FR2145659A1 - Surface hardening hard metal workpieces - using a boron carbide and borax mixt - Google Patents

Surface hardening hard metal workpieces - using a boron carbide and borax mixt

Info

Publication number
FR2145659A1
FR2145659A1 FR7225400A FR7225400A FR2145659A1 FR 2145659 A1 FR2145659 A1 FR 2145659A1 FR 7225400 A FR7225400 A FR 7225400A FR 7225400 A FR7225400 A FR 7225400A FR 2145659 A1 FR2145659 A1 FR 2145659A1
Authority
FR
France
Prior art keywords
mixt
borax
hard metal
boron carbide
surface hardening
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.)
Granted
Application number
FR7225400A
Other languages
French (fr)
Other versions
FR2145659B3 (en
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.)
Battelle Memorial Institute Inc
Original Assignee
Battelle Memorial Institute Inc
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 Battelle Memorial Institute Inc filed Critical Battelle Memorial Institute Inc
Publication of FR2145659A1 publication Critical patent/FR2145659A1/en
Application granted granted Critical
Publication of FR2145659B3 publication Critical patent/FR2145659B3/fr
Granted 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
    • C23C8/40—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 liquids, e.g. salt baths, liquid suspensions
    • C23C8/42—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 liquids, e.g. salt baths, liquid suspensions only one element being applied
    • 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
    • C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
    • C23C30/005—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process on hard metal substrates

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

Process for treating the surface (I) of a hard metal e.g. W or Ti or Ta carbide workpiece to increase its surface hardness comprising contacting (I) with a B4C and borax mixt at >= fusion temp. pref. 1000 degrees C for long enough, pref. 3 hrs. to produce a hardened layer on (I).
FR7225400A 1971-07-15 1972-07-13 Surface hardening hard metal workpieces - using a boron carbide and borax mixt Granted FR2145659A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1047071A CH540347A (en) 1971-07-15 1971-07-15 Process for treating the surface of a hard metal part to increase its surface hardness

Publications (2)

Publication Number Publication Date
FR2145659A1 true FR2145659A1 (en) 1973-02-23
FR2145659B3 FR2145659B3 (en) 1975-09-05

Family

ID=4363577

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7225400A Granted FR2145659A1 (en) 1971-07-15 1972-07-13 Surface hardening hard metal workpieces - using a boron carbide and borax mixt

Country Status (2)

Country Link
CH (1) CH540347A (en)
FR (1) FR2145659A1 (en)

Also Published As

Publication number Publication date
FR2145659B3 (en) 1975-09-05
CH540347A (en) 1973-08-15

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Legal Events

Date Code Title Description
ST Notification of lapse