GB860563A - Improved method of surface treatment for non-ferrous bodies - Google Patents

Improved method of surface treatment for non-ferrous bodies

Info

Publication number
GB860563A
GB860563A GB2024156A GB2024156A GB860563A GB 860563 A GB860563 A GB 860563A GB 2024156 A GB2024156 A GB 2024156A GB 2024156 A GB2024156 A GB 2024156A GB 860563 A GB860563 A GB 860563A
Authority
GB
United Kingdom
Prior art keywords
titanium
sparking
electrode
nitrogen
layer
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
GB2024156A
Inventor
Norman Clifford Welsh
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries 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
Application filed by Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB2024156A priority Critical patent/GB860563A/en
Publication of GB860563A publication Critical patent/GB860563A/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
    • C23C8/36—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 using ionised gases, e.g. ionitriding
    • 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
    • C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
    • C23C26/02—Coating not provided for in groups C23C2/00 - C23C24/00 applying molten material to the substrate

Landscapes

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

Abstract

A non-ferrous metal surface is hardened by electro-sparking it in the presence of at least one of the group carbon, nitrogen and oxygen, or also in the presence of an additional metal, so that there is formed on the surface a layer of a hard compound of an element of the said group with metal of the surface, or the additional metal, or both. Surfaces composed of titanium and zirconium and alloys thereof, and copper, may be hardened. The sparking electrode may be made of graphite or the additional metal, the latter being exemplified by titanium, zirconium, tantalum, vanadium, chromium, molybdenum and tungsten. Sparking may be effected in paraffin oil (to form carbide), in water (to form oxide), in nitrogen (to form nitride), in air (to form nitride and/or oxide), or from a carbon electrode in an inert atmosphere (to form carbide). In the examples: (1) a titanium carbide layer is formed on titanium by sparking in paraffin oil using a graphite electrode; (2) a titanium nitride layer is formed on titanium by sparking in air using a titanium electrode; and (3) a titanium nitride layer is formed on copper by sparking in nitrogen using a titanium electrode.
GB2024156A 1956-06-29 1956-06-29 Improved method of surface treatment for non-ferrous bodies Expired GB860563A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2024156A GB860563A (en) 1956-06-29 1956-06-29 Improved method of surface treatment for non-ferrous bodies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2024156A GB860563A (en) 1956-06-29 1956-06-29 Improved method of surface treatment for non-ferrous bodies

Publications (1)

Publication Number Publication Date
GB860563A true GB860563A (en) 1961-02-08

Family

ID=10142724

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2024156A Expired GB860563A (en) 1956-06-29 1956-06-29 Improved method of surface treatment for non-ferrous bodies

Country Status (1)

Country Link
GB (1) GB860563A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52102813A (en) * 1976-02-25 1977-08-29 Keisuke Murase Process for hardening of roll surface by treatment with electric discharge
FR2652591A1 (en) * 1989-10-03 1991-04-05 Framatome Sa PROCESS OF SURFACE OXIDATION OF A PASSIVABLE METAL PART, AND FUEL ASSEMBLY ELEMENTS COATED WITH A METAL ALLOY COATED WITH A PROTECTIVE OXIDE LAYER.
WO1992009716A1 (en) * 1990-11-26 1992-06-11 Siemens Power Corporation Wear resistant nuclear fuel assembly components
CN106756766A (en) * 2016-12-02 2017-05-31 哈尔滨东安发动机（集团）有限公司 A kind of method for nitridizing surfaces of zircaloy part

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52102813A (en) * 1976-02-25 1977-08-29 Keisuke Murase Process for hardening of roll surface by treatment with electric discharge
JPS5536249B2 (en) * 1976-02-25 1980-09-19
FR2652591A1 (en) * 1989-10-03 1991-04-05 Framatome Sa PROCESS OF SURFACE OXIDATION OF A PASSIVABLE METAL PART, AND FUEL ASSEMBLY ELEMENTS COATED WITH A METAL ALLOY COATED WITH A PROTECTIVE OXIDE LAYER.
EP0421868A1 (en) * 1989-10-03 1991-04-10 Framatome Superficial oxidation of a piece of passive metal and combustible assembling elements of a metallic alloy coated with a protective oxide
US5328524A (en) * 1989-10-03 1994-07-12 Framatome Process for the surface oxidation of a part composed of passivatable metal, and fuel assembly elements composed of metal alloy covered with a protective oxide layer
WO1992009716A1 (en) * 1990-11-26 1992-06-11 Siemens Power Corporation Wear resistant nuclear fuel assembly components
US5265137A (en) * 1990-11-26 1993-11-23 Siemens Power Corporation Wear resistant nuclear fuel assembly components
CN106756766A (en) * 2016-12-02 2017-05-31 哈尔滨东安发动机（集团）有限公司 A kind of method for nitridizing surfaces of zircaloy part

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