EP0472957A1 - Procédé d'amélioration de la résistance à la corrosion d'objets en acier nitrocarburisé - Google Patents

Procédé d'amélioration de la résistance à la corrosion d'objets en acier nitrocarburisé Download PDF

Info

Publication number
EP0472957A1
EP0472957A1 EP91113185A EP91113185A EP0472957A1 EP 0472957 A1 EP0472957 A1 EP 0472957A1 EP 91113185 A EP91113185 A EP 91113185A EP 91113185 A EP91113185 A EP 91113185A EP 0472957 A1 EP0472957 A1 EP 0472957A1
Authority
EP
European Patent Office
Prior art keywords
und
components
corrosion resistance
die
wurden
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
EP91113185A
Other languages
German (de)
English (en)
Other versions
EP0472957B1 (fr
Inventor
Ulrich Dr. Christ
Georg Ing. Wahl
Helmut Dr. Kunst
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.)
Evonik Operations GmbH
Original Assignee
Degussa GmbH
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 Degussa GmbH filed Critical Degussa GmbH
Publication of EP0472957A1 publication Critical patent/EP0472957A1/fr
Application granted granted Critical
Publication of EP0472957B1 publication Critical patent/EP0472957B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C23C8/80—After-treatment

Definitions

  • the invention relates to a method for improving the corrosion resistance of nitrocarburized components made of ferrous materials which, after the nitrocarburization, are subjected to one or more oxidation treatments and, if appropriate, to mechanical processing, by coating them with a thin layer of an organic material.
  • the corrosion resistance of components made of ferrous materials that have been nitrocarburized and quenched from the nitrocarburizing temperature in water or in oil is significantly improved compared to the untreated condition. It is irrelevant whether the nitrocarburizing treatment was carried out in a salt bath, in gas or in plasma.
  • a further increase in the corrosion resistance can be achieved if an oxidation treatment is carried out after the nitrocarburizing. This can e.g. done by steam treatment in the temperature range 500 to 580 ° C.
  • the oxidation after nitrocarburizing can also be carried out in an oxidizing salt bath, as described for example in DE-PS 29 34 113.
  • nitrocarburization is carried out in a salt bath, the oxidation process will be started immediately, i.e. Transfer the components directly from the nitrocarburizing to the oxidizing salt bath without intermediate cooling. If, on the other hand, nitrocarburization is carried out in the gas or plasma, it must generally first be cooled to room temperature and the oxidation then effected by hanging it in the salt bath. Although this procedure also results in a considerable increase in corrosion resistance, it is less than in salt bath nitrocarburization with direct oxidizing agents in the salt bath without intermediate cooling.
  • a further increase in corrosion resistance is possible if, after the oxidation treatment, mechanical surface treatment (e.g. polishing, lapping, surface grinding) and repeated oxidation are carried out.
  • the corrosion resistance values achieved with this method of operation are comparable to or better than those of high-quality galvanic layers.
  • This object is achieved in that the pretreated components are immersed in a 1-40% solution of a hardenable synthetic resin in water and / or organic solvents and then heat treated at 80 to 200 C for 2 to 30 minutes.
  • a solution is preferably used which contains 5 to 25% by weight of a thermosetting synthetic resin.
  • a thermosetting synthetic resin In addition to epoxy resins, melamine resins, polyester resins and polyurethane resins, alkyd resins, acrylate resins and phenolic resins have proven to be the most suitable for this purpose.
  • the temperature and time of the heat treatment depends on the type of synthetic resin used.
  • the synthetic resins can be used in pure or modified form.
  • the solution is advantageously chosen so that a synthetic resin layer with a thickness of 0.2 to 5 ⁇ m is formed.
  • the aftertreatment of the pretreated components according to the invention surprisingly increases their corrosion resistance quite considerably. Values are achieved that go far beyond the pure protective effect of a thin synthetic resin layer.
  • the corrosion resistance in the salt spray test according to DIN 50021 is increased several times. Even after 3000 hours, several samples in the salt spray test show no corrosion attack (see table). The fatigue strength and wear resistance of the component are retained, the color is not changed.
  • the surface treatment also reduces the surface roughness. This is generally desirable, but it can also be undesirable in individual cases (changed sliding properties, oil adhesion).
  • suitable additives for the immersion bath for the aftertreatment the roughness depth can be changed within wide limits.
  • the additive comes e.g. colloidal silica in question.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)
  • Physical Vapour Deposition (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)
EP91113185A 1990-08-27 1991-08-06 Procédé d'amélioration de la résistance à la corrosion d'objets en acier nitrocarburisé Expired - Lifetime EP0472957B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4027011A DE4027011A1 (de) 1990-08-27 1990-08-27 Verfahren zur verbesserung der korrosionsbestaendigkeit nitrocarburierter bauteile aus eisenwerkstoffen
DE4027011 1990-08-27

