Ultrathin high-temperature oxidation-resistant coatings of hexagonal boron nitride

被引：604

作者：

Liu, Zheng ^{[1
]}

Gong, Yongji ^{[2
]}

Zhou, Wu ^{[3
,4
]}

Ma, Lulu ^{[1
]}

Yu, Jingjiang ^{[5
]}

Idrobo, Juan Carlos ^{[4
]}

Jung, Jeil ^{[6
,7
,8
]}

MacDonald, Allan H. ^{[6
]}

Vajtai, Robert ^{[1
]}

Lou, Jun ^{[1
]}

Ajayan, Pulickel M. ^{[1
]}

机构：

[1] Rice Univ, Dept Mech Engn & Mat Sci, Houston, TX 77005 USA

[2] Rice Univ, Dept Chem, Houston, TX 77005 USA

[3] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA

[4] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA

[5] Agilent Technol, Nanotechnol Measurements Div, Chandler, AZ 85226 USA

[6] Univ Texas Austin, Dept Phys, Austin, TX 78212 USA

[7] Natl Univ Singapore, Graphene Res Ctr, Singapore 117551, Singapore

[8] Natl Univ Singapore, Dept Phys, Singapore 117551, Singapore

来源：

NATURE COMMUNICATIONS | 2013年 / 4卷

基金：

美国国家科学基金会;

关键词：

HIGH-QUALITY; BAND-GAP; GRAPHENE; LAYER;

D O I：

10.1038/ncomms3541

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Hexagonal boron nitride is a two-dimensional layered material that can be stable at 1,500 degrees C in air and will not react with most chemicals. Here we demonstrate large-scale, ultrathin, oxidation-resistant coatings of high-quality hexagonal boron nitride layers with controlled thicknesses from double layers to bulk. We show that such ultrathin hexagonal boron nitride films are impervious to oxygen diffusion even at high temperatures and can serve as high-performance oxidation-resistant coatings for nickel up to 1,100 degrees C in oxidizing atmospheres. Furthermore, graphene layers coated with a few hexagonal boron nitride layers are also protected at similarly high temperatures. These hexagonal boron nitride atomic layer coatings, which can be synthesized via scalable chemical vapour deposition method down to only two layers, could be the thinnest coating ever shown to withstand such extreme environments and find applications as chemically stable high-temperature coatings.

引用

页数：8

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