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Experience with restoration of the EBPVD coatings in stationary power gas turbines

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Abstract

The use of electron beam physical vapour deposition (EBPVD) technology for CoCrAlY protective metal coatings improved the resource of power gas turbine blades in 2-4 times. Alter 7000 h operation the pitting corrosive attack is observed by the mechanism of hot low-temperature corrosion. The technology Removing and redeposition for coating layer has been developed. Blades with redeposited layer after the specified reductive heat treatment have operating time over 3000 h. Coatings on blades are in good states. (orig.) 7 refs.
Authors:
Osyka, A S; [1]  Rybnikov, A I; [2]  Malashenko, I S; [3]  Leontiev, S A [4] 
  1. State Area Power Station N 3 of Mosenergo, Electrogorsk (Russian Federation)
  2. Polzunov Central Boiler and Turbine Institute - NPO TsKTI, St. Petersburg (Russian Federation)
  3. E. 0. Paton Electric Welding Institute, Kiev (Ukraine)
  4. Leningradsky Metallithesky Zavod, St. Petersburg (Russian Federation)
Publication Date:
Dec 31, 1998
Product Type:
Conference
Report Number:
VTT-SYMP-184(v.1); CONF-980999-
Reference Number:
SCA: 360100; 330103; PA: FI-99:003046; EDB-99:036112; SN: 99002064660
Resource Relation:
Conference: 4. Baltica seminar on plant maintenance for managing life and performance, Helsinki (Finland), 7-9 Sep 1998; Other Information: PBD: 1998; Related Information: Is Part Of BALTICA IV. Plant maintenance for managing life and performance; Hietanen, S.; Auerkari, P. [eds.] [VTT Manufacturing Technology, Espoo (Finland). Operational Reliability]; PB: 332 p.
Subject:
36 MATERIALS SCIENCE; 33 ADVANCED PROPULSION SYSTEMS; GAS TURBINES; TURBINE BLADES; CORROSION PROTECTION; ENERGY BEAM DEPOSITION; PROTECTIVE COATINGS; COBALT BASE ALLOYS; CERAMICS; TEMPERATURE RANGE 1000-4000 K; GAS TURBINE POWER PLANTS; REPAIR; MECHANICAL PROPERTIES; MICROSTRUCTURE; PHASE DIAGRAMS
OSTI ID:
324954
Research Organizations:
Technical Research Centre of Finland, Espoo (Finland)
Country of Origin:
Finland
Language:
English
Other Identifying Numbers:
Other: ON: DE99730862; ISBN 951-38-4577-X; TRN: FI9903046
Availability:
OSTI as DE99730862
Submitting Site:
FI
Size:
pp. 119-130
Announcement Date:
Apr 05, 1999

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Citation Formats

Osyka, A S, Rybnikov, A I, Malashenko, I S, and Leontiev, S A. Experience with restoration of the EBPVD coatings in stationary power gas turbines. Finland: N. p., 1998. Web.
Osyka, A S, Rybnikov, A I, Malashenko, I S, & Leontiev, S A. Experience with restoration of the EBPVD coatings in stationary power gas turbines. Finland.
Osyka, A S, Rybnikov, A I, Malashenko, I S, and Leontiev, S A. 1998. "Experience with restoration of the EBPVD coatings in stationary power gas turbines." Finland.
@misc{etde_324954,
title = {Experience with restoration of the EBPVD coatings in stationary power gas turbines}
 author = {Osyka, A S, Rybnikov, A I, Malashenko, I S, and Leontiev, S A}
 abstractNote = {The use of electron beam physical vapour deposition (EBPVD) technology for CoCrAlY protective metal coatings improved the resource of power gas turbine blades in 2-4 times. Alter 7000 h operation the pitting corrosive attack is observed by the mechanism of hot low-temperature corrosion. The technology Removing and redeposition for coating layer has been developed. Blades with redeposited layer after the specified reductive heat treatment have operating time over 3000 h. Coatings on blades are in good states. (orig.) 7 refs.}
 place = {Finland}
 year = {1998}
 month = {Dec}
 }