FR2018029A1 - Augmenting the silicon contact of steel by treat - ment with silicon tetrachloride in the gas phase - Google Patents

Augmenting the silicon contact of steel by treat - ment with silicon tetrachloride in the gas phase

Info

Publication number
FR2018029A1
FR2018029A1 FR6930130A FR6930130A FR2018029A1 FR 2018029 A1 FR2018029 A1 FR 2018029A1 FR 6930130 A FR6930130 A FR 6930130A FR 6930130 A FR6930130 A FR 6930130A FR 2018029 A1 FR2018029 A1 FR 2018029A1
Authority
FR
France
Prior art keywords
steel
silicon
gas phase
degrees
chamber
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.)
Withdrawn
Application number
FR6930130A
Other languages
French (fr)
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.)
Allegheny Ludlum Steel Corp
Original Assignee
Allegheny Ludlum Steel Corp
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 Allegheny Ludlum Steel Corp filed Critical Allegheny Ludlum Steel Corp
Publication of FR2018029A1 publication Critical patent/FR2018029A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • 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
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/06—Solid state diffusion of only metal elements or silicon into metallic material surfaces using gases
    • C23C10/08—Solid state diffusion of only metal elements or silicon into metallic material surfaces using gases only one element being diffused

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical Vapour Deposition (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)
  • Silicon Compounds (AREA)

Abstract

Steel especially suitable for the manufacture of transformers because of low heat losses is produced by treatment with SiCl4 in the gas phase at 1038-1260 degrees C of a steel containing less than 3.5% Si to increase the Si content to about 6%. An apparatus suitable for this process comprises means for transporting a steel strip or band; a chamber in which the steel is preheated to 1038 degrees C in an inert gas; a chamber in which the steel is contacted with an inert gas, 10% of which has been saturated with SiCl4 at 27 degrees C; and a cooling chamber filled with an inert gas. Gases from the treatment chamber, including gaseous FeCl3 being a by-product of this process, are passed to a condenser. By this method high-silicon steels with oriented grain structure are obtained.
FR6930130A 1968-09-13 1969-09-04 Augmenting the silicon contact of steel by treat - ment with silicon tetrachloride in the gas phase Withdrawn FR2018029A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US75964168A 1968-09-13 1968-09-13

Publications (1)

Publication Number Publication Date
FR2018029A1 true FR2018029A1 (en) 1970-05-29

Family

ID=25056412

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6930130A Withdrawn FR2018029A1 (en) 1968-09-13 1969-09-04 Augmenting the silicon contact of steel by treat - ment with silicon tetrachloride in the gas phase

Country Status (4)

Country Link
BE (1) BE738691A (en)
DE (1) DE1945298A1 (en)
ES (1) ES371321A1 (en)
FR (1) FR2018029A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3585686D1 (en) * 1984-09-28 1992-04-23 Nippon Kokan Kk METHOD FOR PRODUCING THIN MAGNETIC STEEL SHEETS OF HIGH PERMEABILITY.
FR2587730A1 (en) * 1985-09-23 1987-03-27 Rhone Poulenc Rech Process for siliciding a ferrous metal substrate and silicided ferrous metal substrate
FR2649995B1 (en) * 1989-07-19 1993-08-13 Air Liquide PROCESS FOR SILICIURATION OF STEELS BY CHEMICAL DEPOSITION IN THE GAS PHASE

Also Published As

Publication number Publication date
ES371321A1 (en) 1971-09-01
DE1945298A1 (en) 1970-03-19
BE738691A (en) 1970-03-10

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Legal Events

Date Code Title Description
ST Notification of lapse