DE810096C - Process for refining metal surfaces - Google Patents

Process for refining metal surfaces

Info

Publication number
DE810096C
DE810096C DES680A DES0000680A DE810096C DE 810096 C DE810096 C DE 810096C DE S680 A DES680 A DE S680A DE S0000680 A DES0000680 A DE S0000680A DE 810096 C DE810096 C DE 810096C
Authority
DE
Germany
Prior art keywords
sulfur
containing gas
metal surfaces
refining metal
gas
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
DES680A
Other languages
German (de)
Inventor
Georges Levesque Du Rostu
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.)
Automobiles Citroen SA
Original Assignee
Automobiles Citroen SA
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
Application filed by Automobiles Citroen SA filed Critical Automobiles Citroen SA
Application granted granted Critical
Publication of DE810096C publication Critical patent/DE810096C/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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Description

Verfahren zum Veredeln von Metalloberflächen Es ist bekannt, daß mit sulfidischen Verbindungen angereicherte Oberflächen besonders für das Schmieren vorteilhafte Eigenschaften haben.Process for finishing metal surfaces It is known that with Surfaces enriched with sulfidic compounds, especially for lubrication have advantageous properties.

Die Erfindung besteht in der Erkenntnis, daB eine Metalloberfläche durch die Einwirkung einer schwefelhaltigen gasförmigen Verbindung in der Wärme oberflächlich mit Sulfiden angereichert werden kann. Diese Reaktion wird in einem Ofen durchgeführt, der zur Erzielung einer Diffusion der Schwefelverbindung in die Metalloberflächenschicht auf einer geeigneten Temperatur gehalten wird.The invention consists in the knowledge that a metal surface by the action of a sulphurous gaseous compound in the heat can be superficially enriched with sulphides. This reaction will turn into one Oven carried out to achieve diffusion of the sulfur compound in the Metal surface layer is kept at a suitable temperature.

Das schwefelhaltige Gas besteht entweder aus Schwefeldioxyd, aus Schwefelwasserstoff oder aus einer organischen Verbindung, wie z. B. Schwefelkohlenstoff, Merkaptan, Thioäther o. dgl., oder aus Komplexen, wie sie durch Spalten schwefelhaltiger Verbindungen, wie Bisulfitlauge, gewonnen werden können.The sulphurous gas consists either of sulfur dioxide or of hydrogen sulphide or from an organic compound, such as. B. carbon disulfide, mercaptan, Thioethers or the like, or from complexes, as they are obtained by splitting sulfur-containing compounds, such as bisulfite liquor, can be obtained.

Das schwefelhaltige Gas wird mit einem als Träger dienenden Gas, vorzugsweise mit einem reduzierenden Gas verdünnt, wie z. B. mit Wasserstoff oder Kohlenoxyd, Zyan, gesättigten oder nicht gesättigten Kohlenwasserstoffen, Ammoniak, mit neutralen Gasen, wie Stickstoff, oder auch mit Gemischen der vorgenannten Gase.The sulfur-containing gas is mixed with a gas serving as a carrier, preferably diluted with a reducing gas, such as. B. with hydrogen or carbon oxide, Cyan, saturated or unsaturated hydrocarbons, ammonia, with neutral Gases, such as nitrogen, or with mixtures of the aforementioned gases.

Claims (1)

PATENTANSPRÜCHE: i. Verfahren zum Veredeln von Metalloberflächen durch Anreicherung mit sulfidischen Verbindungen, dadurch gekennzeichnet, daß diese Veredelung durch eine Behandlung mit einer schwefelhaltigen gasförmigen Verbindung in der Wärme erfolgt. a. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß das schwefelhaltige Gas mit einem neutralen oder reduzierenden, als Träger dienenden Gas verdünnt wird. 3. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß als schwefelhaltiges Gas Schwefeldioxyd verwendet wird. 4. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß als schwefelhaltiges Gas Schwefelwasserstoff verwendet wird. 5. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß als schwefelhaltiges Gas eine organische Verbindung, wie Schwefelkohlenstoff, Merkaptan, Thioäther, verwendet wird. PATENT CLAIMS: i. Process for refining metal surfaces by enrichment with sulfidic compounds, characterized in that this refinement takes place by a treatment with a sulfur-containing gaseous compound in the heat. a. Process according to Claim i, characterized in that the sulfur-containing gas is diluted with a neutral or reducing gas serving as a carrier. 3. The method according to claim i, characterized in that sulfur dioxide is used as the sulfur-containing gas. 4. The method according to claim i, characterized in that hydrogen sulfide is used as the sulfur-containing gas. 5. The method according to claim i, characterized in that an organic compound such as carbon disulfide, mercaptan, thioether is used as the sulfur-containing gas.
DES680A 1948-12-31 1949-11-09 Process for refining metal surfaces Expired DE810096C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR810096X 1948-12-31

Publications (1)

Publication Number Publication Date
DE810096C true DE810096C (en) 1951-08-06

Family

ID=9254321

Family Applications (1)

Application Number Title Priority Date Filing Date
DES680A Expired DE810096C (en) 1948-12-31 1949-11-09 Process for refining metal surfaces

Country Status (1)

Country Link
DE (1) DE810096C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1242974B (en) * 1956-02-13 1967-06-22 Yawata Iron & Steel Co Process for the manufacture of semi-finished and finished products from carbon steel
DE1283643B (en) * 1960-08-09 1968-11-21 Aquitaine Petrole Method for protecting steel that is in a corrosive environment
US3965194A (en) * 1973-10-19 1976-06-22 The Lummus Company Production of formaldehyde in carbon steel reactors

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1242974B (en) * 1956-02-13 1967-06-22 Yawata Iron & Steel Co Process for the manufacture of semi-finished and finished products from carbon steel
DE1283643B (en) * 1960-08-09 1968-11-21 Aquitaine Petrole Method for protecting steel that is in a corrosive environment
US3965194A (en) * 1973-10-19 1976-06-22 The Lummus Company Production of formaldehyde in carbon steel reactors

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