Effects of Al, Ti, and Zr doping on oxide film formation in Co-29Cr-6Mo alloy used as mould material for Al die-casting

Yunping Li; Phacharaphon Tunthawiroon; Ning Tang; Huakang Bian; Fenglin Wang; Shihai Sun; Yan Chen; Kazuyo Omura; Yuichiro Koizumi; Akihiko Chiba

doi:10.1016/j.corsci.2014.03.020

Effects of Al, Ti, and Zr doping on oxide film formation in Co-29Cr-6Mo alloy used as mould material for Al die-casting

Yunping Li, Phacharaphon Tunthawiroon, Ning Tang, Huakang Bian, Fenglin Wang, Shihai Sun, Yan Chen, Kazuyo Omura, Yuichiro Koizumi, Akihiko Chiba

New Industry Creation Hatchery Center (NICHe)

Tohoku University

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

17 Citations (Scopus)

Abstract

The reactive-element (RE) effect in chromia-forming-alloys on the adherence properties of the oxide scale is well known. A comparative study of chromia scale in four Co-Cr-Mo alloys, an undoped and three doped with 0.5. wt% Al/Ti/Zr, is conducted under FESEM/EPMA, LSM, and XPS. After air oxidation at 700. °C for 24. h, all doped alloys show a thinner, smoother oxide scale with enhanced adherence. The cross-sectional compositional maps show significant increase in the concentration of Ti in the oxide scale, and Al near the oxide/alloy interface. The reactive elements inhibited the diffusion of Cr and O ions, formed oxide preferentially, and eliminated the void formation at the oxide/alloy interface.

Original language	English
Pages (from-to)	147-158
Number of pages	12
Journal	Corrosion Science
Volume	84
DOIs	https://doi.org/10.1016/j.corsci.2014.03.020
Publication status	Published - 2014 Jul

Keywords

A. Cobalt
B. SEM
B. XPS
C. Interfaces
C. Oxidation

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10.1016/j.corsci.2014.03.020

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title = "Effects of Al, Ti, and Zr doping on oxide film formation in Co-29Cr-6Mo alloy used as mould material for Al die-casting",

abstract = "The reactive-element (RE) effect in chromia-forming-alloys on the adherence properties of the oxide scale is well known. A comparative study of chromia scale in four Co-Cr-Mo alloys, an undoped and three doped with 0.5. wt% Al/Ti/Zr, is conducted under FESEM/EPMA, LSM, and XPS. After air oxidation at 700. °C for 24. h, all doped alloys show a thinner, smoother oxide scale with enhanced adherence. The cross-sectional compositional maps show significant increase in the concentration of Ti in the oxide scale, and Al near the oxide/alloy interface. The reactive elements inhibited the diffusion of Cr and O ions, formed oxide preferentially, and eliminated the void formation at the oxide/alloy interface.",

keywords = "A. Cobalt, B. SEM, B. XPS, C. Interfaces, C. Oxidation",

author = "Yunping Li and Phacharaphon Tunthawiroon and Ning Tang and Huakang Bian and Fenglin Wang and Shihai Sun and Yan Chen and Kazuyo Omura and Yuichiro Koizumi and Akihiko Chiba",

note = "Funding Information: This research was supported by the Regional Innovation Cluster Program 2010 from the Ministry of Education, Culture, Sports, Science, and Technology of Japan .",

year = "2014",

month = jul,

doi = "10.1016/j.corsci.2014.03.020",

language = "English",

volume = "84",

pages = "147--158",

journal = "Corrosion Science",

issn = "0010-938X",

publisher = "Elsevier Ltd.",

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TY - JOUR

T1 - Effects of Al, Ti, and Zr doping on oxide film formation in Co-29Cr-6Mo alloy used as mould material for Al die-casting

AU - Li, Yunping

AU - Tunthawiroon, Phacharaphon

AU - Tang, Ning

AU - Bian, Huakang

AU - Wang, Fenglin

AU - Sun, Shihai

AU - Chen, Yan

AU - Omura, Kazuyo

AU - Koizumi, Yuichiro

AU - Chiba, Akihiko

N1 - Funding Information: This research was supported by the Regional Innovation Cluster Program 2010 from the Ministry of Education, Culture, Sports, Science, and Technology of Japan .

PY - 2014/7

Y1 - 2014/7

N2 - The reactive-element (RE) effect in chromia-forming-alloys on the adherence properties of the oxide scale is well known. A comparative study of chromia scale in four Co-Cr-Mo alloys, an undoped and three doped with 0.5. wt% Al/Ti/Zr, is conducted under FESEM/EPMA, LSM, and XPS. After air oxidation at 700. °C for 24. h, all doped alloys show a thinner, smoother oxide scale with enhanced adherence. The cross-sectional compositional maps show significant increase in the concentration of Ti in the oxide scale, and Al near the oxide/alloy interface. The reactive elements inhibited the diffusion of Cr and O ions, formed oxide preferentially, and eliminated the void formation at the oxide/alloy interface.

AB - The reactive-element (RE) effect in chromia-forming-alloys on the adherence properties of the oxide scale is well known. A comparative study of chromia scale in four Co-Cr-Mo alloys, an undoped and three doped with 0.5. wt% Al/Ti/Zr, is conducted under FESEM/EPMA, LSM, and XPS. After air oxidation at 700. °C for 24. h, all doped alloys show a thinner, smoother oxide scale with enhanced adherence. The cross-sectional compositional maps show significant increase in the concentration of Ti in the oxide scale, and Al near the oxide/alloy interface. The reactive elements inhibited the diffusion of Cr and O ions, formed oxide preferentially, and eliminated the void formation at the oxide/alloy interface.

KW - A. Cobalt

KW - B. SEM

KW - B. XPS

KW - C. Interfaces

KW - C. Oxidation

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U2 - 10.1016/j.corsci.2014.03.020

DO - 10.1016/j.corsci.2014.03.020

M3 - Article

AN - SCOPUS:84899412763

SN - 0010-938X

VL - 84

SP - 147

EP - 158

JO - Corrosion Science

JF - Corrosion Science

ER -

Effects of Al, Ti, and Zr doping on oxide film formation in Co-29Cr-6Mo alloy used as mould material for Al die-casting

Abstract

Keywords

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