Preparation and high temperature oxidation resistance of microarc oxidation ceramic coatings formed on Ti                         2                         AlNb alloy

Yuan Hong Wang; Zhan Guo Liu; Jia Hu Ouyang; Ya Ming Wang; Yu Zhou

doi:10.1016/j.apsusc.2012.05.125

Preparation and high temperature oxidation resistance of microarc oxidation ceramic coatings formed on Ti ₂ AlNb alloy

Yuan Hong Wang
, Zhan Guo Liu
, Jia Hu Ouyang^*
, Ya Ming Wang
, Yu Zhou

^*Corresponding author for this work

Harbin Institute of Technology

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

41 Scopus citations

Abstract

Microarc oxidation (MAO) was used to produce oxide ceramic coatings on Ti ₂ AlNb alloy. The influences of NaOH and NaF additives in the electrolyte on microstructure and high-temperature oxidation resistance of MAO ceramic coatings were investigated. MAO ceramic coatings formed on Ti ₂ AlNb alloy exhibit a volcanic-like porous structure, and consist of Al ₂ TiO ₅ , R-TiO ₂ , γ-Al ₂ O ₃ and small amounts of α-Al ₂ O ₃ , Nb ₂ O ₅ . NaOH additive in the electrolyte enhances the densification of ceramic coatings and the relative content of Al ₂ TiO ₅ . NaF additive in the electrolyte not only increases the thickness of coatings, but also promotes the formation of Al ₂ TiO ₅ . In the case of static oxidation at 800°C for 100 h, MAO coatings improve high temperature oxidation resistance of Ti ₂ AlNb alloy. The oxidized products after thermal exposure to 800°C for 100 h in air exhibit a multiple-layered oxide structure, and are main composed of R-TiO ₂ , γ-Al ₂ O ₃ and Al ₂ TiO ₅ .

Original language	English
Pages (from-to)	8946-8952
Number of pages	7
Journal	Applied Surface Science
Volume	258
Issue number	22
DOIs	https://doi.org/10.1016/j.apsusc.2012.05.125
State	Published - 1 Sep 2012
Externally published	Yes

Keywords

High temperature oxidation
Microarc oxidation

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10.1016/j.apsusc.2012.05.125

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Wang, Y. H., Liu, Z. G., Ouyang, J. H., Wang, Y. M., & Zhou, Y. (2012). Preparation and high temperature oxidation resistance of microarc oxidation ceramic coatings formed on Ti ₂ AlNb alloy Applied Surface Science, 258(22), 8946-8952. https://doi.org/10.1016/j.apsusc.2012.05.125

@article{69ddeeea9de144caa7e5ff2c6fad4204,

title = " Preparation and high temperature oxidation resistance of microarc oxidation ceramic coatings formed on Ti 2 AlNb alloy ",

abstract = " Microarc oxidation (MAO) was used to produce oxide ceramic coatings on Ti 2 AlNb alloy. The influences of NaOH and NaF additives in the electrolyte on microstructure and high-temperature oxidation resistance of MAO ceramic coatings were investigated. MAO ceramic coatings formed on Ti 2 AlNb alloy exhibit a volcanic-like porous structure, and consist of Al 2 TiO 5 , R-TiO 2 , γ-Al 2 O 3 and small amounts of α-Al 2 O 3 , Nb 2 O 5 . NaOH additive in the electrolyte enhances the densification of ceramic coatings and the relative content of Al 2 TiO 5 . NaF additive in the electrolyte not only increases the thickness of coatings, but also promotes the formation of Al 2 TiO 5 . In the case of static oxidation at 800°C for 100 h, MAO coatings improve high temperature oxidation resistance of Ti 2 AlNb alloy. The oxidized products after thermal exposure to 800°C for 100 h in air exhibit a multiple-layered oxide structure, and are main composed of R-TiO 2 , γ-Al 2 O 3 and Al 2 TiO 5 .",

keywords = "High temperature oxidation, Microarc oxidation",

author = "Wang, \{Yuan Hong\} and Liu, \{Zhan Guo\} and Ouyang, \{Jia Hu\} and Wang, \{Ya Ming\} and Yu Zhou",

