GB1087184A - Method of surface hardening of a metal member - Google Patents

Method of surface hardening of a metal member

Info

Publication number
GB1087184A
GB1087184A GB2503665A GB2503665A GB1087184A GB 1087184 A GB1087184 A GB 1087184A GB 2503665 A GB2503665 A GB 2503665A GB 2503665 A GB2503665 A GB 2503665A GB 1087184 A GB1087184 A GB 1087184A
Authority
GB
United Kingdom
Prior art keywords
sheet
copper
bath
carburized
dots
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
GB2503665A
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB1087184A publication Critical patent/GB1087184A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/02Electroplating of selected surface areas
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C8/00Solid 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
    • C23C8/04Treatment of selected surface areas, e.g. using masks

Landscapes

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

Abstract

<PICT:1087184/C6-C7/1> The surface of a ductile metal e.g. steel member is hardened while retaining its ductility by depositing a mask on the surface of the member which protects a continuous area defining a plurality of unprotected areas, e.g. spots not more than 0.1 inch diameter, subjecting the member to surface hardening e.g. case-hardening such as carburizing, nitriding or carbonitriding and removing the mask so that the surface contains a plurality of hardened portions e.g. carburized dots 10 supported and separated by a continuous matrix of unhardened member 12a. For example, a cleaned carbon steel sheet may be first dipped in a photo-resist, a pattern of dots fixed on exposure to mono-chromatic light using an opaque negative pattern and then developed. After removing unexposed photo-resist, the sheet may be immersed in a copper cyanide plating bath until a copper plate 0.7 mil thick is electro-deposited. After removing the developed dots, the copper clad sheet may be immersed in a cyaniding bath consisting of NaCl, NaCN and BaCO3 at 1450 DEG F. until carburized to a depth of 0.002 inch. The copper may be then stripped from the sheet in a CrO3 bath. The negative pattern may be provided with square or other rectilinear holes to provide the carburized sheet with channels for surface lubricants (see Fig. 3 not shown). Instead of a cyanide bath, the copper clad sheet may be heated at 950-1050 DEG F. in an atmosphere consisting of 70% NH3 and 30% N2+H2 for nitriding.
GB2503665A 1964-06-30 1965-06-14 Method of surface hardening of a metal member Expired GB1087184A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US37913964A 1964-06-30 1964-06-30

Publications (1)

Publication Number Publication Date
GB1087184A true GB1087184A (en) 1967-10-11

Family

ID=23495976

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2503665A Expired GB1087184A (en) 1964-06-30 1965-06-14 Method of surface hardening of a metal member

Country Status (4)

Country Link
DE (1) DE1262731B (en)
GB (1) GB1087184A (en)
NL (1) NL6508150A (en)
SE (1) SE327878B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104094986A (en) * 2014-07-22 2014-10-15 哈斯食品设备有限责任公司 Baking plate

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3605781A1 (en) * 1986-02-22 1987-09-03 Kernforschungsz Karlsruhe USE OF A FILM OR PLATE-SHAPED FORM AS A BEARING MATERIAL FOR SLIDING BEARINGS
JPH02138554A (en) * 1988-11-16 1990-05-28 Nissan Motor Co Ltd Highly strenghtened gear

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104094986A (en) * 2014-07-22 2014-10-15 哈斯食品设备有限责任公司 Baking plate

Also Published As

Publication number Publication date
NL6508150A (en) 1965-12-31
SE327878B (en) 1970-08-31
DE1262731B (en) 1968-03-07

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