材料科学与工程学报2021，Vol.39Issue(4)：527-532,540,7.DOI:10.14136/j.cnki.issn1673-2812.2021.04.001
用TiO2、LiBH4和Mg低温制备TiB2纳米晶体
Low-temperature Synthesis of TiB2 Nanocrystals Using TiO2 ,LiBH4 and Mg
摘要
Abstract
TiB2 is an ultra-high temperature ceramic (UHTC ) material.It is usually synthesized at high temperatures through carbothermal or borothermal reactions,making it difficult to obtain nanosized crystals in a controllable way.In this work,we successfully synthesized and purified TiB2 nanocrystals of around 10-20 nm through a solid state reaction route using TiO2 ,LiBH4 and Mg.During the reaction, LiBH4 and Mg collaboratively reduced TiO2 and transformed it completely into TiB2 below 600 ℃.The growth of TiB2 nanocrystallites was fulfilled at a higher temperature of 800 ℃,resulting in TiB2 nanocrystals with a homogeneous size distribution.The present synthesis method ensured not only desirable nanosizes,but also well-crystallized structure for TiB2 nanoparticles in a facile and controllable way.关键词
纳米晶/二氧化钛/硼氢化锂/镁/低温反应Key words
Titanium diboride/Nanocrytals/Titanium oxide/Lithium borohydride/Magnesium分类
通用工业技术引用本文复制引用
沈野,刘宾虹,李洲鹏..用TiO2、LiBH4和Mg低温制备TiB2纳米晶体[J].材料科学与工程学报,2021,39(4):527-532,540,7.基金项目
This work is financially supported by Natural Science Foundation of Zhejiang Province under grant(LY17E010003),as well as by the National Natural Science Foundation of China under grant(21476200,21776245 and 21978261). （LY17E010003）
