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Title: Effect of bond-coat pre-aluminization and pre-oxidation duplex pretreatment on the performance of ZrO[sub 2]-8 wt. % Y[sub 2]O[sub 3]/Co-29Cr-6AI-1Y thermal barrier coatings

Abstract

A modification to the conventional thermal-barrier coating (TBC) system was made. In this study, the low-pressure, plasma-sprayed Co 29Cr 6Al 1Y bond coat received a duplex pretreatment of bond-coat pre-aluminizing and pre-oxidation prior to overlaying the air-plasma sprayed ZrO[sub 2] 8wt.% Y[sub 2]O[sub 3] top coat. The effects of this treatment on the properties of the TBC system were evaluated by thermal-cyclic test at 1050[degrees]C in air. The results of cyclic-oxidation tests showed that the proposed processes could remarkably improve the performance of ZrO[sub 2] 8wt.% Y[sub 2]O[sub 3]/Co-29Cr-6Al-1Y TBC. The improvement was attributed to a modification of bond-coat oxides and the associated reduction of the oxidation rate of the MCrAlY bond coat. 6 refs., 9 figs., 4 tabs.

Authors:
; ;  [1];  [2];  [3]
  1. Industrial Technology Research Inst., Hsinchu (Taiwan, Province of China)
  2. National Cheng Kung Univ., Tainan (Taiwan, Province of China)
  3. Aero Engine Factory/Aero Industry Development Center, Kang-Shan (Taiwan, Province of China)
Publication Date:
OSTI Identifier:
5561268
Resource Type:
Journal Article
Journal Name:
Oxidation of Metals; (United States)
Additional Journal Information:
Journal Volume: 40:3-4; Journal ID: ISSN 0030-770X
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 33 ADVANCED PROPULSION SYSTEMS; COBALT BASE ALLOYS; OXIDATION; COMBUSTORS; PROTECTIVE COATINGS; PERFORMANCE; PLASMA ARC SPRAYING; TURBINE BLADES; ALUMINIUM; ALUMINIUM ALLOYS; CERAMICS; CHROMIUM ALLOYS; DIFFUSION COATING; EXPERIMENTAL DATA; YTTRIUM ALLOYS; YTTRIUM OXIDES; ZIRCONIUM OXIDES; ALLOYS; CHALCOGENIDES; CHEMICAL REACTIONS; COATINGS; COBALT ALLOYS; DATA; DEPOSITION; ELEMENTS; INFORMATION; METALS; NUMERICAL DATA; OXIDES; OXYGEN COMPOUNDS; SPRAY COATING; SURFACE COATING; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS; ZIRCONIUM COMPOUNDS; 360105* - Metals & Alloys- Corrosion & Erosion; 400201 - Chemical & Physicochemical Properties; 360205 - Ceramics, Cermets, & Refractories- Corrosion & Erosion; 330100 - Internal Combustion Engines

Citation Formats

Lih, W, Wu, B C, Peng, A, Chang, E, and Chao, C H. Effect of bond-coat pre-aluminization and pre-oxidation duplex pretreatment on the performance of ZrO[sub 2]-8 wt. % Y[sub 2]O[sub 3]/Co-29Cr-6AI-1Y thermal barrier coatings. United States: N. p., 1993. Web. doi:10.1007/BF00664492.
Lih, W, Wu, B C, Peng, A, Chang, E, & Chao, C H. Effect of bond-coat pre-aluminization and pre-oxidation duplex pretreatment on the performance of ZrO[sub 2]-8 wt. % Y[sub 2]O[sub 3]/Co-29Cr-6AI-1Y thermal barrier coatings. United States. https://doi.org/10.1007/BF00664492
Lih, W, Wu, B C, Peng, A, Chang, E, and Chao, C H. 1993. "Effect of bond-coat pre-aluminization and pre-oxidation duplex pretreatment on the performance of ZrO[sub 2]-8 wt. % Y[sub 2]O[sub 3]/Co-29Cr-6AI-1Y thermal barrier coatings". United States. https://doi.org/10.1007/BF00664492.
@article{osti_5561268,
title = {Effect of bond-coat pre-aluminization and pre-oxidation duplex pretreatment on the performance of ZrO[sub 2]-8 wt. % Y[sub 2]O[sub 3]/Co-29Cr-6AI-1Y thermal barrier coatings},
author = {Lih, W and Wu, B C and Peng, A and Chang, E and Chao, C H},
abstractNote = {A modification to the conventional thermal-barrier coating (TBC) system was made. In this study, the low-pressure, plasma-sprayed Co 29Cr 6Al 1Y bond coat received a duplex pretreatment of bond-coat pre-aluminizing and pre-oxidation prior to overlaying the air-plasma sprayed ZrO[sub 2] 8wt.% Y[sub 2]O[sub 3] top coat. The effects of this treatment on the properties of the TBC system were evaluated by thermal-cyclic test at 1050[degrees]C in air. The results of cyclic-oxidation tests showed that the proposed processes could remarkably improve the performance of ZrO[sub 2] 8wt.% Y[sub 2]O[sub 3]/Co-29Cr-6Al-1Y TBC. The improvement was attributed to a modification of bond-coat oxides and the associated reduction of the oxidation rate of the MCrAlY bond coat. 6 refs., 9 figs., 4 tabs.},
doi = {10.1007/BF00664492},
url = {https://www.osti.gov/biblio/5561268}, journal = {Oxidation of Metals; (United States)},
issn = {0030-770X},
number = ,
volume = 40:3-4,
place = {United States},
year = {Fri Oct 01 00:00:00 EDT 1993},
month = {Fri Oct 01 00:00:00 EDT 1993}
}