A Facile Catalyst-free Synthesis of Hybrid with SiOx Spheroids Anchored Expanded Graphite

摘要：

　　A facile approach was developed to synthesize SiOx spheroids on expanded graphite (EG) by silicon vapor deposition.The fabrication of EG/SiOx hybrid was carried out at 11 00 ℃ and 1200 ℃ in an enclosed crucible which contained silicon powder on the bottom and EG upwards.The growth of SiOx spheroids is controlled by vapor-solid mechanism.Namely, the active carbon atoms absorbed SiO (g) and Si (g) to form SiC nuclei.Then, the SiO2, residual SiO (g) and Si (g) deposited on SiC nuclei to form SiOx spheroids.At 1300 ℃ and 1400 ℃, the same SiOx spheroids formed as well as ordinary and dumbbell-shaped β-SiC whiskers.

关键词： expanded graphite SiOx spheroid dumbbell-shaped SiC whiskers

作者: WANG Qinghu LI Yawei JIN Shengli SANG Shaobai WANG Guanghui

作者单位: The State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science & Technology,Wuh Chair of Ceramics,Montanuniversit(a)t Leoben,A-8700,Leoben,Austria Hubei Key Laboratory for Coal Conversion and New Carbon Materials,Wuhan University of Science & Tech

会议类型: 国际会议

会议名称: 第七届国际耐火材料学术会议(ISR2016)

会议地点: 西安

会议语种:英文

页码: 1-5

在线出版日期: 2016-09-20（万方平台首次上网日期，不代表论文的发表时间）