Effects of thermal exposure on Ir-based alloys with and without Pt coating

Z. B. Bao; H. Murakami; Y. Yamabe-Mitarai

doi:10.1016/j.corsci.2010.09.068

Effects of thermal exposure on Ir-based alloys with and without Pt coating

Z. B. Bao^*, H. Murakami, Y. Yamabe-Mitarai

^*Corresponding author for this work

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

24 Citations (Scopus)

Abstract

Isothermal oxidation tests were performed on Ir, Ir-3Hf, Ir/Pt, and Ir-3Hf/Pt in static air at 1100°C for 200h. The microstructural evolution and changes in the composition of the alloys were characterisation by performing scanning electron microscopy (SEM) and field-emission electron probe microanalysis (FE-EPMA). The results indicated that the specimens of all the Ir-based alloys exhibited linear mass loss due to the formation/evaporation of gaseous Ir oxide species (mainly IrO₃). The oxidation behaviour, including mass change kinetics, evaporation of gaseous IrO₃, and the role of Hf and Pt are discussed.

Original language	English
Pages (from-to)	1224-1229
Number of pages	6
Journal	Corrosion Science
Volume	53
Issue number	4
DOIs	https://doi.org/10.1016/j.corsci.2010.09.068
Publication status	Published - 2011
Externally published	Yes

Keywords

A. Alloy
A. Platinum
B. EPMA
B. Weight loss
C. Oxidation

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Materials Science(all)

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10.1016/j.corsci.2010.09.068

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title = "Effects of thermal exposure on Ir-based alloys with and without Pt coating",

abstract = "Isothermal oxidation tests were performed on Ir, Ir-3Hf, Ir/Pt, and Ir-3Hf/Pt in static air at 1100°C for 200h. The microstructural evolution and changes in the composition of the alloys were characterisation by performing scanning electron microscopy (SEM) and field-emission electron probe microanalysis (FE-EPMA). The results indicated that the specimens of all the Ir-based alloys exhibited linear mass loss due to the formation/evaporation of gaseous Ir oxide species (mainly IrO3). The oxidation behaviour, including mass change kinetics, evaporation of gaseous IrO3, and the role of Hf and Pt are discussed.",

keywords = "A. Alloy, A. Platinum, B. EPMA, B. Weight loss, C. Oxidation",

author = "Bao, {Z. B.} and H. Murakami and Y. Yamabe-Mitarai",

year = "2011",

doi = "10.1016/j.corsci.2010.09.068",

language = "English",

volume = "53",

pages = "1224--1229",

journal = "Corrosion Science",

issn = "0010-938X",

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number = "4",

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TY - JOUR

T1 - Effects of thermal exposure on Ir-based alloys with and without Pt coating

AU - Bao, Z. B.

AU - Murakami, H.

AU - Yamabe-Mitarai, Y.

PY - 2011

Y1 - 2011

N2 - Isothermal oxidation tests were performed on Ir, Ir-3Hf, Ir/Pt, and Ir-3Hf/Pt in static air at 1100°C for 200h. The microstructural evolution and changes in the composition of the alloys were characterisation by performing scanning electron microscopy (SEM) and field-emission electron probe microanalysis (FE-EPMA). The results indicated that the specimens of all the Ir-based alloys exhibited linear mass loss due to the formation/evaporation of gaseous Ir oxide species (mainly IrO3). The oxidation behaviour, including mass change kinetics, evaporation of gaseous IrO3, and the role of Hf and Pt are discussed.

AB - Isothermal oxidation tests were performed on Ir, Ir-3Hf, Ir/Pt, and Ir-3Hf/Pt in static air at 1100°C for 200h. The microstructural evolution and changes in the composition of the alloys were characterisation by performing scanning electron microscopy (SEM) and field-emission electron probe microanalysis (FE-EPMA). The results indicated that the specimens of all the Ir-based alloys exhibited linear mass loss due to the formation/evaporation of gaseous Ir oxide species (mainly IrO3). The oxidation behaviour, including mass change kinetics, evaporation of gaseous IrO3, and the role of Hf and Pt are discussed.

KW - A. Alloy

KW - A. Platinum

KW - B. EPMA

KW - B. Weight loss

KW - C. Oxidation

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U2 - 10.1016/j.corsci.2010.09.068

DO - 10.1016/j.corsci.2010.09.068

M3 - Article

AN - SCOPUS:79951814594

SN - 0010-938X

VL - 53

SP - 1224

EP - 1229

JO - Corrosion Science

JF - Corrosion Science

IS - 4

ER -

Effects of thermal exposure on Ir-based alloys with and without Pt coating

Abstract

Keywords

ASJC Scopus subject areas

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