EP0048083B1 - Verfahren zur Oberflächenbehandlung einer hitzebeständigen Legierung - Google Patents

Verfahren zur Oberflächenbehandlung einer hitzebeständigen Legierung Download PDF

Info

Publication number
EP0048083B1
EP0048083B1 EP19810303264 EP81303264A EP0048083B1 EP 0048083 B1 EP0048083 B1 EP 0048083B1 EP 19810303264 EP19810303264 EP 19810303264 EP 81303264 A EP81303264 A EP 81303264A EP 0048083 B1 EP0048083 B1 EP 0048083B1
Authority
EP
European Patent Office
Prior art keywords
heat
alloy
resistant alloy
surface treatment
treatment method
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
EP19810303264
Other languages
English (en)
French (fr)
Other versions
EP0048083A1 (de
Inventor
Yoshio Takasago Technical Institute Harada
Masaharu Takasago Tech. Institute Nakamori
Keigo Takasago Technical Institute Saika
Ichiro Takasago Technical Institute Fukue
Shigefumi Takasago Tech. Institute Takaoka
Atsushi Takasago Techn. Institute Maekawa
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.)
OFFERTA DI LICENZA AL PUBBLICO
Original Assignee
Mitsubishi Heavy 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Publication of EP0048083A1 publication Critical patent/EP0048083A1/de
Application granted granted Critical
Publication of EP0048083B1 publication Critical patent/EP0048083B1/de
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
    • C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
    • 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
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
    • C23C10/30—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes using a layer of powder or paste on the surface

Definitions

  • This invention relates to a method of surface treatment of a member of heat-resistant alloy for use in turbines, blowers, boilers or the like to render it resistant to high temperature oxidation as well as to high temperature corrosion.
  • the present invention is directed to-providing a method which overcomes the deficiencies of these previous methods.
  • a method of applying a protective coating to a heat resistant alloy part of a kind having at least at its surface an inhomogeneous morphology which involves depositing a first coating of Ni with some Cr (namely 5-15% by weight Cr) for example, it is suggested, by plasma spraying to form a first layer, and then depositing a second coating for example, it is suggested, by slurry aluminising to form a second, aluminised, layer, and thereafter heat treating the part, whereby, it is said, the aluminised layer is caused to diffuse completely through the first layer and into the base material.
  • the present invention provides a surface treatment method of a heat-resistant alloy comprising the steps of plasma spraying a Ni-Cr alloy on to the surface of a member made of heat-resistant alloy, applying thereon a coating slurry containing aluminium particles and then heat treating the coated member for diffusion penetration which is characterised in that the Ni-Cr alloy comprises 50Ni-50Cr alloy and in that the coating slurry contains additionally Si0 2 particles.
  • the surface treatment method of the present invention provides the characterizing features as illustrated in Table 1 in comparison with some conventional methods.
  • a substrate of Udimet 520 (Registered Trade Mark) comprising by weight 19% Cr, 12% Co, 6% Mo, 3% Ti, 2% Al, 1% Fe, Ni-Bal, and widely used as a super-alloy for the hot parts of a gas turbine, was treated in the following sequence: -
  • step (4) could be carried out using a mixture of AI with Si0 2 in a mixing ratio by weight of 80/20 or 50/50.
  • step (6) could be carried out using a vacuum furnace in place of the hydrogen furnace.
  • Udimet 520 has been treated by the method of the invention by way of example, similar excellent results can also be obtained when treating the surfaces of other substrates such Ni-based alloy, Co-based alloy and stainless steel.
  • the coated surface of the substrate provided by the above described method had an extremely smooth and flat surface and AI and Si from the second layer sufficiently penetrated by diffusion into the first layer, thereby completely eliminating the fine pores of the first layer.
  • the composite coating was rendered wholly homogeneous.
  • AI since the melting point of AI is 660°C, AI was fused due to the heat-treatment and penetrated into the fine pores, thus presumably rendering the surface smooth and flat. Further, it was confirmed that a part of AI and Si reached and was diffused also into the substrate.
  • Table 2 illustrates the results of fly-ash errosion resistance test, corrosion resistance test, and practical application test using gas turbine blades, each test being applied to a member treated by a method in accordance with the present invention and a member treated-by a conventional method.
  • the composite coating produced by the method in accordance with the present invention had a better performance in comparison with that produced by the conventional method in the fly-ash errosion resistance test and the corrsion resistance test.
  • the coated blade produced using the method of the present invention exhibited the tendency that the deposition amount of the fuel ash become smaller.
  • the composite coating produced by the method of the present invention did not suffer peeling or cracking and had extremely good adhesion.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

