An investigation into the correlation between nano-impact resistance and erosion performance of EB-PVD thermal barrier coatings on thermal ageing

Jian Chen; Ben D. Beake; Richard G. Wellman; John R. Nicholls; Hanshan Dong

doi:10.1016/j.surfcoat.2012.06.011

An investigation into the correlation between nano-impact resistance and erosion performance of EB-PVD thermal barrier coatings on thermal ageing

Jian Chen^*, Ben D. Beake, Richard G. Wellman, John R. Nicholls, Hanshan Dong

^*Corresponding author for this work

Metallurgy and Materials

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

Nanomechanical testing (nano-impact and nanoindentation mapping) has been carried out on the top surfaces of as-received and aged 8wt.% yttria stabilised zirconia (YSZ) thermal barrier coatings (TBCs) produced by electron-beam physical vapour deposition (EB-PVD). The correlation between the nanomechanical test results and the previously reported erosion resistance of the TBCs has been investigated. The experimental results revealed that aged TBCs on zirconia for 24h at 1500°C or on alumina for 100h at 1100°C resulted in large increases in their hardness (H), modulus (E), H/E and H ³/E ² ratios but their erosion resistance was reduced. Nano-impact tests showed a dramatic decrease in impact resistance following the ageing of these TBCs, which is consistent with the erosion results. The strong correlation between the nano-impact and erosion resistances has confirmed the premise that rapid laboratory impact tests must produce deformation with similar contact footprint to that produced in the erosion tests.

Original language	English
Pages (from-to)	4992-4998
Number of pages	7
Journal	Surface and Coatings Technology
Volume	206
Issue number	23
DOIs	https://doi.org/10.1016/j.surfcoat.2012.06.011
Publication status	Published - 15 Jul 2012

Keywords

Erosion
Nano-impact
Nanoindentation
Thermal barrier coatings

ASJC Scopus subject areas

Chemistry(all)
Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/j.surfcoat.2012.06.011

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title = "An investigation into the correlation between nano-impact resistance and erosion performance of EB-PVD thermal barrier coatings on thermal ageing",

abstract = "Nanomechanical testing (nano-impact and nanoindentation mapping) has been carried out on the top surfaces of as-received and aged 8wt.% yttria stabilised zirconia (YSZ) thermal barrier coatings (TBCs) produced by electron-beam physical vapour deposition (EB-PVD). The correlation between the nanomechanical test results and the previously reported erosion resistance of the TBCs has been investigated. The experimental results revealed that aged TBCs on zirconia for 24h at 1500°C or on alumina for 100h at 1100°C resulted in large increases in their hardness (H), modulus (E), H/E and H 3/E 2 ratios but their erosion resistance was reduced. Nano-impact tests showed a dramatic decrease in impact resistance following the ageing of these TBCs, which is consistent with the erosion results. The strong correlation between the nano-impact and erosion resistances has confirmed the premise that rapid laboratory impact tests must produce deformation with similar contact footprint to that produced in the erosion tests.",

keywords = "Erosion, Nano-impact, Nanoindentation, Thermal barrier coatings",

author = "Jian Chen and Beake, {Ben D.} and Wellman, {Richard G.} and Nicholls, {John R.} and Hanshan Dong",

year = "2012",

month = jul,

day = "15",

doi = "10.1016/j.surfcoat.2012.06.011",

language = "English",

volume = "206",

pages = "4992--4998",

journal = "Surface and Coatings Technology",

issn = "0257-8972",

publisher = "Elsevier Korea",

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T1 - An investigation into the correlation between nano-impact resistance and erosion performance of EB-PVD thermal barrier coatings on thermal ageing

AU - Chen, Jian

AU - Beake, Ben D.

AU - Wellman, Richard G.

AU - Nicholls, John R.

AU - Dong, Hanshan

PY - 2012/7/15

Y1 - 2012/7/15

N2 - Nanomechanical testing (nano-impact and nanoindentation mapping) has been carried out on the top surfaces of as-received and aged 8wt.% yttria stabilised zirconia (YSZ) thermal barrier coatings (TBCs) produced by electron-beam physical vapour deposition (EB-PVD). The correlation between the nanomechanical test results and the previously reported erosion resistance of the TBCs has been investigated. The experimental results revealed that aged TBCs on zirconia for 24h at 1500°C or on alumina for 100h at 1100°C resulted in large increases in their hardness (H), modulus (E), H/E and H 3/E 2 ratios but their erosion resistance was reduced. Nano-impact tests showed a dramatic decrease in impact resistance following the ageing of these TBCs, which is consistent with the erosion results. The strong correlation between the nano-impact and erosion resistances has confirmed the premise that rapid laboratory impact tests must produce deformation with similar contact footprint to that produced in the erosion tests.

AB - Nanomechanical testing (nano-impact and nanoindentation mapping) has been carried out on the top surfaces of as-received and aged 8wt.% yttria stabilised zirconia (YSZ) thermal barrier coatings (TBCs) produced by electron-beam physical vapour deposition (EB-PVD). The correlation between the nanomechanical test results and the previously reported erosion resistance of the TBCs has been investigated. The experimental results revealed that aged TBCs on zirconia for 24h at 1500°C or on alumina for 100h at 1100°C resulted in large increases in their hardness (H), modulus (E), H/E and H 3/E 2 ratios but their erosion resistance was reduced. Nano-impact tests showed a dramatic decrease in impact resistance following the ageing of these TBCs, which is consistent with the erosion results. The strong correlation between the nano-impact and erosion resistances has confirmed the premise that rapid laboratory impact tests must produce deformation with similar contact footprint to that produced in the erosion tests.

KW - Erosion

KW - Nano-impact

KW - Nanoindentation

KW - Thermal barrier coatings

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U2 - 10.1016/j.surfcoat.2012.06.011

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M3 - Article

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SN - 0257-8972

VL - 206

SP - 4992

EP - 4998

JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

IS - 23

ER -

An investigation into the correlation between nano-impact resistance and erosion performance of EB-PVD thermal barrier coatings on thermal ageing

Abstract

Keywords

ASJC Scopus subject areas

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