US1672180A - Treatment of metal surfaces - Google Patents

Treatment of metal surfaces Download PDF

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Publication number
US1672180A
US1672180A US172565A US17256527A US1672180A US 1672180 A US1672180 A US 1672180A US 172565 A US172565 A US 172565A US 17256527 A US17256527 A US 17256527A US 1672180 A US1672180 A US 1672180A
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US
United States
Prior art keywords
metal
action
carbon disulphide
treatment
metal surfaces
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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US172565A
Inventor
Smith Walter
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.)
Expanded Metal Co Ltd
Original Assignee
Expanded Metal Co Ltd
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.)
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Publication date
Application filed by Expanded Metal Co Ltd filed Critical Expanded Metal Co Ltd
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Publication of US1672180A publication Critical patent/US1672180A/en
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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
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied

Definitions

  • This invention relates to a process for 6 treating metal surfaces, whereby the article or object treated does not become corroded when heated to a high temperature or become less liable to corrosion.
  • metal articles 10 or objects are given a coating of the sulphide of the metal in question through the action of carbon disulphide on the heated article or object.
  • the surface of the article treated is. if necessary, before treatment with the carbon disulphide, given a thin firmly adherent film such as can be obtained usually by heating in the presence of air.
  • the container has an inlet for air and an inlet for carbon disulphide vapour.
  • the articles are, if not having a film of oxide, subjected when at a temperature of above 600 C. to the action of air for a few seconds. Carbon disulphide is Down/admitted at, say a pressure of 4 lbs, for about ten minutes, while the articles are at a temperature of. say, 700 C.
  • the invention is particularly applicable for aluminum and magnesium and metals coated therewith.
  • What 1 claim is 1.
  • a process for treating a metal surface so as to protect the basic metal from corrosion which consists in subjecting the metal surface whilst in an oxidized state to the action of carbon disulphide whereby a coating of the sulphide of the basic metal is produced.
  • a process for treating a. metal surface so as to protect. the basic metal from corrosion which consists in exposing the metal to oxidizing conditions to produce a film of oxide at the surface and then subjecting the oxidized surface at an elevated temperature I to the action of carbon disulphide.
  • a process for treating a metal surface so as to protect the basic metal from corrosion which consists in subjecting the metal surface at an elevated temperature firstlyto the action of air and then to the action of carbon disulphide.

Landscapes

  • 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)

Description

Patented June 5, 1928.
UNITED STTES PATENT METAL COMPANY, LIMITED, LONDON, ENGLAND.
TBEATMEN T 01 METALSULRFAGES.
No Drawing. Application filed March 3, 1927, Serial No. 172,565, and in Great Britain March 17, 1928.
Many metals when heated to a high temperature when exposed to the atmosphere become corroded.
This invention relates to a process for 6 treating metal surfaces, whereby the article or object treated does not become corroded when heated to a high temperature or become less liable to corrosion.
According to this invention metal articles 10 or objects are given a coating of the sulphide of the metal in question through the action of carbon disulphide on the heated article or object.
As the metallic sulphide is formed by the action of the carbon disulphide vapour upon the oxide of the metal, the surface of the article treated is. if necessary, before treatment with the carbon disulphide, given a thin firmly adherent film such as can be obtained usually by heating in the presence of air.
As an example of treating steel articles are packed in a closed container so that any vapour or air can have free access to the surface to be treated. The container has an inlet for air and an inlet for carbon disulphide vapour.
The articles are, if not having a film of oxide, subjected when at a temperature of above 600 C. to the action of air for a few seconds. Carbon disulphide is Down/admitted at, say a pressure of 4 lbs, for about ten minutes, while the articles are at a temperature of. say, 700 C.
The invention is particularly applicable for aluminum and magnesium and metals coated therewith.
What 1 claim is 1. A process for treating a metal surface so as to protect the basic metal from corrosion which consists in subjecting the metal surface whilst in an oxidized state to the action of carbon disulphide whereby a coating of the sulphide of the basic metal is produced.
2. A process for treating a. metal surface so as to protect. the basic metal from corrosion which consists in exposing the metal to oxidizing conditions to produce a film of oxide at the surface and then subjecting the oxidized surface at an elevated temperature I to the action of carbon disulphide.
3. A process for treating a metal surface so as to protect the basic metal from corrosion which consists in subjecting the metal surface at an elevated temperature firstlyto the action of air and then to the action of carbon disulphide.
In testimony that I claim the foregoing as my invention I have signed my name this 16th day of February. 1927.
WALTER SMITH.
US172565A 1926-03-17 1927-03-03 Treatment of metal surfaces Expired - Lifetime US1672180A (en)

Applications Claiming Priority (1)

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GB1672180X 1926-03-17

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US1672180A true US1672180A (en) 1928-06-05

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US172565A Expired - Lifetime US1672180A (en) 1926-03-17 1927-03-03 Treatment of metal surfaces

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4123291A (en) * 1976-12-23 1978-10-31 Armco Steel Corporation Method of treating steel strip and sheet surfaces, in sulfur-bearing atmosphere, for metallic coating
US4140552A (en) * 1976-12-23 1979-02-20 Armco Steel Corporation Method of treating aluminum-killed and low alloy steel strip and sheet surfaces, in sulfur-bearing atmosphere, for metallic coating
WO1987002856A1 (en) * 1985-10-24 1987-05-07 Enthone, Incorporated Copper oxide treatment in printed circuit board

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4123291A (en) * 1976-12-23 1978-10-31 Armco Steel Corporation Method of treating steel strip and sheet surfaces, in sulfur-bearing atmosphere, for metallic coating
US4140552A (en) * 1976-12-23 1979-02-20 Armco Steel Corporation Method of treating aluminum-killed and low alloy steel strip and sheet surfaces, in sulfur-bearing atmosphere, for metallic coating
WO1987002856A1 (en) * 1985-10-24 1987-05-07 Enthone, Incorporated Copper oxide treatment in printed circuit board
US4717439A (en) * 1985-10-24 1988-01-05 Enthone, Incorporated Process for the treatment of copper oxide in the preparation of printed circuit boards

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