Kinetics and mechanism of isothermal oxidation of compositionally graded yttria stabilized zirconia (YSZ) based thermal barrier coating

Subhasisa Nath; Indranil  Manna; Jyotsna Dutta Majumdar

doi:10.1016/j.corsci.2014.06.050

Kinetics and mechanism of isothermal oxidation of compositionally graded yttria stabilized zirconia (YSZ) based thermal barrier coating

Subhasisa Nath, Indranil Manna, Jyotsna Dutta Majumdar

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Abstract

The present study concerns studying the isothermal oxidation behavior of compositionally graded thermal barrier coating (TBC) consisting of 100% CoNiCrAlY as bond coat developed by high velocity oxyfuel (HVOF) spraying on Inconel 718 substrate followed by several layers of CoNiCrAlY and YSZ in the weight ratios of 70:30, 50:50, 30:70, and 0:100 by plasma spraying. The kinetics of growth of the thermally grown oxide (TGO) layer developed due to oxidation of compositionally graded TBC was compared to the same grown during oxidation of conventional duplex TBC. The mechanism of oxidation was established. The residual stress developed on the surface before and after oxidation was studied in details.

Original language	English
Pages (from-to)	10-22
Number of pages	13
Journal	Corrosion Science
Volume	88
Early online date	11 Jul 2014
DOIs	https://doi.org/10.1016/j.corsci.2014.06.050
Publication status	Published - Nov 2014
Externally published	Yes

Keywords

A: Ceramic
A: Superalloys
B: XRD
B: SEM
C: Oxidation

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10.1016/j.corsci.2014.06.050

Kinetics and Mechanism of Isothermal Oxidation of Compositionally Graded Yttria Stabilized Zirconia (YSZ) based Thermal Barrier CoatingAccepted author manuscript, 4.19 MB

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title = "Kinetics and mechanism of isothermal oxidation of compositionally graded yttria stabilized zirconia (YSZ) based thermal barrier coating",

abstract = "The present study concerns studying the isothermal oxidation behavior of compositionally graded thermal barrier coating (TBC) consisting of 100% CoNiCrAlY as bond coat developed by high velocity oxyfuel (HVOF) spraying on Inconel 718 substrate followed by several layers of CoNiCrAlY and YSZ in the weight ratios of 70:30, 50:50, 30:70, and 0:100 by plasma spraying. The kinetics of growth of the thermally grown oxide (TGO) layer developed due to oxidation of compositionally graded TBC was compared to the same grown during oxidation of conventional duplex TBC. The mechanism of oxidation was established. The residual stress developed on the surface before and after oxidation was studied in details.",

keywords = "A: Ceramic, A: Superalloys, B: XRD, B: SEM, C: Oxidation",

author = "Subhasisa Nath and Indranil Manna and {Dutta Majumdar}, Jyotsna",

year = "2014",

month = nov,

doi = "10.1016/j.corsci.2014.06.050",

language = "English",

volume = "88",

pages = "10--22",

journal = "Corrosion Science",

issn = "0010-938X",

publisher = "Elsevier",

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TY - JOUR

T1 - Kinetics and mechanism of isothermal oxidation of compositionally graded yttria stabilized zirconia (YSZ) based thermal barrier coating

AU - Nath, Subhasisa

AU - Manna, Indranil

AU - Dutta Majumdar, Jyotsna

PY - 2014/11

Y1 - 2014/11

N2 - The present study concerns studying the isothermal oxidation behavior of compositionally graded thermal barrier coating (TBC) consisting of 100% CoNiCrAlY as bond coat developed by high velocity oxyfuel (HVOF) spraying on Inconel 718 substrate followed by several layers of CoNiCrAlY and YSZ in the weight ratios of 70:30, 50:50, 30:70, and 0:100 by plasma spraying. The kinetics of growth of the thermally grown oxide (TGO) layer developed due to oxidation of compositionally graded TBC was compared to the same grown during oxidation of conventional duplex TBC. The mechanism of oxidation was established. The residual stress developed on the surface before and after oxidation was studied in details.

AB - The present study concerns studying the isothermal oxidation behavior of compositionally graded thermal barrier coating (TBC) consisting of 100% CoNiCrAlY as bond coat developed by high velocity oxyfuel (HVOF) spraying on Inconel 718 substrate followed by several layers of CoNiCrAlY and YSZ in the weight ratios of 70:30, 50:50, 30:70, and 0:100 by plasma spraying. The kinetics of growth of the thermally grown oxide (TGO) layer developed due to oxidation of compositionally graded TBC was compared to the same grown during oxidation of conventional duplex TBC. The mechanism of oxidation was established. The residual stress developed on the surface before and after oxidation was studied in details.

KW - A: Ceramic

KW - A: Superalloys

KW - B: XRD

KW - B: SEM

KW - C: Oxidation

U2 - 10.1016/j.corsci.2014.06.050

DO - 10.1016/j.corsci.2014.06.050

M3 - Article

SN - 0010-938X

SN - 1879-0496

VL - 88

SP - 10

EP - 22

JO - Corrosion Science

JF - Corrosion Science

ER -

Kinetics and mechanism of isothermal oxidation of compositionally graded yttria stabilized zirconia (YSZ) based thermal barrier coating

Abstract

Keywords

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