Densification of hBN with the as-coated SiO2 nanolayer by rotary chemical vapor deposition

被引：0

作者：

Zhang, Jianfeng ^{[1
]}

Zhang, Xin ^{[1
]}

Li, Gaiye ^{[1
]}

Wu, Yuping ^{[1
]}

Goto, Takashi ^{[2
]}

机构：

[1] Hohai Univ, Coll Mech & Mat, Nanjing 210098, Jiangsu, Peoples R China

[2] Tohoku Univ, Inst Mat, Aoba Ku, Sendai, Miyagi 9808577, Japan

来源：

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN | 2015年 / 123卷 / 1437期

基金：

中国国家自然科学基金;

关键词：

SiO2; nanolayer; Hexagonal boron nitride (hBN); Rotary chemical vapor deposition; Spark plasma sintering; HEXAGONAL BORON-NITRIDE; MECHANICAL-PROPERTIES; COMPOSITE CERAMICS; NI NANOPARTICLE; CBN POWDER; MULLITE; BN;

D O I：

10.2109/jcersj2.123.423

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

SiO2 nanolayer, less than 50nm in thickness, was coated on hexagonal boron nitride (hBN) plate powders by rotary chemical vapor deposition (RCVD) to assist densification of sinter-hard hBN. In RCVD process, tetraethylorthosilicate (TEOS) precursor heated at 110 degrees C was carried into a reactor by argon, and then reacted with oxygen to form SiO2 at 700 degrees C, with by-products of CO2 or H2O gases vacuumed out the reactor. Full expose of the surface of hBN powders to TEOS, argon and oxygen gases by RCVD technique and stable proceeding of decomposition reaction of TEOS contributed to the uniform distribution of SiO2 nanolayer. Viscous or liquid flow of uniform SiO2 nanolayer sintering aids assisted densification process of hBN and elevated its relative density to a maximum value of 96.2% at 1900 degrees C. (C) 2015 The Ceramic Society of Japan. All rights reserved.

引用

页码：423 / 427

页数：5

共 21 条

[1]

Bartsch M, 1999, J AM CERAM SOC, V82, P1388, DOI 10.1111/j.1151-2916.1999.tb01928.x

[2] Gas-phase production of gold-decorated silica nanoparticles [J].

Boies, Adam M. ;

Lei, Pingyan ;

Calder, Steven ;

Girshick, Steven L. .

NANOTECHNOLOGY, 2011, 22 (31)

[3] SiO2 coating of silver nanoparticles by photoinduced chemical vapor deposition [J].

Boies, Adam M. ;

Roberts, Jeffrey T. ;

Girshick, Steven L. ;

Zhang, Bin ;

Nakamura, Toshitaka ;

Mochizuki, Amane .

NANOTECHNOLOGY, 2009, 20 (29)

[4] EFFECTS OF AMORPHOUS SILICA COATINGS ON THE SINTERING BEHAVIORS OF SIC WHISKER-REINFORCED AL2O3 COMPOSITES [J].

CHEN, CC ;

YEN, FS .

JOURNAL OF MATERIALS SCIENCE, 1994, 29 (12) :3215-3220

[5] Effect of silica additive on combustion synthesis of hexagonal boron nitride with high pressure gaseous nitrogen [J].

Chen, GQ ;

He, XD ;

Han, JC ;

Wood, JV .

JOURNAL OF MATERIALS SCIENCE LETTERS, 2000, 19 (01) :81-83

[6] Mechanical properties and plasma erosion resistance of BNp/Al2O3-SiO2 composite ceramics [J].

Duan Xiao-ming ;

Jia De-chang ;

Zhou Yu ;

Yang Zhi-hua ;

Wang Yu-jin ;

Ren Feng-qin ;

Yu Da-ren ;

Ding Yong-jie .

JOURNAL OF CENTRAL SOUTH UNIVERSITY, 2013, 20 (06) :1462-1468

[7] Anisotropic mechanical properties and fracture mechanisms of textured h-BN composite ceramics [J].

Duan, Xiaoming ;

Wang, Meirong ;

Jia, Dechang ;

Jing, Nan ;

Wu, Zhiliang ;

Yang, Zhihua ;

Tian, Zhuo ;

Wang, Shengjin ;

He, Peigang ;

Wang, Yujin ;

Zhou, Yu .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2014, 607 :38-43

[8] Boron nitride (BN) and BN composites for high-temperature applications [J].

Eichler, Jens ;

Lesniak, Christoph .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2008, 28 (05) :1105-1109

[9] SINTERING AND CRYSTALLIZATION OF GROUND HEXAGONAL BORON-NITRIDE POWDERS [J].

HAGIO, T ;

YOSHIDA, H .

JOURNAL OF MATERIALS SCIENCE LETTERS, 1994, 13 (09) :653-655

[10] SINTERING OF THE MECHANOCHEMICALLY ACTIVATED POWDERS OF HEXAGONAL BORON-NITRIDE [J].

HAGIO, T ;

KOBAYASHI, K ;

YOSHIDA, H ;

YASUNAGA, H ;

NISHIKAWA, H .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1989, 72 (08) :1482-1484

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