Synthesis of (h-BN)/SiO2 core–shell powder for improved self-lubricating ceramic composites
作者： Hui Chen , Chonghai Xu , Guangchun Xiao , Zhaoqiang Chen , Jun Ma
DOI: 10.1016/J.CERAMINT.2015.12.102
关键词: Transmission electron microscopy 、 Coating 、 Materials science 、 Lamellar structure 、 Scanning electron microscope 、 Microstructure 、 Composite material 、 Composite number 、 Ammonium hydroxide 、 Ceramic
摘要: Abstract An easy and effective preparation method has been achieved for the fabrication of core-shell-structure (h-BN)/SiO 2 composite powders. Ammonium hydroxide (NH 4 OH) was used as a catalyst. Silica (SiO , ~50–100 nm) coated on surface lamellar hexagonal boron nitride (h-BN, ~5–10 μm) particles via hydrolysis condensation reaction tetraethylorthosilicate (TEOS). The resulting powders were characterized using XRD (X-ray diffraction), SEM (Scanning electron microscopy), EDS (Energy-dispersive X-ray spectroscopy) TEM (Transmission microscopy). A completely compact uniform SiO coating binds tightly to h-BN particles. In addition, effects temperature molar ratio H O NH OH between TEOS results are studied. processes reveal that nucleates grows first By adding instead solid-lubricant Al 3 /TiC, microstructure, fracture-toughness flexural strength noticeably improved.
sci-hub.se 参考文章(33)
C. Jeffrey Brinker, George W. Scherer, Sol-Gel Science: The Physics and Chemistry of Sol-Gel Processing ,(1990)
Yingying Song, Xuebo Cao, Yang Guo, Peng Chen, Qingrui Zhao, Guozhen Shen, Fabrication of Mesoporous CdTe/ZnO@SiO2 Core/Shell Nanostructures with Tunable Dual Emission and Ultrasensitive Fluorescence Response to Metal Ions Chemistry of Materials. ,vol. 21, pp. 68- 77 ,(2009) , 10.1021/CM801925J
Christina Graf, Dirk L. J. Vossen, Arnout Imhof, Alfons van Blaaderen, A General Method To Coat Colloidal Particles with Silica Langmuir. ,vol. 26, pp. 9297- 9303 ,(2003) , 10.1021/LA0347859
Xue Lei, Bing Yu, Hai-Lin Cong, Chao Tian, Yue-Zhong Wang, Qian-Bin Wang, Chuan-Kuo Liu, Synthesis of Monodisperse Silica Microspheres by a Modified Stöber Method Integrated Ferroelectrics. ,vol. 154, pp. 142- 146 ,(2014) , 10.1080/10584587.2014.904651
N. Liu, M. Shi, Y.D. Xu, X.Q. You, P.P. Ren, J.P. Feng, Effect of starting powders size on the Al2O3–TiC composites International Journal of Refractory Metals & Hard Materials. ,vol. 22, pp. 265- 269 ,(2004) , 10.1016/J.IJRMHM.2004.09.001
Paweł Rutkowski, Mechanical and thermal properties of hot pressed B4C-Cr3C2-hBN materials Journal of The European Ceramic Society. ,vol. 34, pp. 3413- 3419 ,(2014) , 10.1016/J.JEURCERAMSOC.2014.01.012
Xiuqing Li, Yimin Gao, Wu Pan, Xin Wang, Liancheng Song, Zhichao Zhong, Shanshan Wu, Fabrication and characterization of B4C-based ceramic composites with different mass fractions of hexagonal boron nitride Ceramics International. ,vol. 41, pp. 27- 36 ,(2015) , 10.1016/J.CERAMINT.2014.07.042
Chen Zishan, Li Hejun, Fu Qiangang, Qiang Xinfa, Tribological behaviors of SiC/h-BN composite coating at elevated temperatures Tribology International. ,vol. 56, pp. 58- 65 ,(2012) , 10.1016/J.TRIBOINT.2012.06.026
Yongzhen Yang, Jingjing Song, Yanxing Han, Xingmei Guo, Xuguang Liu, Bingshe Xu, Self assembly of SiO2-encapsulated carbon microsphere composites Applied Surface Science. ,vol. 257, pp. 7326- 7329 ,(2011) , 10.1016/J.APSUSC.2011.03.117
Katalin Sinkó, Influence of Chemical Conditions on the Nanoporous Structure of Silicate Aerogels Materials. ,vol. 3, pp. 704- 740 ,(2010) , 10.3390/MA3010704