Processing and oxidation behavior of Pt-diffused coatings

Liang Liang Wei; Hui Peng; Lei Zheng; Jing Yong Sun; Hong Bo Guo

doi:10.1007/s12598-017-0982-x

Processing and oxidation behavior of Pt-diffused coatings

Liang Liang Wei
, Hui Peng
, Lei Zheng
, Jing Yong Sun
, Hong Bo Guo^*

^*此作品的通讯作者

材料科学与工程学院

Beihang University

科研成果: 期刊稿件 › 文章 › 同行评审

5 引用（Scopus）

摘要

Pt-diffused coatings were synthesized on Ni10Al alloy by electroplating a thin layer of Pt (1–5 μm) followed by a diffusion treatment in vacuum at 1000–1100 °C. Effects of processing parameters (Pt thickness and vacuum diffusion temperature) on the microstructures and chemical composition of Pt-diffused coatings were investigated. Also, the oxidation behavior of the coatings was studied at 1100 °C. Pt film reveals nano-sized grain size of 93–113 nm. Vacuum diffusion treatment leads to the grain growth. 1-μm Pt film with 1000 °C/1 h vacuum diffusion fabricates nano-sized Pt-diffused coating which exhibits the best oxidation resistance. And a single continuous Al₂O₃ scale forms on the coating with low Al (~ 9 at%) and Pt (~ 6 at%) contents. Increasing initial Pt thickness would introduce more defects and cracks, leading to a duplex scale and decreasing the oxidation resistance of Pt-diffused coatings.

源语言	英语
页（从-至）	902-908
页数	7
期刊	Rare Metals
卷	39
期	8
DOI	https://doi.org/10.1007/s12598-017-0982-x
出版状态	已出版 - 1 8月 2020

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@article{fa43d7eba9534b7183989e0df8d0e279,

title = "Processing and oxidation behavior of Pt-diffused coatings",

abstract = "Pt-diffused coatings were synthesized on Ni10Al alloy by electroplating a thin layer of Pt (1–5 μm) followed by a diffusion treatment in vacuum at 1000–1100 °C. Effects of processing parameters (Pt thickness and vacuum diffusion temperature) on the microstructures and chemical composition of Pt-diffused coatings were investigated. Also, the oxidation behavior of the coatings was studied at 1100 °C. Pt film reveals nano-sized grain size of 93–113 nm. Vacuum diffusion treatment leads to the grain growth. 1-μm Pt film with 1000 °C/1 h vacuum diffusion fabricates nano-sized Pt-diffused coating which exhibits the best oxidation resistance. And a single continuous Al2O3 scale forms on the coating with low Al (\textasciitilde{} 9 at\%) and Pt (\textasciitilde{} 6 at\%) contents. Increasing initial Pt thickness would introduce more defects and cracks, leading to a duplex scale and decreasing the oxidation resistance of Pt-diffused coatings.",

keywords = "Electroplating, Nano-structure, Oxidation, Platinum-modified γ + γ′ coatings, Pt-diffused coatings",

author = "Wei, \{Liang Liang\} and Hui Peng and Lei Zheng and Sun, \{Jing Yong\} and Guo, \{Hong Bo\}",

note = "Publisher Copyright: {\textcopyright} 2018, The Nonferrous Metals Society of China and Springer-Verlag GmbH Germany, part of Springer Nature.",

year = "2020",

month = aug,

day = "1",

doi = "10.1007/s12598-017-0982-x",

language = "英语",

volume = "39",

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TY - JOUR

T1 - Processing and oxidation behavior of Pt-diffused coatings

AU - Wei, Liang Liang

AU - Peng, Hui

AU - Zheng, Lei

AU - Sun, Jing Yong

AU - Guo, Hong Bo

PY - 2020/8/1

Y1 - 2020/8/1

N2 - Pt-diffused coatings were synthesized on Ni10Al alloy by electroplating a thin layer of Pt (1–5 μm) followed by a diffusion treatment in vacuum at 1000–1100 °C. Effects of processing parameters (Pt thickness and vacuum diffusion temperature) on the microstructures and chemical composition of Pt-diffused coatings were investigated. Also, the oxidation behavior of the coatings was studied at 1100 °C. Pt film reveals nano-sized grain size of 93–113 nm. Vacuum diffusion treatment leads to the grain growth. 1-μm Pt film with 1000 °C/1 h vacuum diffusion fabricates nano-sized Pt-diffused coating which exhibits the best oxidation resistance. And a single continuous Al2O3 scale forms on the coating with low Al (~ 9 at%) and Pt (~ 6 at%) contents. Increasing initial Pt thickness would introduce more defects and cracks, leading to a duplex scale and decreasing the oxidation resistance of Pt-diffused coatings.

AB - Pt-diffused coatings were synthesized on Ni10Al alloy by electroplating a thin layer of Pt (1–5 μm) followed by a diffusion treatment in vacuum at 1000–1100 °C. Effects of processing parameters (Pt thickness and vacuum diffusion temperature) on the microstructures and chemical composition of Pt-diffused coatings were investigated. Also, the oxidation behavior of the coatings was studied at 1100 °C. Pt film reveals nano-sized grain size of 93–113 nm. Vacuum diffusion treatment leads to the grain growth. 1-μm Pt film with 1000 °C/1 h vacuum diffusion fabricates nano-sized Pt-diffused coating which exhibits the best oxidation resistance. And a single continuous Al2O3 scale forms on the coating with low Al (~ 9 at%) and Pt (~ 6 at%) contents. Increasing initial Pt thickness would introduce more defects and cracks, leading to a duplex scale and decreasing the oxidation resistance of Pt-diffused coatings.

KW - Electroplating

KW - Nano-structure

KW - Oxidation

KW - Platinum-modified γ + γ′ coatings

KW - Pt-diffused coatings

UR - https://www.scopus.com/pages/publications/85041190982

U2 - 10.1007/s12598-017-0982-x

DO - 10.1007/s12598-017-0982-x

M3 - 文章

AN - SCOPUS:85041190982

SN - 1001-0521

VL - 39

SP - 902

EP - 908

JO - Rare Metals

JF - Rare Metals

IS - 8

ER -

Processing and oxidation behavior of Pt-diffused coatings

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