Synthesis and oxidation of nanocrystalline HfB2

Luyang Chen; Yunle Gu; Liang Shi; Zeheng Yang; Jianhua Ma; Yitai Qian

doi:10.1016/j.jallcom.2003.08.086

Synthesis and oxidation of nanocrystalline HfB₂

Luyang Chen, Yunle Gu, Liang Shi, Zeheng Yang, Jianhua Ma, Yitai Qian

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

50 Citations (Scopus)

Abstract

Nanocrystalline hafnium diboride (HfB₂) has been prepared by the reaction of HfCl₄ with NaBH₄ at 600°C in an autoclave. The X-ray powder diffraction (XRD) pattern can be indexed as hexagonal HfB₂ with the lattice constants of a=3.146 and c=3.456Å. The transmission electron microscopy (TEM) image shows a particle morphology with an average size of 25nm. The selected area electron diffraction (SAED) pattern confirms the presence of hexagonal HfB₂. The oxidation behavior of HfB₂ is studied by thermogravimetric analysis (TGA) and differential thermal analysis (DTA).

Original language	English
Pages (from-to)	353-356
Number of pages	4
Journal	Journal of Alloys and Compounds
Volume	368
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jallcom.2003.08.086
Publication status	Published - 2004 Apr 14

Keywords

Chemical synthesis
Intermetallics
X-ray diffraction

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/j.jallcom.2003.08.086

Cite this

@article{74ef394cbc934502bbfe56a6e734d38f,

title = "Synthesis and oxidation of nanocrystalline HfB2",

abstract = "Nanocrystalline hafnium diboride (HfB2) has been prepared by the reaction of HfCl4 with NaBH4 at 600°C in an autoclave. The X-ray powder diffraction (XRD) pattern can be indexed as hexagonal HfB2 with the lattice constants of a=3.146 and c=3.456{\AA}. The transmission electron microscopy (TEM) image shows a particle morphology with an average size of 25nm. The selected area electron diffraction (SAED) pattern confirms the presence of hexagonal HfB2. The oxidation behavior of HfB2 is studied by thermogravimetric analysis (TGA) and differential thermal analysis (DTA).",

keywords = "Chemical synthesis, Intermetallics, X-ray diffraction",

author = "Luyang Chen and Yunle Gu and Liang Shi and Zeheng Yang and Jianhua Ma and Yitai Qian",

note = "Funding Information: This work is supported by the Chinese National Science Research Foundation.",

year = "2004",

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day = "14",

doi = "10.1016/j.jallcom.2003.08.086",

language = "English",

volume = "368",

pages = "353--356",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier BV",

number = "1-2",

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TY - JOUR

T1 - Synthesis and oxidation of nanocrystalline HfB2

AU - Chen, Luyang

AU - Gu, Yunle

AU - Shi, Liang

AU - Yang, Zeheng

AU - Ma, Jianhua

AU - Qian, Yitai

N1 - Funding Information: This work is supported by the Chinese National Science Research Foundation.

PY - 2004/4/14

Y1 - 2004/4/14

N2 - Nanocrystalline hafnium diboride (HfB2) has been prepared by the reaction of HfCl4 with NaBH4 at 600°C in an autoclave. The X-ray powder diffraction (XRD) pattern can be indexed as hexagonal HfB2 with the lattice constants of a=3.146 and c=3.456Å. The transmission electron microscopy (TEM) image shows a particle morphology with an average size of 25nm. The selected area electron diffraction (SAED) pattern confirms the presence of hexagonal HfB2. The oxidation behavior of HfB2 is studied by thermogravimetric analysis (TGA) and differential thermal analysis (DTA).

AB - Nanocrystalline hafnium diboride (HfB2) has been prepared by the reaction of HfCl4 with NaBH4 at 600°C in an autoclave. The X-ray powder diffraction (XRD) pattern can be indexed as hexagonal HfB2 with the lattice constants of a=3.146 and c=3.456Å. The transmission electron microscopy (TEM) image shows a particle morphology with an average size of 25nm. The selected area electron diffraction (SAED) pattern confirms the presence of hexagonal HfB2. The oxidation behavior of HfB2 is studied by thermogravimetric analysis (TGA) and differential thermal analysis (DTA).

KW - Chemical synthesis

KW - Intermetallics

KW - X-ray diffraction

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JO - Journal of Alloys and Compounds

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