BR9403101A - Process to improve resistance against corrosion and wear of parts made of ferrous metal - Google Patents

Process to improve resistance against corrosion and wear of parts made of ferrous metal

Info

Publication number
BR9403101A
BR9403101A BR9403101A BR9403101A BR9403101A BR 9403101 A BR9403101 A BR 9403101A BR 9403101 A BR9403101 A BR 9403101A BR 9403101 A BR9403101 A BR 9403101A BR 9403101 A BR9403101 A BR 9403101A
Authority
BR
Brazil
Prior art keywords
salts
oxygenated
wear
resistance against
ferrous metal
Prior art date
Application number
BR9403101A
Other languages
Portuguese (pt)
Inventor
Jean Polti
Original Assignee
Stephanois Rech Mec
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 Stephanois Rech Mec filed Critical Stephanois Rech Mec
Publication of BR9403101A publication Critical patent/BR9403101A/en

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
    • C23C8/48—Nitriding
    • C23C8/50—Nitriding 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
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/70—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using melts
    • C23C22/72—Treatment of iron or alloys based thereon
    • 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
    • C23C8/80—After-treatment

Abstract

The process consists in immersing the articles which have previously undergone a thermochemical diffusion of either nitriding or sulphonitriding or carbonitriding type, in a bath of molten salts made up of alkali metal carbonates, nitrates, hydroxides and their oxygenated salts, the relative anionic weight quantities of carbonates, nitrates and hydroxides, expressed for sodium salts and corresponding to the active, that is to say liquid, phase of the bath being the following: 11 < CO<2-> < 23 19 < NO3<-> < 37 6 < OH<-> < 19 while the weight quantity of oxygenated salts of alkali metals, expressed as Cr2O7<2-> equivalent, is the following: 0.05 < oxygenated anions < 0.5. This process makes it possible to guarantee a high degree of reproducibility of the results, whatever the type of articles treated.
BR9403101A 1993-08-10 1994-07-29 Process to improve resistance against corrosion and wear of parts made of ferrous metal BR9403101A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9309814A FR2708941B1 (en) 1993-08-10 1993-08-10 Method for improving the resistance to wear and corrosion of ferrous metal parts.

Publications (1)

Publication Number Publication Date
BR9403101A true BR9403101A (en) 1995-04-11

Family

ID=9450082

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9403101A BR9403101A (en) 1993-08-10 1994-07-29 Process to improve resistance against corrosion and wear of parts made of ferrous metal

Country Status (13)

Country Link
EP (1) EP0638661B1 (en)
JP (1) JP3083453B2 (en)
KR (1) KR100273924B1 (en)
CN (1) CN1054891C (en)
AT (1) ATE148178T1 (en)
BR (1) BR9403101A (en)
CA (1) CA2129162C (en)
DE (1) DE69401551T2 (en)
ES (1) ES2097012T3 (en)
FR (1) FR2708941B1 (en)
MY (1) MY111901A (en)
PL (1) PL177228B1 (en)
TW (1) TW259815B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2731232B1 (en) * 1995-03-01 1997-05-16 Stephanois Rech PROCESS FOR TREATING FERROUS SURFACES SUBJECT TO HIGH FRICTION STRESS
JP4487340B2 (en) 1999-07-21 2010-06-23 日本精工株式会社 Method for manufacturing rolling bearing cage
TW557330B (en) 2000-11-29 2003-10-11 Parker Netsushori Kogyo Kk Improved salt bath nitrogenating method for corrosion-resistant iron material and iron units
DE10124933A1 (en) * 2001-05-21 2002-11-28 Endress & Hauser Gmbh & Co Kg Device used for process measurement and control technology comprises a lid made from a metallic material, and a metallic housing of a measuring apparatus
EP2757423B1 (en) * 2013-01-17 2018-07-11 Omega SA Part for clockwork
CN103451595B (en) * 2013-09-02 2015-09-23 中国科学院金属研究所 Mg alloy surface fused salt oxygen carbon sulphur oozes Preparing Anti-corrosion Ceramic Coating and Synthesis and applications altogether
CN113897579A (en) * 2021-09-30 2022-01-07 成都工具研究所有限公司 Low-temperature QPQ treatment process for 316L stainless steel workpiece

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2639244A (en) * 1950-07-15 1953-05-19 Remington Arms Co Inc Metal finishing method
DE2934113C2 (en) * 1979-08-23 1985-05-09 Degussa Ag, 6000 Frankfurt Process for increasing the corrosion resistance of nitrided components made of ferrous materials
FR2525637B1 (en) * 1982-04-23 1986-05-09 Stephanois Rech Mec PROCESS FOR TREATING FERROUS METAL PARTS IN OXIDIZING SALT BATTERS TO IMPROVE CORROSION RESISTANCE, PARTS CONTAINING SULFUR
JPH0234793A (en) * 1988-07-26 1990-02-05 Kobe Steel Ltd Production of high-strength hot-rolled steel sheet to be worked having excellent scale adhesion
FR2672059B1 (en) * 1991-01-30 1995-04-28 Stephanois Rech Mec PROCESS FOR PROVIDING FERROUS METAL PARTS, NITRIDATED THEN OXIDIZED, EXCELLENT CORROSION RESISTANCE WHILE MAINTAINING THE ACQUIRED FRICTION PROPERTIES.

Also Published As

Publication number Publication date
JP3083453B2 (en) 2000-09-04
CN1054891C (en) 2000-07-26
CA2129162C (en) 2000-12-12
DE69401551T2 (en) 1997-07-03
KR100273924B1 (en) 2000-12-15
JPH0776766A (en) 1995-03-20
CN1101684A (en) 1995-04-19
MY111901A (en) 2001-02-28
PL177228B1 (en) 1999-10-29
EP0638661B1 (en) 1997-01-22
KR950006020A (en) 1995-03-20
CA2129162A1 (en) 1995-02-11
TW259815B (en) 1995-10-11
PL304595A1 (en) 1995-02-20
ATE148178T1 (en) 1997-02-15
ES2097012T3 (en) 1997-03-16
FR2708941A1 (en) 1995-02-17
FR2708941B1 (en) 1995-10-27
DE69401551D1 (en) 1997-03-06
EP0638661A1 (en) 1995-02-15

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Legal Events

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FB36 Technical and formal requirements: requirement - article 36 of industrial property law
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B24E Patent annual fee: resolution cancelled

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B21A Patent or certificate of addition expired [chapter 21.1 patent gazette]

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