In situ synthesis of homogeneously dispersed SiC nanowires in reaction sintered silicon-based ceramic powders

被引:36
作者
Chu, Yanhui [1 ]
Jing, Siyi [1 ]
Chen, Jikun [2 ]
机构
[1] South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510641, Guangdong, Peoples R China
[2] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China
关键词
In-situ synthesis; Nanowire; Silicon carbide; Ceramic powder; C/C COMPOSITES; CARBOTHERMAL REDUCTION; OXIDATION PROTECTION; GRAPHITE; GROWTH; CARBON; TEMPERATURE; FABRICATION; CATALYST; SIO2;
D O I
10.1016/j.ceramint.2018.01.080
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
The synthesis of homogeneously dispersed SiC nanowires in the ceramic powders arouses considerable interests due to its potential applications as reinforcements in the ceramic matrix composites. Herein, we reported a facile and novel approach to in situ synthesize homogeneously dispersed SiC nanowires in the reaction sintered silicon based ceramic powders. The as-synthesized nanowires exhibited the single-crystalline 3C-SiC with diameters of 50-200 nm and lengths ranging from tens to over 100 mu m. Combining further experimental results and thermodynamics analysis, we demonstrated the importance of the free silicon for the in situ synthesis of SiC nano wires in the reaction sintered silicon-based ceramic powders, since it increased the equilibrium vapor pressure of SiO gaseous product in the system.
引用
收藏
页码:6681 / 6685
页数:5
相关论文
共 20 条
[1]   Direct synthesis of β-silicon carbide nanowires from graphite only without a catalyst [J].
Al-Ruqeishi, Majid S. ;
Nor, Roslan Md ;
Amin, Yusoff Mohd ;
Al-Azri, Khalifa .
JOURNAL OF ALLOYS AND COMPOUNDS, 2010, 497 (1-2) :272-277
[2]   Adsorbed O2 on the Graphite-Induced Growth of Ultra-Long Single-Crystalline 6H-SiC Nanowires [J].
Chu, Yanhui ;
Li, Hejun ;
Luo, Huijuan ;
Li, Lu .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2014, 97 (08) :2379-2382
[3]   Oxidation protection of C/C composites by ultra long SiC nanowire-reinforced SiC-Si coating [J].
Chu, Yanhui ;
Li, Hejun ;
Li, Lu ;
Qi, Lehua .
CORROSION SCIENCE, 2014, 84 :204-208
[4]   Microstructure and mechanical properties of ultrafine bamboo-shaped SiC rod-reinforced HfC ceramic coating [J].
Chu, Yanhui ;
Li, Hejun ;
Wang, Yongjie ;
Qi, Lehua ;
Fu, Qiangang .
SURFACE & COATINGS TECHNOLOGY, 2013, 235 :577-581
[5]   Improvement of SiC-Si/MAS Interface in the Joints via In Situ Synthesizing SiC Nanowires [J].
Chu, Yanhui ;
Li, Hejun ;
Peng, Han ;
Qi, Lehua ;
Luo, Huijuan ;
Xu, Zhanwei .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2013, 96 (12) :3926-3932
[6]   Oxidation protection of C/C composites with a multilayer coating of SiC and Si plus SiC plus SiC nanowires [J].
Chu Yanhui ;
Li Hejun ;
Fu Qiangang ;
Wang Haipeng ;
Hou Xianghui ;
Zou Xu ;
Shang Gunan .
CARBON, 2012, 50 (03) :1280-1288
[7]   Influence of SiC nanowires on the properties of SiC coating for C/C composites between room temperature and 1500 °C [J].
Chu, Yanhui ;
Fu, Qiangang ;
Li, Hejun ;
Li, Kezhi ;
Zou, Xu ;
Gu, Caige .
CORROSION SCIENCE, 2011, 53 (09) :3048-3053
[8]   Microstructure and growth mechanism of SiC nanowires with periodically fluctuating hexagonal prisms by CVD [J].
Chu, Yanhui ;
Fu, Qiangang ;
Zhang, Zhengzhong ;
Li, Hejun ;
Li, Kezhi ;
Lei, Qin .
JOURNAL OF ALLOYS AND COMPOUNDS, 2010, 508 (02) :L36-L39
[9]   Synthesis and characterization of ultralong SiC nanowires with unique optical properties, excellent thermal stability and flexible nanomechanical properties [J].
Hu, Ping ;
Dong, Shun ;
Zhang, Xinghong ;
Gui, Kaixuan ;
Chen, Guiqing ;
Hu, Ze .
SCIENTIFIC REPORTS, 2017, 7
[10]   Thermodynamic analysis of the synthesis of silicon carbide nanofibers from exfoliated graphite and amorphous silica [J].
Jeong, Seong-Min ;
Seo, Won-Seon ;
Jung, In-Ho ;
Lee, Kyung-Jin ;
Hwang, Hae Jin .
CRYSTENGCOMM, 2014, 16 (12) :2348-2351