Publications (2)

Publication Number Publication Date
EP0472957A1 true EP0472957A1 (fr) 1992-03-04
EP0472957B1 EP0472957B1 (fr) 1995-10-11

Family

ID=6412980

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91113185A Expired - Lifetime EP0472957B1 (fr) 1990-08-27 1991-08-06 Procédé d'amélioration de la résistance à la corrosion d'objets en acier nitrocarburisé

Country Status (9)

Country Link
US (1) US5288340A (fr)
EP (1) EP0472957B1 (fr)
JP (1) JPH04244261A (fr)
AT (1) ATE129024T1 (fr)
BR (1) BR9103660A (fr)
CA (1) CA2049829C (fr)
DE (2) DE4027011A1 (fr)
ES (1) ES2077741T3 (fr)
HK (1) HK31297A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006054280A1 (de) * 2006-11-17 2008-05-29 Durferrit Gmbh Verfahren und Vorrichtung zur Erhöhung der Korrosionsbeständigkeit nitrocarburierter oder nitrocarburierter und oxidierter Oberflächen von aus Stahl bestehenden Bauteilen
DE102007060085A1 (de) * 2007-12-13 2009-06-18 Durferrit Gmbh Verfahren zur Erzeugung von korrosionsbeständigen Oberflächen nitrierter oder nitrocarburierter Bauteile aus Stahl
FR2925524A1 (fr) * 2007-12-21 2009-06-26 Durferrit Gmbh Procede et dispositif pour augmenter la resistance a la corrosion de surfaces nitrocarburees et oxydees de pieces en acier

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6264317B1 (en) 1999-11-19 2001-07-24 Lexmark International, Inc. Corrosion resistant printhead body for ink jet pen
DE10126937C2 (de) * 2001-06-01 2003-11-27 Federal Mogul Burscheid Gmbh Gleitringdichtung mit einer Oxid-Nitrid-Verbundschicht
US7622197B2 (en) * 2006-11-20 2009-11-24 Ferroxy-Aled, Llc Seasoned ferrous cookware
DE102013226091A1 (de) 2013-12-16 2015-06-18 Robert Bosch Gmbh Zylindertrommel einer hydrostatischen Axialkolbenmaschine mit einer Verschleißschutzschicht
FR3030578B1 (fr) * 2014-12-23 2017-02-10 Hydromecanique & Frottement Procede de traitement superficiel d'une piece en acier par nitruration ou nitrocarburation, oxydation puis impregnation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0053521A2 (fr) * 1980-12-03 1982-06-09 LUCAS INDUSTRIES public limited company Pièces métalliques
EP0217421A2 (fr) * 1983-04-14 1987-04-08 LUCAS INDUSTRIES public limited company Pièces en acier résistant à la corrosion et leur procédé de fabrication
WO1987005335A1 (fr) * 1986-02-28 1987-09-11 Fox Patrick L Procede de trempe de surface et d'inhibition de la corrosion

