Synthesis of Mg(2)B(2)O(5) whiskers via coprecipitation and sintering process

Mg(2)B(2)O(5) whiskers with high aspect ratio were synthesized by coprecipitation and sintering process using MgCl(2) upsilon .6H(2)O, H(3)BO(3), and NaOH as raw materials and KCl as a flux. Their formation process was investigated by thermogravimetry and differential scanning calo-rimetry (TG-DSC),...

Full description

Saved in:
Bibliographic Details
Published in:International journal of minerals, metallurgy and materials metallurgy and materials, 2012-10, Vol.19 (10), p.969-972
Main Authors: Zhu, Dong-Hai, Nai, Xue-Ying, Zhu, Cheng-Cai, Guo, Feng-Qin, Bian, Shao-Ju, Li, Wu
Format: Article
Language:English
Subjects:
Coprecipitation
Crystal structure
Diffraction
Flux
Raw materials
Scanning
Sintering
Transmission electron microscopy
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Mg(2)B(2)O(5) whiskers with high aspect ratio were synthesized by coprecipitation and sintering process using MgCl(2) upsilon .6H(2)O, H(3)BO(3), and NaOH as raw materials and KCl as a flux. Their formation process was investigated by thermogravimetry and differential scanning calo-rimetry (TG-DSC), X-ray diffraction (XRD), and scanning electron microcopy (SEM). It is found that the products synthesized at 832 degree C are monoclinic Mg(2)B(2)O(5) whiskers with a diameter of 200-400 ran and a length of 50-80 urn. Transmission electron microscopy (TEM) and selected area electron diffraction (SAED) analyses show that the whiskers obtained at 832 degree C are single crystalline and grow along with the [010] direction. The growth mechanism of Mg(2)B(2)O(5) whiskers was also presented.
ISSN:1674-4799
DOI:10.1007/S12613-012-0656-5