Claims (4)

1. Verfahren zur Oberflächenbehandlung einer hitzebeständigen Legierung, umfassend die Schritte des Aufsprühens von Plasma aus einer Chrom-Nickel-Legierung auf die Fläche eines aus hitzebeständiger Legierung hergestellten Elementes, des Aufbringens einer Streichsuspension, die Aluminiumpartikel enthält sowie der anschließenden Wärmebehandlung des gestrichenen Elementes zwecks Diffusionspenetration, dadurch gekennzeichnet, daß die Chrom-Nickel-Legierung eine. 50%-Chrom-50%-Nickel-Legierung ist, und daß die Streichsuspension zusätzlich Si02-Partikel enthält.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die genannten Aluminium- und SiO2-Partikel eine Größe von etwa 0,1 pm bis 1,0 um aufweisen.
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Wärmebehandlung den Schritt des Haltens des gestrichenen Elementes auf etwa 1080 Grad C umfaßt.
4. Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß dem Verfahrensschritt der Wärmebehandlung der Verfahrensschritt einer Erwärmung vorgeschaltet ist, um die Flüssigkeit aus der Suspension zu verdampfen, gefolgt von einer Wärmebehandlung bei etwa 330 Grad C.
EP19810303264 1980-09-17 1981-07-16 Verfahren zur Oberflächenbehandlung einer hitzebeständigen Legierung Expired EP0048083B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP12873880A JPS5754282A (ja) 1980-09-17 1980-09-17 Tainetsugokinnohyomenshorihoho
JP128738/80 1980-09-17

Publications (2)

Publication Number Publication Date
EP0048083A1 EP0048083A1 (de) 1982-03-24
EP0048083B1 true EP0048083B1 (de) 1986-03-05

Family

ID=14992227

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810303264 Expired EP0048083B1 (de) 1980-09-17 1981-07-16 Verfahren zur Oberflächenbehandlung einer hitzebeständigen Legierung

Country Status (4)

Country Link
EP (1) EP0048083B1 (de)
JP (1) JPS5754282A (de)
CA (1) CA1173305A (de)
DE (1) DE3173970D1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58177458A (ja) * 1982-04-12 1983-10-18 Sumitomo Metal Ind Ltd ニツケル、クロム合金拡散浸透処理法
JPS63487A (ja) * 1986-06-19 1988-01-05 Tookaro Kk 含クロム溶射金属被覆層上に酸化皮膜を有する耐熱部材
US5789077A (en) 1994-06-27 1998-08-04 Ebara Corporation Method of forming carbide-base composite coatings, the composite coatings formed by that method, and members having thermally sprayed chromium carbide coatings
DE19824792B4 (de) * 1998-06-03 2005-06-30 Mtu Aero Engines Gmbh Verfahren zum Herstellen einer Haftschicht für eine Wärmedämmschicht
US6294261B1 (en) * 1999-10-01 2001-09-25 General Electric Company Method for smoothing the surface of a protective coating
US20060057418A1 (en) 2004-09-16 2006-03-16 Aeromet Technologies, Inc. Alluminide coatings containing silicon and yttrium for superalloys and method of forming such coatings
US9133718B2 (en) 2004-12-13 2015-09-15 Mt Coatings, Llc Turbine engine components with non-aluminide silicon-containing and chromium-containing protective coatings and methods of forming such non-aluminide protective coatings
EP1834009B1 (de) * 2004-12-13 2016-07-20 MT Coatings, LLC Metallteile mit siliziumhaltigen schutzschichten und verfahren zur bildung solcher schutzschichten
CN109868447B (zh) * 2017-12-01 2022-03-25 通用电气公司 用于降低表面粗糙度的方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3837894A (en) * 1972-05-22 1974-09-24 Union Carbide Corp Process for producing a corrosion resistant duplex coating
CA1004964A (en) * 1972-05-30 1977-02-08 Union Carbide Corporation Corrosion resistant coatings and process for making the same
JPS5635749B2 (de) * 1973-01-23 1981-08-19
US3989863A (en) * 1975-07-09 1976-11-02 The International Nickel Company, Inc. Slurry coating process
GB2009251B (en) * 1977-12-01 1982-08-18 Rolls Royce Coated metal part and the method of applying coating