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3876453A (en) * 1971-12-25 1975-04-08 Riken Light Metal Ind Co Method for painting aluminium or aluminium-based alloy material
DE2934113C2 (de) * 1979-08-23 1985-05-09 Degussa Ag, 6000 Frankfurt Verfahren zur Erhöhung der Korrosionsbeständigkeit nitrierter Bauteile aus Eisenwerkstoffen
DE3123763C1 (de) * 1981-06-16 1982-12-09 Th. Goldschmidt Ag, 4300 Essen Verfahren zum Aufbringen einer Grundierschicht auf Metalloberflächen
US4496401A (en) * 1981-10-15 1985-01-29 Lucas Industries Corrosion resistant steel components and method of manufacture thereof
US4748055A (en) * 1986-01-13 1988-05-31 Ashland Oil, Inc. Method for forming a self-healing corrosion preventative film
US5037491A (en) * 1986-02-28 1991-08-06 Fox Patrick L Shallow case hardening and corrosion inhibition process
US4950365A (en) * 1988-12-22 1990-08-21 Vac-Tec Systems, Inc. Corrosion free hard coated metal substrates
US5104742A (en) * 1989-05-10 1992-04-14 Ashland Oil, Inc. Water based coating for roughened metal surfaces

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0053521A2 (fr) * 1980-12-03 1982-06-09 LUCAS INDUSTRIES public limited company Pièces métalliques
EP0217421A2 (fr) * 1983-04-14 1987-04-08 LUCAS INDUSTRIES public limited company Pièces en acier résistant à la corrosion et leur procédé de fabrication
WO1987005335A1 (fr) * 1986-02-28 1987-09-11 Fox Patrick L Procede de trempe de surface et d'inhibition de la corrosion

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006054280A1 (de) * 2006-11-17 2008-05-29 Durferrit Gmbh Verfahren und Vorrichtung zur Erhöhung der Korrosionsbeständigkeit nitrocarburierter oder nitrocarburierter und oxidierter Oberflächen von aus Stahl bestehenden Bauteilen
DE102006054280B4 (de) * 2006-11-17 2011-01-05 Durferrit Gmbh Verfahren und Vorrichtung zur Erhöhung der Korrosionsbeständigkeit nitrocarburierter oder nitrocarburierter und oxidierter Oberflächen von aus Stahl bestehenden Bauteilen
DE102007060085A1 (de) * 2007-12-13 2009-06-18 Durferrit Gmbh Verfahren zur Erzeugung von korrosionsbeständigen Oberflächen nitrierter oder nitrocarburierter Bauteile aus Stahl
DE102007060085B4 (de) * 2007-12-13 2012-03-15 Durferrit Gmbh Verfahren zur Erzeugung von korrosionsbeständigen Oberflächen nitrierter oder nitrocarburierter Bauteile aus Stahl sowie nitrocarburierte oder nitrierte Bauteile aus Stahl mit oxidierten Oberflächen
FR2925524A1 (fr) * 2007-12-21 2009-06-26 Durferrit Gmbh Procede et dispositif pour augmenter la resistance a la corrosion de surfaces nitrocarburees et oxydees de pieces en acier

Also Published As

Publication number Publication date
DE59106662D1 (de) 1995-11-16
CA2049829A1 (fr) 1992-02-28
HK31297A (en) 1997-03-21
EP0472957B1 (fr) 1995-10-11
ES2077741T3 (es) 1995-12-01
US5288340A (en) 1994-02-22
BR9103660A (pt) 1992-05-19
CA2049829C (fr) 2001-01-16
JPH04244261A (ja) 1992-09-01
ATE129024T1 (de) 1995-10-15
DE4027011C2 (fr) 1992-10-29
DE4027011A1 (de) 1992-03-05

