US880405A - Process for producing poreless and well-adhering electrodeposits. - Google Patents

Process for producing poreless and well-adhering electrodeposits. Download PDF

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Publication number
US880405A
US880405A US38752807A US1907387528A US880405A US 880405 A US880405 A US 880405A US 38752807 A US38752807 A US 38752807A US 1907387528 A US1907387528 A US 1907387528A US 880405 A US880405 A US 880405A
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United States
Prior art keywords
poreless
adhering
producing
well
electrodeposits
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Legal status (The legal status 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 status listed.)
Expired - Lifetime
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US38752807A
Inventor
Harry Schmidt
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Individual
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Individual
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Priority to US38752807A priority Critical patent/US880405A/en
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Expired - Lifetime legal-status Critical Current

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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
    • C25D5/60—Electroplating characterised by the structure or texture of the layers
    • C25D5/623—Porosity of the layers
    • 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
    • C25D5/10—Electroplating with more than one layer of the same or of different metals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S29/00—Metal working
    • Y10S29/012—Method or apparatus with electroplating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/922—Static electricity metal bleed-off metallic stock
    • Y10S428/9335—Product by special process
    • Y10S428/934—Electrical process
    • Y10S428/935—Electroplating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]

Definitions

  • lClectrodcposi-ted metal does not generally afford sufficient protection against chemical influences, because, unless extremely thick, it contains innumerable fine pores, through which the metal to be protected can be at tacked. In many cases chemical action is assisted by deeompesinglocal electric currents, which circulate between the base metal and the electrodeposit when moist. In order to afford an effective protection of the base metal, the pores in the electrodeposit must therefore be closed.
  • This is elfected according to the present invention by first coatin -by any suitable process such as electroplating or dippin'gthe metal to beelectroplated, with a metal or alloy having a lower melting point than the final eleetrodeposit, whereupon it is provided I with the electrodeposit, and, after drying and cleaning the surface, is then subjected to a t-en'iperature higher than the melting point of the intermediate coating.
  • This coating accordingly melts, and becomes intimately united with both the base metal and electrodeposit, simultaneously filling out the pores base metal and electrodeposit.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electroplating Methods And Accessories (AREA)

Description

ITED STATES PATENT OFFICE.
HARRY' SCHMIDT, Ol COLOGNE, (:EltMhNY.
Specification of Letters Patent.
Patented Feb. 25, 1 908.
Application filed August '7. 1907. Serial No, 387.528.
To all whom it may concern:
Be it known that I, HARRY SCHMIDT, a subject of the Kingof Prussia, residing at Cologne-on-the-Rhine, in the Kingdom of Prussia and German Empire, have invented a new and useful Improvement in Processes for Producing Poreless and Well-Adhering Electrodeposits, of which the following is a specification.
lClectrodcposi-ted metal does not generally afford sufficient protection against chemical influences, because, unless extremely thick, it contains innumerable fine pores, through which the metal to be protected can be at tacked. In many cases chemical action is assisted by deeompesinglocal electric currents, which circulate between the base metal and the electrodeposit when moist. In order to afford an effective protection of the base metal, the pores in the electrodeposit must therefore be closed. This is elfected according to the present invention by first coatin -by any suitable process such as electroplating or dippin'gthe metal to beelectroplated, with a metal or alloy having a lower melting point than the final eleetrodeposit, whereupon it is provided I with the electrodeposit, and, after drying and cleaning the surface, is then subjected to a t-en'iperature higher than the melting point of the intermediate coating. This coating accordingly melts, and becomes intimately united with both the base metal and electrodeposit, simultaneously filling out the pores base metal and electrodeposit.
What 1 claim and desire to secure by Letters Patent is2- The process for producing poreless and well adhering electredeposits, which consists in first providing the metal to be electroplated with a coating of a metal or alloy which melts at a lower temperature than the final electrodeposit, in then electrolytically depositing the final coating, and in melting the intermediate coating, substantially as, and for the purpose, set forth. 7
In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.
HARRY SCHMIDT. Witnesses:
LOUIS VANDoRN, M. KNEPPERS.
contained in the latter, without injuring said
US38752807A 1907-08-07 1907-08-07 Process for producing poreless and well-adhering electrodeposits. Expired - Lifetime US880405A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US38752807A US880405A (en) 1907-08-07 1907-08-07 Process for producing poreless and well-adhering electrodeposits.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US38752807A US880405A (en) 1907-08-07 1907-08-07 Process for producing poreless and well-adhering electrodeposits.

Publications (1)

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US880405A true US880405A (en) 1908-02-25

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US38752807A Expired - Lifetime US880405A (en) 1907-08-07 1907-08-07 Process for producing poreless and well-adhering electrodeposits.

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2517762A (en) * 1944-09-23 1950-08-08 Joseph B Brennan Bearing manufacture
US2756200A (en) * 1952-08-08 1956-07-24 Gen Motors Corp Porous article impregnation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2517762A (en) * 1944-09-23 1950-08-08 Joseph B Brennan Bearing manufacture
US2756200A (en) * 1952-08-08 1956-07-24 Gen Motors Corp Porous article impregnation

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