US1452281A - Metallizing articles - Google Patents

Metallizing articles Download PDF

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Publication number
US1452281A
US1452281A US49982021A US1452281A US 1452281 A US1452281 A US 1452281A US 49982021 A US49982021 A US 49982021A US 1452281 A US1452281 A US 1452281A
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United States
Prior art keywords
article
silver
articles
metallizing
solution
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 - Lifetime
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Inventor
Marino Quintin
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Individual
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Individual
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Priority to US49982021 priority Critical patent/US1452281A/en
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Publication of US1452281A publication Critical patent/US1452281A/en
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
    • C04B41/51—Metallising, e.g. infiltration of sintered ceramic preforms with molten metal
    • C04B41/5116—Ag or Au
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
    • C04B41/81—Coating or impregnation
    • C04B41/85—Coating or impregnation with inorganic materials
    • C04B41/88—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
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/18—Pretreatment of the material to be coated
    • C23C18/1851—Pretreatment of the material to be coated of surfaces of non-metallic or semiconducting in organic material
    • C23C18/1872—Pretreatment of the material to be coated of surfaces of non-metallic or semiconducting in organic material by chemical pretreatment
    • C23C18/1886—Multistep pretreatment
    • C23C18/1889—Multistep pretreatment with use of metal first
    • 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
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/31—Coating with metals
    • C23C18/42—Coating with noble metals
    • C23C18/44—Coating with noble metals using reducing agents

Definitions

  • This invention relates to a process for coating ceramic ware, such as articles made of porcelain, china, pottery, terra cotta, glass and similar electrically non-conductive substances, with a strongly adherent layer of a metal or metallic alloy.
  • Such an article is usually coated or finished with a glaze or fusible enamel, and, if so coated or finished, it is necessary to remove this coating by a preparatory treatment which consists in sumb-itting the ar ticle to the action of hydrofluoric acid vapours, emery, sand blast, etc, so as to render the surface porous and absorbent. It is preferable, however, that the articles to be coated or plated should be left unglazed with a biscuit surface.
  • I first paint or spray on to the surface of the article to be treated, or dip the article into, a solution of 10% by weight, of nitrate of silver dissolved in alcohol or in a solution of equal parts of alcohol and ether, alcohol alone being preferable, and then allow the alcohol to evaporate.
  • the article is then washed in cold water and is ready to receive by usual plating methods the coating of metal, such as gold, silver, copper, brass, nickel, cobalt, etc, etc, or of a metallic alloy.
  • metal such as gold, silver, copper, brass, nickel, cobalt, etc, etc, or of a metallic alloy.
  • a process of metallizing articles composed essentially of non-conductive ceramic Ware which comprises applying to the surface of the article, while such surface is substantially free from glaze, a solution of silver nitrate in an alcoholic solvent, allowing the alcohol to evaporate, applying to the surface a reducing agent containing the formic acid radical, brushing the surface of the article with a metallic brush, applying to the surface of the article a warm solution containing silver cyanide, washing the article, and thereafter electro-depositing a metallic coating upon said article.
  • a process of metallizing articles composed essentially of non-conductive ceramic ware which comprises removing the glaze from the surface of said article, applying to the surface a solution of silver nitrate in an alcoholic solvent, allowing said solvent to evaporate, applying a reducing agent containing the formic acid radical to said surface, brushing the surface of the article with a metallic brush, applying a solution con taining silver cyanide to said surface, and thereafter electro-depositing a metallic coat upon said article.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Chemically Coating (AREA)
  • Electroplating Methods And Accessories (AREA)

Description

Patented Apr. 17, 1923,
UNITED STATES QUINTIN MAKING, OF HAMPSTEAD, LONDON, ENGLAND.
METALLIZING ARTICLES.
1W0 Drawing.
T 0 all whom it may concern:
Be it known that I, QUINTIN MARINO, of 6 Arkwright Road, Hampstead, London, NW. 3, England, a subject of the King of Italy, have invented certain new and useful Improvements in Metallizing Articles, of which the following i a specification.
This invention relates to a process for coating ceramic ware, such as articles made of porcelain, china, pottery, terra cotta, glass and similar electrically non-conductive substances, with a strongly adherent layer of a metal or metallic alloy.
Such an article is usually coated or finished with a glaze or fusible enamel, and, if so coated or finished, it is necessary to remove this coating by a preparatory treatment which consists in sumb-itting the ar ticle to the action of hydrofluoric acid vapours, emery, sand blast, etc, so as to render the surface porous and absorbent. It is preferable, however, that the articles to be coated or plated should be left unglazed with a biscuit surface.
According to my invention, I first paint or spray on to the surface of the article to be treated, or dip the article into, a solution of 10% by weight, of nitrate of silver dissolved in alcohol or in a solution of equal parts of alcohol and ether, alcohol alone being preferable, and then allow the alcohol to evaporate. I then brush or spray the surface of the article with, or dip the article into, a 1% by weight aqueous solutiton of formic acid or form-ate of sodium, potassium or ammonium, whereopon a White film of pure silver, produced by the reducing action of the formic acid or formate of sodium, potassium or ammonium, will, in a few minutes, appear on the surface of the article. I then brush the article with a brush made of fine wire such as brass, zinc, aluminium, etc., (but preferably brass),
Application filed September 10, 1921.
Serial No. 499,820.
and then dip the article into a warm (about 90. to 100 F.) solution of cyanide of silver (about 3 ozs. of metallic silver per quart of Water) for one or tWo minutes. The'surface then exhibits a more pronounced c0at-.
ing of silver. The article is then washed in cold water and is ready to receive by usual plating methods the coating of metal, such as gold, silver, copper, brass, nickel, cobalt, etc, etc, or of a metallic alloy.
When treated as above set forth the article is rendered highly conductive,so that it is only necessary to have one point of contact.
I claim 1. A process of metallizing articles composed essentially of non-conductive ceramic Ware, which comprises applying to the surface of the article, while such surface is substantially free from glaze, a solution of silver nitrate in an alcoholic solvent, allowing the alcohol to evaporate, applying to the surface a reducing agent containing the formic acid radical, brushing the surface of the article with a metallic brush, applying to the surface of the article a warm solution containing silver cyanide, washing the article, and thereafter electro-depositing a metallic coating upon said article.
2. A process of metallizing articles composed essentially of non-conductive ceramic ware, which comprises removing the glaze from the surface of said article, applying to the surface a solution of silver nitrate in an alcoholic solvent, allowing said solvent to evaporate, applying a reducing agent containing the formic acid radical to said surface, brushing the surface of the article with a metallic brush, applying a solution con taining silver cyanide to said surface, and thereafter electro-depositing a metallic coat upon said article.
QUINTIN MARINO.
US49982021 1921-09-10 1921-09-10 Metallizing articles Expired - Lifetime US1452281A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2447379A (en) * 1943-04-21 1948-08-17 Focal Company Process for metalizing nonmetallic articles
US2474502A (en) * 1944-02-29 1949-06-28 Charles T Suchy Metallization of electrically nonconductive fabrics, fibrous materials, and porous materials

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2447379A (en) * 1943-04-21 1948-08-17 Focal Company Process for metalizing nonmetallic articles
US2474502A (en) * 1944-02-29 1949-06-28 Charles T Suchy Metallization of electrically nonconductive fabrics, fibrous materials, and porous materials

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