FR2303089A1 - Perforated turbine blades covered by porous metal felt - during surface coating by hot powder diffusion to prevent hole blockage - Google Patents

Perforated turbine blades covered by porous metal felt - during surface coating by hot powder diffusion to prevent hole blockage

Info

Publication number
FR2303089A1
FR2303089A1 FR7507238A FR7507238A FR2303089A1 FR 2303089 A1 FR2303089 A1 FR 2303089A1 FR 7507238 A FR7507238 A FR 7507238A FR 7507238 A FR7507238 A FR 7507238A FR 2303089 A1 FR2303089 A1 FR 2303089A1
Authority
FR
France
Prior art keywords
powder
turbine blades
perforated turbine
filters
diffused
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
FR7507238A
Other languages
French (fr)
Other versions
FR2303089B1 (en
Inventor
Philippe Galmiche
Andre Hivert
Andre Walder
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.)
Office National dEtudes et de Recherches Aerospatiales ONERA
Original Assignee
Office National dEtudes et de Recherches Aerospatiales ONERA
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 Office National dEtudes et de Recherches Aerospatiales ONERA filed Critical Office National dEtudes et de Recherches Aerospatiales ONERA
Priority to FR7507238A priority Critical patent/FR2303089A1/en
Priority to GB8369/76A priority patent/GB1545584A/en
Priority to DE2609016A priority patent/DE2609016C3/en
Priority to CA247,396A priority patent/CA1072405A/en
Priority to US05/664,392 priority patent/US4096296A/en
Publication of FR2303089A1 publication Critical patent/FR2303089A1/en
Application granted granted Critical
Publication of FR2303089B1 publication Critical patent/FR2303089B1/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
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/02—Pretreatment of the material to be coated

Abstract

Process to obtain diffused surface alloys on metal parts such as perforated turbine blades exposed to hot corrosive gases is claimed. The novelty is (1) mfr. of thin filters of refractory felt made of tubular metal fibres contg. 10-60%, pref. 25-50% Cr, oxidised to form 5% min. by wt. Cr2O3 on the fibres; (2) the metal parts are covered by the filters and subjected to hot powder diffusion in a halogen-H2 atmos., the powder contg. the metals to be diffused into the part plus at redn. agent consisting of Al, Y, Ti or lanthanides, and forming halide vapours reacting with the Cr2O3 to produce an inert and stable oxide film on the metals in the diffused coating. Used e.g. for powder coating perforated turbine blades, where the filters prevent the minute holes being blocked by the powder; and also prevent the powder sticking to the surface of the rotor or stator blades. The operating temp. of the blades is 1000-1300 degrees C.
FR7507238A 1975-03-07 1975-03-07 Perforated turbine blades covered by porous metal felt - during surface coating by hot powder diffusion to prevent hole blockage Granted FR2303089A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR7507238A FR2303089A1 (en) 1975-03-07 1975-03-07 Perforated turbine blades covered by porous metal felt - during surface coating by hot powder diffusion to prevent hole blockage
GB8369/76A GB1545584A (en) 1975-03-07 1976-03-02 Processes and systems for the formation of surface diffusion alloys on perforate metal workpieces
DE2609016A DE2609016C3 (en) 1975-03-07 1976-03-04 Method and device for the thermochemical formation of surface diffusion alloys on heat-resistant metallic workpieces
CA247,396A CA1072405A (en) 1975-03-07 1976-03-05 Methods of forming superficial diffusion alloys
US05/664,392 US4096296A (en) 1975-03-07 1976-03-05 Process for forming surface diffusion alloy layers on refractory metallic articles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7507238A FR2303089A1 (en) 1975-03-07 1975-03-07 Perforated turbine blades covered by porous metal felt - during surface coating by hot powder diffusion to prevent hole blockage

Publications (2)

Publication Number Publication Date
FR2303089A1 true FR2303089A1 (en) 1976-10-01
FR2303089B1 FR2303089B1 (en) 1979-03-16

Family

ID=9152281

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7507238A Granted FR2303089A1 (en) 1975-03-07 1975-03-07 Perforated turbine blades covered by porous metal felt - during surface coating by hot powder diffusion to prevent hole blockage

Country Status (1)

Country Link
FR (1) FR2303089A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2508063A1 (en) * 1981-06-18 1982-12-24 Snecma STEAM PROCESS FOR THE DEPOSITION OF A PROTECTIVE COATING ON A METAL PART, DEVICE FOR IMPLEMENTING SAME AND PARTS OBTAINED ACCORDING TO SAID METHOD
EP0818606A1 (en) * 1996-07-11 1998-01-14 Mtu Motoren- Und Turbinen-Union MàœNchen Gmbh Fluid flow machine blade with a metallic coating
CN112567064A (en) * 2018-08-07 2021-03-26 原子能和替代能源委员会 Coating for refractory alloy components

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2508063A1 (en) * 1981-06-18 1982-12-24 Snecma STEAM PROCESS FOR THE DEPOSITION OF A PROTECTIVE COATING ON A METAL PART, DEVICE FOR IMPLEMENTING SAME AND PARTS OBTAINED ACCORDING TO SAID METHOD
EP0068950A1 (en) * 1981-06-18 1983-01-05 Societe Nationale D'etude Et De Construction De Moteurs D'aviation, "S.N.E.C.M.A." Vapour phase process for depositing a protective coating on a metallic article, apparatus therefor and articles obtained by this process
EP0818606A1 (en) * 1996-07-11 1998-01-14 Mtu Motoren- Und Turbinen-Union MàœNchen Gmbh Fluid flow machine blade with a metallic coating
US5951254A (en) * 1996-07-11 1999-09-14 Mtu Motoren- Und Turbinen- Union Muenchen Gmbh Blade for fluid flow engine having a metallic coating layer, and method of manufacturing and repairing the same
CN112567064A (en) * 2018-08-07 2021-03-26 原子能和替代能源委员会 Coating for refractory alloy components
CN112567064B (en) * 2018-08-07 2023-06-20 原子能和替代能源委员会 Coating for refractory alloy components

Also Published As

Publication number Publication date
FR2303089B1 (en) 1979-03-16

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Legal Events

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