year = "2012",

month = sep,

day = "1",

doi = "10.1016/j.apsusc.2012.05.125",

language = "英语",

volume = "258",

pages = "8946--8952",

journal = "Applied Surface Science",

issn = "0169-4332",

publisher = "Elsevier B.V.",

number = "22",

}

Wang, YH, Liu, ZG , Ouyang, JH , Wang, YM & Zhou, Y 2012, ' Preparation and high temperature oxidation resistance of microarc oxidation ceramic coatings formed on Ti ₂ AlNb alloy ', Applied Surface Science, vol. 258, no. 22, pp. 8946-8952. https://doi.org/10.1016/j.apsusc.2012.05.125

Preparation and high temperature oxidation resistance of microarc oxidation ceramic coatings formed on Ti ₂ AlNb alloy . / Wang, Yuan Hong; Liu, Zhan Guo ; Ouyang, Jia Hu et al.
In: Applied Surface Science, Vol. 258, No. 22, 01.09.2012, p. 8946-8952.

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

TY - JOUR

T1 - Preparation and high temperature oxidation resistance of microarc oxidation ceramic coatings formed on Ti 2 AlNb alloy

AU - Wang, Yuan Hong

AU - Liu, Zhan Guo

AU - Ouyang, Jia Hu

AU - Wang, Ya Ming

AU - Zhou, Yu

PY - 2012/9/1

Y1 - 2012/9/1

N2 - Microarc oxidation (MAO) was used to produce oxide ceramic coatings on Ti 2 AlNb alloy. The influences of NaOH and NaF additives in the electrolyte on microstructure and high-temperature oxidation resistance of MAO ceramic coatings were investigated. MAO ceramic coatings formed on Ti 2 AlNb alloy exhibit a volcanic-like porous structure, and consist of Al 2 TiO 5 , R-TiO 2 , γ-Al 2 O 3 and small amounts of α-Al 2 O 3 , Nb 2 O 5 . NaOH additive in the electrolyte enhances the densification of ceramic coatings and the relative content of Al 2 TiO 5 . NaF additive in the electrolyte not only increases the thickness of coatings, but also promotes the formation of Al 2 TiO 5 . In the case of static oxidation at 800°C for 100 h, MAO coatings improve high temperature oxidation resistance of Ti 2 AlNb alloy. The oxidized products after thermal exposure to 800°C for 100 h in air exhibit a multiple-layered oxide structure, and are main composed of R-TiO 2 , γ-Al 2 O 3 and Al 2 TiO 5 .

AB - Microarc oxidation (MAO) was used to produce oxide ceramic coatings on Ti 2 AlNb alloy. The influences of NaOH and NaF additives in the electrolyte on microstructure and high-temperature oxidation resistance of MAO ceramic coatings were investigated. MAO ceramic coatings formed on Ti 2 AlNb alloy exhibit a volcanic-like porous structure, and consist of Al 2 TiO 5 , R-TiO 2 , γ-Al 2 O 3 and small amounts of α-Al 2 O 3 , Nb 2 O 5 . NaOH additive in the electrolyte enhances the densification of ceramic coatings and the relative content of Al 2 TiO 5 . NaF additive in the electrolyte not only increases the thickness of coatings, but also promotes the formation of Al 2 TiO 5 . In the case of static oxidation at 800°C for 100 h, MAO coatings improve high temperature oxidation resistance of Ti 2 AlNb alloy. The oxidized products after thermal exposure to 800°C for 100 h in air exhibit a multiple-layered oxide structure, and are main composed of R-TiO 2 , γ-Al 2 O 3 and Al 2 TiO 5 .

KW - High temperature oxidation

KW - Microarc oxidation

UR - https://www.scopus.com/pages/publications/84863528268

U2 - 10.1016/j.apsusc.2012.05.125

DO - 10.1016/j.apsusc.2012.05.125

M3 - 文章

AN - SCOPUS:84863528268

SN - 0169-4332

VL - 258

SP - 8946

EP - 8952

JO - Applied Surface Science

JF - Applied Surface Science

IS - 22

ER -

Preparation and high temperature oxidation resistance of microarc oxidation ceramic coatings formed on Ti ₂ AlNb alloy

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