Similar Documents

Publication Publication Date Title
DE3004927C2 (fr)
DE2325138C3 (de) Verfahren zur Bildung von Schutzüberzügen auf Metallsubstraten
DE972727C (de) Verfahren zur Behandlung von Metalloberflaechen vor dem Aufbringen von UEberzuegen
DE2100021A1 (de) Verfahren zum Aufbringen von Phos phatschichten auf Stahl, Eisen und Zinkoberflachen
DE19706482B4 (de) Verfahren zur Oberflächenbehandlung eines Körpers aus Metall und nach dem Verfahren hergestellter Verbundstoff
DE4214954C2 (de) Verfahren zur Herstellung von verbesserten Chromatkonversionsschichten auf Zinkoberflächen und Anwendung des Verfahrens
EP0472957A1 (fr) Procédé d'amélioration de la résistance à la corrosion d'objets en acier nitrocarburisé
DE2232067A1 (de) Phosphatierungsloesungen
DE3244715A1 (de) Verfahren zur phosphatierung von metalloberflaechen sowie hierfuer geeignete badloesungen
DE809007C (de) Verfahren zur Behandlung von Oberflaechen von Kupfer und Kupferlegierungen
DE891171C (de) Verfahren zur Aufbringung von UEberzuegen auf Chrom und Legierungen des Chroms
EP0459549B1 (fr) Obtention de couches de conversion sur des surfaces en zinc ou en alliage de zinc
DE1771924A1 (de) Verfahren zum Aufbringen eines Phosphatueberzuges auf Stahl
DE1521657A1 (de) Loesungen zum Chromatieren von Zink und seinen Legierungen
EP0126498B1 (fr) Procédé pour la protection des métaux contre la corrosion
DE2443885C3 (de) Verfahren zur Oberflächenbehandlung von Eisenlegierungen durch galvanische Abscheidung einer Kupfer-Zinn-Legierung und anschließende thermische Diffusionsbehandlung
DE3429279C2 (fr)
DE2749476A1 (de) Verfahren zum beschichten von metallteilen
DE1034450B (de) Verfahren zum Vorbereiten von Metalloberflaechen fuer das Aufbringen von Emails
DE3222140C2 (de) Anwendung des Tauch-Verzinkungsverfahrens auf die Herstellung korrosionsgeschützter Aluminiumbauteile und korrosionsgeschütztes Aluminiumbauteil
DE2263038C3 (de) Verfahren zum Beschichten von Aluminiumoder Alminiumlegierungsmaterial
DE706347C (de) Verfahren zur Behandlung ungefaerbter UEberzuege aus sogenanntem Weissmessing
DE896892C (de) Verfahren zur Veredlung von Eisen und Stahl durch chemische Oberflaechenbehandlung und Lackierung
DE2154938C3 (de) Verfahren zur Oberflächenvorbehandlung von Stahl vor der Direktweißemaillierung
AT209133B (de) Mittel zur Nachbehandlung von phosphatierten Flächen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19910806

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT CH DE ES FR GB IT LI NL SE

17Q First examination report despatched

Effective date: 19920813

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE ES FR GB IT LI NL SE

REF Corresponds to:

Ref document number: 129024

Country of ref document: AT

Date of ref document: 19951015

Kind code of ref document: T

ITF It: translation for a ep patent filed

Owner name: JACOBACCI & PERANI S.P.A.

ET Fr: translation filed
REF Corresponds to:

Ref document number: 59106662

Country of ref document: DE

Date of ref document: 19951116

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2077741

Country of ref document: ES

Kind code of ref document: T3

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19960111

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19960723

Year of fee payment: 6

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980301

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19980301

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

REG Reference to a national code

Ref country code: CH

Ref legal event code: PUE

Owner name: DEGUSSA-HUELS AKTIENGESELLSCHAFT TRANSFER- HOUGHTO

Ref country code: CH

Ref legal event code: PFA

Free format text: DEGUSSA AKTIENGESELLSCHAFT TRANSFER- DEGUSSA-HUELS AKTIENGESELLSCHAFT

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20010713

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20010716

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20010802

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20010803

Year of fee payment: 11

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020806

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020807

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020807

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020831

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020831

REG Reference to a national code

Ref country code: FR

Ref legal event code: CD

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20020806

EUG Se: european patent has lapsed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20030912

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050806

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20100901

Year of fee payment: 20

Ref country code: AT

Payment date: 20100812

Year of fee payment: 20

Ref country code: DE

Payment date: 20100823

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59106662

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59106662

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20110807