Cubic γ-Al2O3 coating modified graphite powder

Yongfu Zhang; Aiming Bu; Yan Xiang; Yunjie Yang; Weiwei Chen; Huanwu Cheng; Lu Wang

doi:10.1016/j.vacuum.2020.109739

Cubic γ-Al₂O₃ coating modified graphite powder

Yongfu Zhang, Aiming Bu, Yan Xiang, Yunjie Yang, Weiwei Chen^*, Huanwu Cheng, Lu Wang

^*Corresponding author for this work

School of Material Science and Engineering

Beijing Institute of Technology

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

7 Citations (Scopus)

Abstract

Poor wettability and oxidation resistance have limited the application of graphite powder. A key to the problem is the surface modification. A ceramic coating was synthesized in this manuscript by the non-electrode plasma electrolysis technique for the purpose. The result showed that a cubic γ-Al₂O₃ coating was deposited on the graphite with a thickness of ~50 nm. The γ-Al₂O₃ coating significantly improved the oxidation resistance of the graphite powder and wettability, evidenced by ~80 °C the obvious increase of the initial oxidation temperature and ~50% improvement in wettability. We believe the technology will promote the development of powder surface modification technology and the application of the graphite powder.

Original language	English
Article number	109739
Journal	Vacuum
Volume	181
DOIs	https://doi.org/10.1016/j.vacuum.2020.109739
Publication status	Published - Nov 2020

Keywords

Cubic AlO coating
Graphite powder
Non-electrode plasma electrolysis technology
Oxidation resistance
Wettability

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10.1016/j.vacuum.2020.109739

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title = "Cubic γ-Al2O3 coating modified graphite powder",

abstract = "Poor wettability and oxidation resistance have limited the application of graphite powder. A key to the problem is the surface modification. A ceramic coating was synthesized in this manuscript by the non-electrode plasma electrolysis technique for the purpose. The result showed that a cubic γ-Al2O3 coating was deposited on the graphite with a thickness of ~50 nm. The γ-Al2O3 coating significantly improved the oxidation resistance of the graphite powder and wettability, evidenced by ~80 °C the obvious increase of the initial oxidation temperature and ~50% improvement in wettability. We believe the technology will promote the development of powder surface modification technology and the application of the graphite powder.",

keywords = "Cubic AlO coating, Graphite powder, Non-electrode plasma electrolysis technology, Oxidation resistance, Wettability",

author = "Yongfu Zhang and Aiming Bu and Yan Xiang and Yunjie Yang and Weiwei Chen and Huanwu Cheng and Lu Wang",

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year = "2020",

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doi = "10.1016/j.vacuum.2020.109739",

language = "English",

volume = "181",

journal = "Vacuum",

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TY - JOUR

T1 - Cubic γ-Al2O3 coating modified graphite powder

AU - Zhang, Yongfu

AU - Bu, Aiming

AU - Xiang, Yan

AU - Yang, Yunjie

AU - Chen, Weiwei

AU - Cheng, Huanwu

AU - Wang, Lu

PY - 2020/11

Y1 - 2020/11

N2 - Poor wettability and oxidation resistance have limited the application of graphite powder. A key to the problem is the surface modification. A ceramic coating was synthesized in this manuscript by the non-electrode plasma electrolysis technique for the purpose. The result showed that a cubic γ-Al2O3 coating was deposited on the graphite with a thickness of ~50 nm. The γ-Al2O3 coating significantly improved the oxidation resistance of the graphite powder and wettability, evidenced by ~80 °C the obvious increase of the initial oxidation temperature and ~50% improvement in wettability. We believe the technology will promote the development of powder surface modification technology and the application of the graphite powder.

AB - Poor wettability and oxidation resistance have limited the application of graphite powder. A key to the problem is the surface modification. A ceramic coating was synthesized in this manuscript by the non-electrode plasma electrolysis technique for the purpose. The result showed that a cubic γ-Al2O3 coating was deposited on the graphite with a thickness of ~50 nm. The γ-Al2O3 coating significantly improved the oxidation resistance of the graphite powder and wettability, evidenced by ~80 °C the obvious increase of the initial oxidation temperature and ~50% improvement in wettability. We believe the technology will promote the development of powder surface modification technology and the application of the graphite powder.

KW - Cubic AlO coating

KW - Graphite powder

KW - Non-electrode plasma electrolysis technology

KW - Oxidation resistance

KW - Wettability

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DO - 10.1016/j.vacuum.2020.109739

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SN - 0042-207X

VL - 181

JO - Vacuum

JF - Vacuum

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Cubic γ-Al₂O₃ coating modified graphite powder

Abstract

Keywords

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