Influence of Co(CH3COO)2 concentration on thermal emissivity of coatings formed on titanium alloy by micro-arc oxidation

Hui Tang; Qiu Sun; Tiezhu Xin; Chuangui Yi; Zhaohua Jiang; Fuping Wang

doi:10.1016/j.cap.2011.06.023

Influence of Co(CH₃COO)₂ concentration on thermal emissivity of coatings formed on titanium alloy by micro-arc oxidation

Hui Tang
, Qiu Sun
, Tiezhu Xin
, Chuangui Yi
, Zhaohua Jiang
, Fuping Wang^*

^*Corresponding author for this work

School of Chemistry and Chemical Engineering, Harbin Institute of Technology
Harbin Institute of Technology

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

50 Scopus citations

Abstract

Ceramic thermal protection coatings on Ti6Al4V alloy were achieved by micro-arc oxidation (MAO) in the presence of Co(CH₃COO)₂. The morphology, crystallographic structure and chemical composition of the coating were characterized by various techniques. The thermal emission of the coating was measured by Fourier transform spectrometer apparatus. The bonding strength between the coating and substrate was studied, together with the thermal shock resistance of the coating. The results indicate that the content of Co in the coating layer significantly affects its thermal emissivity. Higher concentration of Co(CH₃COO)₂ in electrolytes leads to more Co ions into the coating, which enhances the emissivity of the coating. All the coatings show bonding strength higher than 10 MPa. In addition, the coating remains stable over 40 cycles of thermal shocking. The coating formed at 4 g/L Co(CH₃COO)₂ displays an average spectral emissivity value more than 0.9 and bonding strength about 10.4 MPa.

Original language	English
Pages (from-to)	284-290
Number of pages	7
Journal	Current Applied Physics
Volume	12
Issue number	1
DOIs	https://doi.org/10.1016/j.cap.2011.06.023
State	Published - Jan 2012
Externally published	Yes

Keywords

Bonding strength
Micro-arc oxidation
Thermal emission
Thermal shock resistance
Titanium alloy

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10.1016/j.cap.2011.06.023

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title = "Influence of Co(CH3COO)2 concentration on thermal emissivity of coatings formed on titanium alloy by micro-arc oxidation",

abstract = "Ceramic thermal protection coatings on Ti6Al4V alloy were achieved by micro-arc oxidation (MAO) in the presence of Co(CH3COO)2. The morphology, crystallographic structure and chemical composition of the coating were characterized by various techniques. The thermal emission of the coating was measured by Fourier transform spectrometer apparatus. The bonding strength between the coating and substrate was studied, together with the thermal shock resistance of the coating. The results indicate that the content of Co in the coating layer significantly affects its thermal emissivity. Higher concentration of Co(CH3COO)2 in electrolytes leads to more Co ions into the coating, which enhances the emissivity of the coating. All the coatings show bonding strength higher than 10 MPa. In addition, the coating remains stable over 40 cycles of thermal shocking. The coating formed at 4 g/L Co(CH3COO)2 displays an average spectral emissivity value more than 0.9 and bonding strength about 10.4 MPa.",

keywords = "Bonding strength, Micro-arc oxidation, Thermal emission, Thermal shock resistance, Titanium alloy",

author = "Hui Tang and Qiu Sun and Tiezhu Xin and Chuangui Yi and Zhaohua Jiang and Fuping Wang",

year = "2012",

month = jan,

doi = "10.1016/j.cap.2011.06.023",

language = "英语",

volume = "12",

pages = "284--290",

journal = "Current Applied Physics",

issn = "1567-1739",

publisher = "Elsevier B.V.",

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}

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T1 - Influence of Co(CH3COO)2 concentration on thermal emissivity of coatings formed on titanium alloy by micro-arc oxidation

AU - Tang, Hui

AU - Sun, Qiu

AU - Xin, Tiezhu

AU - Yi, Chuangui

AU - Jiang, Zhaohua

AU - Wang, Fuping

PY - 2012/1

Y1 - 2012/1

N2 - Ceramic thermal protection coatings on Ti6Al4V alloy were achieved by micro-arc oxidation (MAO) in the presence of Co(CH3COO)2. The morphology, crystallographic structure and chemical composition of the coating were characterized by various techniques. The thermal emission of the coating was measured by Fourier transform spectrometer apparatus. The bonding strength between the coating and substrate was studied, together with the thermal shock resistance of the coating. The results indicate that the content of Co in the coating layer significantly affects its thermal emissivity. Higher concentration of Co(CH3COO)2 in electrolytes leads to more Co ions into the coating, which enhances the emissivity of the coating. All the coatings show bonding strength higher than 10 MPa. In addition, the coating remains stable over 40 cycles of thermal shocking. The coating formed at 4 g/L Co(CH3COO)2 displays an average spectral emissivity value more than 0.9 and bonding strength about 10.4 MPa.

AB - Ceramic thermal protection coatings on Ti6Al4V alloy were achieved by micro-arc oxidation (MAO) in the presence of Co(CH3COO)2. The morphology, crystallographic structure and chemical composition of the coating were characterized by various techniques. The thermal emission of the coating was measured by Fourier transform spectrometer apparatus. The bonding strength between the coating and substrate was studied, together with the thermal shock resistance of the coating. The results indicate that the content of Co in the coating layer significantly affects its thermal emissivity. Higher concentration of Co(CH3COO)2 in electrolytes leads to more Co ions into the coating, which enhances the emissivity of the coating. All the coatings show bonding strength higher than 10 MPa. In addition, the coating remains stable over 40 cycles of thermal shocking. The coating formed at 4 g/L Co(CH3COO)2 displays an average spectral emissivity value more than 0.9 and bonding strength about 10.4 MPa.

KW - Bonding strength

KW - Micro-arc oxidation

KW - Thermal emission

KW - Thermal shock resistance

KW - Titanium alloy

UR - https://www.scopus.com/pages/publications/80054810086

U2 - 10.1016/j.cap.2011.06.023

DO - 10.1016/j.cap.2011.06.023

M3 - 文章

AN - SCOPUS:80054810086

SN - 1567-1739

VL - 12

SP - 284

EP - 290

JO - Current Applied Physics

JF - Current Applied Physics

IS - 1

ER -

Influence of Co(CH₃COO)₂ concentration on thermal emissivity of coatings formed on titanium alloy by micro-arc oxidation

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Keywords

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