GB748320A - Improvements in the production of atmospheres for the gaseous cementation of ferrous alloys - Google Patents

Improvements in the production of atmospheres for the gaseous cementation of ferrous alloys

Info

Publication number
GB748320A
GB748320A GB283054A GB283054A GB748320A GB 748320 A GB748320 A GB 748320A GB 283054 A GB283054 A GB 283054A GB 283054 A GB283054 A GB 283054A GB 748320 A GB748320 A GB 748320A
Authority
GB
United Kingdom
Prior art keywords
liquid
water
gaseous
added
per cent
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
GB283054A
Inventor
Louis George Whybro Palethorpe
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.)
Wild Barfield Electric Furnaces Ltd
Original Assignee
Wild Barfield Electric Furnaces 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.)
Filing date
Publication date
Priority to NL106151D priority Critical patent/NL106151C/xx
Priority to BE545645D priority patent/BE545645A/xx
Priority to NL95881D priority patent/NL95881C/xx
Priority to BE534801D priority patent/BE534801A/xx
Application filed by Wild Barfield Electric Furnaces Ltd filed Critical Wild Barfield Electric Furnaces Ltd
Priority to GB283054A priority patent/GB748320A/en
Priority to CH332227D priority patent/CH332227A/en
Priority to DEW15762A priority patent/DE1008763B/en
Priority to FR1120639D priority patent/FR1120639A/en
Priority to ES0219815A priority patent/ES219815A1/en
Priority to GB205956A priority patent/GB804864A/en
Priority to DEW18512A priority patent/DE1017634B/en
Publication of GB748320A publication Critical patent/GB748320A/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
    • C23C8/20—Carburising
    • C23C8/22—Carburising of ferrous surfaces
    • 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
    • C23C8/28—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 more than one element being applied in one step
    • C23C8/30—Carbo-nitriding
    • C23C8/32—Carbo-nitriding of ferrous surfaces

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

Abstract

Gases suitable for the gaseous cementation of ferrous alloys are produced by cracking a monohydric aliphatic alcohol containing from 5-30 per cent by volume of water within a heat treatment furnace at between 700 DEG and 950 DEG C. The furnace is constructed of material free from iron and the liquid to be cracked is fed into the furnace by a drip-feed arrangement. The preferred cracking liquid is iso-propyl alcohol containing 15-25 pre cent water. A nitrogenous liquid which is fully miscible with the alcohol/water mixture may be added to the cracking liquid when carbo-nitriding is required. Concentrated ammonia solution is the preferred nitrogenous liquid and is added in such quantity as to produce 2 1/2 -7\ba1/2 per cent of ammonia in the resultant atmosphere. Alternatively the ammonia could be added to the atmosphere in gaseous form. In an example using isopropyl alcohol containing 25 per cent by volume of water the gas obtained had the following composition: <TABS:0748320/II/1> Specification 588,547, [Group XII], is referred to.
GB283054A 1954-01-29 1954-01-29 Improvements in the production of atmospheres for the gaseous cementation of ferrous alloys Expired GB748320A (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
NL106151D NL106151C (en) 1954-01-29
BE545645D BE545645A (en) 1954-01-29
NL95881D NL95881C (en) 1954-01-29
BE534801D BE534801A (en) 1954-01-29
GB283054A GB748320A (en) 1954-01-29 1954-01-29 Improvements in the production of atmospheres for the gaseous cementation of ferrous alloys
CH332227D CH332227A (en) 1954-01-29 1955-01-11 Process for cementing iron and steel and their alloys in a gas atmosphere
DEW15762A DE1008763B (en) 1954-01-29 1955-01-17 Process for the preparation of atmospheres for the gas cementation of iron alloys
FR1120639D FR1120639A (en) 1954-01-29 1955-01-26 Improvements in the production of atmospheres for the gas carburizing of ferrous alloys
ES0219815A ES219815A1 (en) 1954-01-29 1955-01-28 Method of production of atmospheres for the gaseous cementation of ferrous alloys (Machine-translation by Google Translate, not legally binding)
GB205956A GB804864A (en) 1954-01-29 1956-01-20 Improvements in the production of atmospheres for the gaseous cementation of ferrousalloys
DEW18512A DE1017634B (en) 1954-01-29 1956-02-24 Process for the preparation of atmospheres for the gas cementation of iron alloys

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB283054A GB748320A (en) 1954-01-29 1954-01-29 Improvements in the production of atmospheres for the gaseous cementation of ferrous alloys
GB3471254 1954-11-30

Publications (1)

Publication Number Publication Date
GB748320A true GB748320A (en) 1956-04-25

Family

ID=32328002

Family Applications (1)

Application Number Title Priority Date Filing Date
GB283054A Expired GB748320A (en) 1954-01-29 1954-01-29 Improvements in the production of atmospheres for the gaseous cementation of ferrous alloys

Country Status (5)

Country Link
BE (1) BE534801A (en)
CH (1) CH332227A (en)
DE (1) DE1008763B (en)
FR (1) FR1120639A (en)
GB (1) GB748320A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0040094A1 (en) * 1980-05-12 1981-11-18 Air Products And Chemicals, Inc. Carburizing process utilizing atmospheres generated from nitrogen-ethanol based mixtures
US4359351A (en) 1979-10-23 1982-11-16 Air Products And Chemicals, Inc. Protective atmosphere process for annealing and or spheroidizing ferrous metals

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB629879A (en) * 1947-12-30 1949-09-29 Gen Electric Co Ltd Improvements in or relating to the carburization of iron and iron alloys
FR1000215A (en) * 1949-11-16 1952-02-11 Renault Gas preparation for the case-hardening of steel
DE918933C (en) * 1950-07-27 1954-10-07 Robert Von Linde Dipl Ing Process for the production of a flammable bright glow gas

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4359351A (en) 1979-10-23 1982-11-16 Air Products And Chemicals, Inc. Protective atmosphere process for annealing and or spheroidizing ferrous metals
EP0040094A1 (en) * 1980-05-12 1981-11-18 Air Products And Chemicals, Inc. Carburizing process utilizing atmospheres generated from nitrogen-ethanol based mixtures

Also Published As

Publication number Publication date
CH332227A (en) 1958-08-31
DE1008763B (en) 1957-05-23
FR1120639A (en) 1956-07-10
BE534801A (en)

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