Oxidation behavior of a Ti16.7Zr16.7Hf16.7Cu16.7Ni16.7Be16.7 high-entropy bulk metallic glass

Mao Zhang; Pan Gong; Ning Li; Guangping Zheng; Lei Deng; Junsong Jin; Qiaomin Li; Xinyun Wang

doi:10.1016/j.matlet.2018.10.056

Oxidation behavior of a Ti_16.7Zr_16.7Hf_16.7Cu_16.7Ni_16.7Be_16.7 high-entropy bulk metallic glass

Mao Zhang, Pan Gong, Ning Li, Guangping Zheng, Lei Deng, Junsong Jin, Qiaomin Li, Xinyun Wang

Research output: Journal article publication › Journal article › Academic research › peer-review

10 Citations (Scopus)

Abstract

In this study, the oxidation behavior of a supercooled Ti_16.7Zr_16.7Hf_16.7Cu_16.7Ni_16.7Be_16.7 HE-BMG was investigated. The mass gain of specimens during oxidation is very limited, and the maximum value is lower than 0.08 × 10⁻² g/cm² after two hours of insulation. With the insulation duration prolonging, the mass gain decreases, indicating that the oxides formed are not stable and could decompose after long-term heating. Meanwhile, the oxidation kinetics doesn't follow the parabolic rate law, indicating that it is not a diffusion-controlled process. Even for specimens oxidized at 713 K for 120 min, they are still fully amorphous. No surface precipitates, as well as continuous oxide scale structures, are formed even after oxidation for 120 min at 753 K. Therefore, it is indicated that this HE-BMG has strong thermal stability and oxidation resistance, which is much promising for thermoplastic forming.

Original language	English
Pages (from-to)	135-138
Number of pages	4
Journal	Materials Letters
Volume	236
DOIs	https://doi.org/10.1016/j.matlet.2018.10.056
Publication status	Published - 1 Feb 2019

Keywords

Amorphous materials
Diffusion
High entropy
Mass gain
Oxidation
Thermal stability

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

More information

10.1016/j.matlet.2018.10.056

Cite this

@article{e808c4b317f744f5bdc1e8c6e3cb357c,

title = "Oxidation behavior of a Ti16.7Zr16.7Hf16.7Cu16.7Ni16.7Be16.7 high-entropy bulk metallic glass",

abstract = "In this study, the oxidation behavior of a supercooled Ti16.7Zr16.7Hf16.7Cu16.7Ni16.7Be16.7 HE-BMG was investigated. The mass gain of specimens during oxidation is very limited, and the maximum value is lower than 0.08 × 10−2 g/cm2 after two hours of insulation. With the insulation duration prolonging, the mass gain decreases, indicating that the oxides formed are not stable and could decompose after long-term heating. Meanwhile, the oxidation kinetics doesn't follow the parabolic rate law, indicating that it is not a diffusion-controlled process. Even for specimens oxidized at 713 K for 120 min, they are still fully amorphous. No surface precipitates, as well as continuous oxide scale structures, are formed even after oxidation for 120 min at 753 K. Therefore, it is indicated that this HE-BMG has strong thermal stability and oxidation resistance, which is much promising for thermoplastic forming.",

keywords = "Amorphous materials, Diffusion, High entropy, Mass gain, Oxidation, Thermal stability",

author = "Mao Zhang and Pan Gong and Ning Li and Guangping Zheng and Lei Deng and Junsong Jin and Qiaomin Li and Xinyun Wang",

year = "2019",

month = feb,

day = "1",

doi = "10.1016/j.matlet.2018.10.056",

language = "English",

volume = "236",

pages = "135--138",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Oxidation behavior of a Ti16.7Zr16.7Hf16.7Cu16.7Ni16.7Be16.7 high-entropy bulk metallic glass

AU - Zhang, Mao

AU - Gong, Pan

AU - Li, Ning

AU - Zheng, Guangping

AU - Deng, Lei

AU - Jin, Junsong

AU - Li, Qiaomin

AU - Wang, Xinyun

PY - 2019/2/1

Y1 - 2019/2/1

N2 - In this study, the oxidation behavior of a supercooled Ti16.7Zr16.7Hf16.7Cu16.7Ni16.7Be16.7 HE-BMG was investigated. The mass gain of specimens during oxidation is very limited, and the maximum value is lower than 0.08 × 10−2 g/cm2 after two hours of insulation. With the insulation duration prolonging, the mass gain decreases, indicating that the oxides formed are not stable and could decompose after long-term heating. Meanwhile, the oxidation kinetics doesn't follow the parabolic rate law, indicating that it is not a diffusion-controlled process. Even for specimens oxidized at 713 K for 120 min, they are still fully amorphous. No surface precipitates, as well as continuous oxide scale structures, are formed even after oxidation for 120 min at 753 K. Therefore, it is indicated that this HE-BMG has strong thermal stability and oxidation resistance, which is much promising for thermoplastic forming.

AB - In this study, the oxidation behavior of a supercooled Ti16.7Zr16.7Hf16.7Cu16.7Ni16.7Be16.7 HE-BMG was investigated. The mass gain of specimens during oxidation is very limited, and the maximum value is lower than 0.08 × 10−2 g/cm2 after two hours of insulation. With the insulation duration prolonging, the mass gain decreases, indicating that the oxides formed are not stable and could decompose after long-term heating. Meanwhile, the oxidation kinetics doesn't follow the parabolic rate law, indicating that it is not a diffusion-controlled process. Even for specimens oxidized at 713 K for 120 min, they are still fully amorphous. No surface precipitates, as well as continuous oxide scale structures, are formed even after oxidation for 120 min at 753 K. Therefore, it is indicated that this HE-BMG has strong thermal stability and oxidation resistance, which is much promising for thermoplastic forming.

KW - Amorphous materials

KW - Diffusion

KW - High entropy

KW - Mass gain

KW - Oxidation

KW - Thermal stability

UR - http://www.scopus.com/inward/record.url?scp=85055032840&partnerID=8YFLogxK

U2 - 10.1016/j.matlet.2018.10.056

DO - 10.1016/j.matlet.2018.10.056

M3 - Journal article

AN - SCOPUS:85055032840

SN - 0167-577X

VL - 236

SP - 135

EP - 138

JO - Materials Letters

JF - Materials Letters

ER -