Also Published As

Publication number Publication date
EP0048083A1 (de) 1982-03-24
CA1173305A (en) 1984-08-28
DE3173970D1 (en) 1986-04-10
JPS5754282A (ja) 1982-03-31
JPH0132309B2 (de) 1989-06-30

Similar Documents

Publication Publication Date Title
CA1222719A (en) Methods of forming a protective diffusion layer on nickel, cobalt and iron base alloys
US3873347A (en) Coating system for superalloys
US4101715A (en) High integrity CoCrAl(Y) coated nickel-base superalloys
JP3027005B2 (ja) 腐食した超合金または耐熱鋼製部材の再研磨方法および再研磨された部材
US5547770A (en) Multiplex aluminide-silicide coating
US4714624A (en) High temperature oxidation/corrosion resistant coatings
US4326011A (en) Hot corrosion resistant coatings
CA1213759A (en) High temperature metal coating compositions
US4024294A (en) Protective coatings for superalloys
KR20010078361A (ko) 금속 기판에 보호 피복물을 제공하는 방법 및 상기 방법에의해 제조된 제품
EP0048083B1 (de) Verfahren zur Oberflächenbehandlung einer hitzebeständigen Legierung
JP2002504628A (ja) 耐腐蝕及び酸化スラリ層の作成方法
US4371570A (en) Hot corrosion resistant coatings
EP0298309B1 (de) Metallische Beschichtung von verbesserter Lebensdauer
JP2934599B2 (ja) 高温耐食性複合表面処理方法
JPS5963303A (ja) 被覆超合金ガスタ−ビン部品
JPS6328983B2 (de)
USRE30995E (en) High integrity CoCrAl(Y) coated nickel-base superalloys
Khajavi et al. Aluminide coatings for nickel based superalloys
GB2152082A (en) Enhancement of superalloy resistance to environmental degradation
JPS61106763A (ja) 溶射合金粉末
JPS5811778A (ja) ＢとＡｌの複合コ−ティング法
KR940002691B1 (ko) 니켈기 초합금의 코팅방법
JPS58177458A (ja) ニツケル、クロム合金拡散浸透処理法
JPS5837144A (ja) 耐食性コ−テイング層を有する部材

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

AK Designated contracting states

Designated state(s): DE FR GB IT

17P Request for examination filed

Effective date: 19820920

ITF It: translation for a ep patent filed

Owner name: ING. ZINI MARANESI & C. S.R.L.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

REF Corresponds to:

Ref document number: 3173970

Country of ref document: DE

Date of ref document: 19860410

ET Fr: translation filed
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
REG Reference to a national code

Ref country code: GB

Ref legal event code: 746

ITPR It: changes in ownership of a european patent

Owner name: OFFERTA DI LICENZA AL PUBBLICO

REG Reference to a national code

Ref country code: FR

Ref legal event code: DL

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19980707

Year of fee payment: 18

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

Ref country code: FR

Payment date: 19980709

Year of fee payment: 18

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

Ref country code: DE

Payment date: 19980724

Year of fee payment: 18

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: 19990716

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

Ref country code: FR

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19990731

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

Effective date: 19990716

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 NON-PAYMENT OF DUE FEES

Effective date: 20000503

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST