DE601408C - Process for preventing tarnishing of objects made of nickel, copper and alloys of these metals - Google Patents

Process for preventing tarnishing of objects made of nickel, copper and alloys of these metals

Info

Publication number
DE601408C
DE601408C DEV27314D DEV0027314D DE601408C DE 601408 C DE601408 C DE 601408C DE V27314 D DEV27314 D DE V27314D DE V0027314 D DEV0027314 D DE V0027314D DE 601408 C DE601408 C DE 601408C
Authority
DE
Germany
Prior art keywords
metals
copper
alloys
nickel
objects made
Prior art date
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
Application number
DEV27314D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DR FINCKH GmbH
Original Assignee
DR FINCKH GmbH
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
Priority to DEV26875D priority Critical patent/DE572342C/en
Application filed by DR FINCKH GmbH filed Critical DR FINCKH GmbH
Priority to DEV27314D priority patent/DE601408C/en
Priority to US612646A priority patent/US1995225A/en
Priority to GB14541/32A priority patent/GB395491A/en
Priority to FR737433D priority patent/FR737433A/en
Application granted granted Critical
Publication of DE601408C publication Critical patent/DE601408C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/24—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/48—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Electroplating Methods And Accessories (AREA)

Description

Verfahren zur Verhinderung des Anlaufens von Gegenständen aus Nickel, Kupfer und Legierungen dieser Metalle Im Hauptpatent ist gezeigt worden, daß aus Silber oder einer Silberlegierung bestehende Gegenstände dadurch gegen Anlaufen der Oberfläche geschützt werden können, daß die zu behandelnden Gegenstände in eine verdünnte Lösung getaucht werden, die Chromsäure, Kupferammoniumchlorid oder Persulfate einzeln oder im Gemisch enthält. Durch diese Behandlung wird eine unsichtbare und die Farbe und den Glanz der Metalloberfläche nicht verändernde Schutzschicht hervorgerufen, die gegen den Angriff solcher Stoffe schützt, die sonst das Anläufen verursachen, insbesondere also gegen den Angriff von Schwefelverbindungen.-Gemäß vorliegender Erfindung wird diese Art des Anlaufschutzes auf andere Metalle als Silber, nämlich auf Nickel und Kupfer und Legierungen dieser Metalle, erstreckt, jedoch kommt hierbei die Tauchbehandlung mit ktipferainmoititimchlor i dhaltig en Lösungen nicht in Betracht.Methods of preventing tarnishing of nickel objects, Copper and alloys of these metals. The main patent has shown that from Objects made of silver or a silver alloy thereby prevent tarnishing the surface can be protected that the objects to be treated in a Dilute solution containing chromic acid, copper ammonium chloride or persulfates contains individually or as a mixture. Through this treatment becomes an invisible and the color and luster of the metal surface is not changed, which protects against the attack of substances that would otherwise cause tarnishing, in particular against attack by sulfur compounds.-According to the present Invention this type of tarnish protection is applied to metals other than silver, viz to nickel and copper and alloys of these metals, but here comes immersion treatment with solutions containing ktipferainmoitimchlor i d should not be considered.

Auch bei den zuletzt genannten Metallen ergibt sich ein Anlaufschutz von überraschend guter Wirkung und vor allem derart, daß weder der Glanz noch die Metallfarbe verändert wird.Tarnish protection is also provided for the last-mentioned metals of surprisingly good effect and above all in such a way that neither the gloss nor the Metal color is changed.

Das Verfahren, um die Schutzwirkung hervorzubringen, entspricht im wesentlichen genau dem im Hauptpatent angegebenen.The process to produce the protective effect corresponds to im essentially exactly as stated in the main patent.

Außer nach dem im Hauptpatent angegebenen Beispiel kann auch nach folgendem Beispiel gearbeitet werden: Nach gründlicher, am besten elektrolytischer Entfettung werden die Waren durch Spülen mit Wasser zunächst von der anhaftenden Entfettungslauge befreit. Danach taucht man sie etwa 3 bis 6 Minuten lang in eine Lösung, die etwa ioo g Kalium- oder Natriumdichromat im Liter enthält. Dann werden die Waren entsprechend dem Beispiel des Hauptpatentes weiterbehandelt.Besides the example given in the main patent, you can also use following example can be worked: After thorough, preferably electrolytic The goods are degreased by rinsing them with water first of the adhering Degreasing liquor freed. Then you immerse them in one for about 3 to 6 minutes Solution that contains around 100 g of potassium or sodium dichromate per liter. Then will the goods are further treated according to the example of the main patent.

Claims (1)

PATENTANSPRUCH: Die Anwendung des Verfahrens zur Verhinderung des Anlaufens von Silberoberflächen nach Patent 572 342 auf Gegenstände aus Nickel, Kupfer und Legierungen dieser Metalle mit Ausnahme der Verwendung kupferammoniumchloridhaltiger Lösungen.PATENT CLAIM: The application of the method to prevent the Tarnishing of silver surfaces according to patent 572 342 on objects made of nickel, Copper and alloys of these metals with the exception of the use of copper ammonium chloride Solutions.
DEV27314D 1931-05-23 1931-09-17 Process for preventing tarnishing of objects made of nickel, copper and alloys of these metals Expired DE601408C (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DEV26875D DE572342C (en) 1931-05-23 1931-05-24 Process for preventing tarnishing of surfaces made of silver or a silver alloy
DEV27314D DE601408C (en) 1931-05-23 1931-09-17 Process for preventing tarnishing of objects made of nickel, copper and alloys of these metals
US612646A US1995225A (en) 1931-05-23 1932-05-20 Method of preventing tarnishing of metal articles
GB14541/32A GB395491A (en) 1931-05-23 1932-05-23 A process for preventing the tarnishing of the surface of silver and its alloys
FR737433D FR737433A (en) 1931-05-23 1932-05-23 Process to prevent tarnishing of metal surfaces

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE1995225X 1931-05-23
DE737433X 1931-05-23
DE395491X 1931-05-23
DEV26875D DE572342C (en) 1931-05-23 1931-05-24 Process for preventing tarnishing of surfaces made of silver or a silver alloy
DEV27314D DE601408C (en) 1931-05-23 1931-09-17 Process for preventing tarnishing of objects made of nickel, copper and alloys of these metals

Publications (1)

Publication Number Publication Date
DE601408C true DE601408C (en) 1934-08-15

Family

ID=61187870

Family Applications (2)

Application Number Title Priority Date Filing Date
DEV26875D Expired DE572342C (en) 1931-05-23 1931-05-24 Process for preventing tarnishing of surfaces made of silver or a silver alloy
DEV27314D Expired DE601408C (en) 1931-05-23 1931-09-17 Process for preventing tarnishing of objects made of nickel, copper and alloys of these metals

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DEV26875D Expired DE572342C (en) 1931-05-23 1931-05-24 Process for preventing tarnishing of surfaces made of silver or a silver alloy

Country Status (4)

Country Link
US (1) US1995225A (en)
DE (2) DE572342C (en)
FR (1) FR737433A (en)
GB (1) GB395491A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2548419A (en) * 1945-08-23 1951-04-10 Poor & Co Method for production of lustrous zinc
BE547815A (en) * 1955-05-14
US5219617A (en) * 1989-09-19 1993-06-15 Michigan Chrome And Chemical Company Corrosion resistant coated articles and process for making same
BE1005463A3 (en) * 1990-11-03 1993-08-03 Glaverbel Production reflecting objects.
JP6092219B2 (en) * 2012-07-31 2017-03-08 株式会社大和化成研究所 Electro silver plating solution

Also Published As

Publication number Publication date
FR737433A (en) 1932-12-12
US1995225A (en) 1935-03-19
GB395491A (en) 1933-07-20
DE572342C (en) 1933-03-14

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