supplying current; Electrode connections; Electric inter-cell connections
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
  • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
  • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
  • H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys

Definitions

• the method for the N0 Drawillg- Filed 1969, 18,397 production of an assembly in which there is electrical Claims P y, pp f great England P 15, 1959 contact between titanium and graphite comprises pro- 6 Claimsviding the surface of the titanium to face the graphite
• the present invention relates to improvements in or 10 t deposited f i g Of a platinum metal prior to relating to a method for the production of assemblies hnhglhg the tltehlum and graphite
• 531d eleetrleal comprising titanium and particularly to a method for eohtaetthe production of assemblies involving contact between PYeteTah1Y S a1d Surface of t tltanlhm is etched P titanium and graphite as for instance in an interference to the depoeltloh Q the Platlhhm metal-
• Proslstmg essehhally of tltahlhmlonged electrolysis at a high anodic current density has By Way of example the method of the If lhveh' shown furthermore no apparent change in the smooth be applied to a lhercury cell having an anode bright Surface of atitanium rod or anode 1 7.7 mches long of platinum coated expanded sheet Measurements of the electrical contact resistance up f clalmed Inter aha eopehdihg PP to very high contact pressures (3600 lb./in.
• the object of the present invention is to provide a 40 in mlllivolts per ka./m. anodic current density. method of lowering electrical contact resistance between titanium and graphite in assemblies of titanium and Cup Without With hit platinum platinum
• Experiments have therefore been carried out to measure the titanium to graphite electrical contact resistance g gg gg eg 2 at various contact pressures for titanium etched with anap lytical reagent quality concentrated hydrochloric acid for 4 days, similarly etched followed by rhodium electrm
• These values show the marked superiority of the elecdeposition, similarly etched followed by platinum electrodeposlted Platinum coated titanium t0 graphite C011 trodeposition, similarly etched followed by five coats of tact as against a titanium t0 graphite Contact and 3150 a paint applied platinum-bearing preparation with the w that the Stamped P, Where the interference is fi i f each applied coat at 500 C and nometched maintained
• An assembly for the passage of electrical current therethrough comprising a body of titanium, a surface of which has a platinum metal coating deposited thereon, a graphite body and means for maintaining said graphite body and said titanium body in 'electrical contact under pressure directly through said coating whereby the electrical contact resistance between 'said graphite body and titanium body is decreased.
• an anode assembly comprising a body of titanium, a surface of which has a platinum metal coating deposited thereon, a graphite body and means for maintaining said graphite body and said titanium body in electrical contact under pressure directly through said coating whereby the electrical contact resistance between said graphite body and titanium body is decreased.

Landscapes

• Chemical & Material Sciences (AREA)
• Metallurgy (AREA)
• Engineering & Computer Science (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Electrochemistry (AREA)
• Materials Engineering (AREA)
• Organic Chemistry (AREA)
• Inorganic Chemistry (AREA)
• Electrodes For Compound Or Non-Metal Manufacture (AREA)
• Motor Or Generator Current Collectors (AREA)
• Electrolytic Production Of Metals (AREA)
• Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
• Electroplating Methods And Accessories (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=10010779

Family Applications (1)

Country Status (8)

Cited By (4)

Citations (5)

• 0
  • NL NL110254D patent/NL110254C/xx active
  • NL NL250202D patent/NL250202A/xx unknown
• 1959
  • 1959-04-15 GB GB12768/59A patent/GB881625A/en not_active Expired
• 1960
  • 1960-03-31 US US18807A patent/US3074858A/en not_active Expired - Lifetime
  • 1960-04-06 DE DE19601421369 patent/DE1421369A1/de active Pending
  • 1960-04-11 ES ES0257296A patent/ES257296A1/es not_active Expired
  • 1960-04-14 CH CH422360A patent/CH453313A/de unknown
  • 1960-04-14 SE SE376460A patent/SE213197C1/sv unknown
  • 1960-04-15 FR FR824542A patent/FR1254315A/fr not_active Expired

Patent Citations (5)

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