Preliminary study on the growth mechanism of zircon whiskers prepared via non-hydrolytic sol-gel method combined with carbon black as reducing agent

被引：2

作者：

Feng, Guo ^{[1
]}

Jiang, Feng ^{[2
]}

Jian, Weihui ^{[1
,2
,3
]}

Liu, Jianmin ^{[1
,2
]}

Wang, Sanhai ^{[2
]}

Zhang, Quan ^{[1
]}

Miao, Lifeng ^{[1
]}

Wu, Qian ^{[1
]}

机构：

[1] Natl Engneering Res Ctr Domest & Bldg Ceram, Jingdezhen 333000, Peoples R China

[2] Jingdezhen Ceram Inst, Dept Mat Sci & Engn, Jingdezhen 333000, Peoples R China

[3] Jiangxi Key Lab Adv Mat, Jingdezhen 333000, Peoples R China

来源：

PROCESSING AND APPLICATION OF CERAMICS | 2018年 / 12卷 / 02期

基金：

中国国家自然科学基金;

关键词：

non-hydrolytic sol-gel process; whiskers; zircon; growth mechanism; SIC WHISKERS; ROOM-TEMPERATURE; ATMOSPHERE; REDUCTION; DEFECTS; ALUMINA;

D O I：

10.2298/PAC1802095F

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：

Zircon whiskers were prepared at 700 degrees C via non-hydrolytic sol-gel method combined with carbon black as reducing agent, Si(OC2H5)(4) (TEOS) and ZrCl4 as precursors and LiF as mineralizer. The whiskers were characterized and their growth mechanism was discussed. The results show that the introduction of carbon black is beneficial for the preferential axial growth of zircon crystals into whiskers. The diameter and aspect ratio of zircon whiskers are 30-40 nm and 6-15, respectively. The zircon whiskers grow along the [001] direction, which is c-axis oriented. The growth mechanism is revealed to be the screw dislocation mechanism with the mass transport mainly from the zircon crystal particle matrix.

引用

页码：95 / 99

页数：5

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