In situ synthesis of porous ceramics with a framework structure of magnesium borate whiskers

被引：19

作者：

Chen, Shan-hua ^{[1
,2
]}

Zhang, Da-fu ^{[1
]}

Sun, Gang ^{[1
]}

机构：

[1] Chengdu Univ Technol, Coll Mat & Chem & Chem Engn, Chengdu 610059, Peoples R China

[2] Sichuan Higher Educ Inst, Mineral Resources Chem Key Lab, Chengdu 610059, Peoples R China

来源：

MATERIALS LETTERS | 2014年 / 121卷

关键词：

Ceramics; Crystal growth; Powder technology; Porous materials; Sintering; MG2B2O5; NANOWIRES; GROWTH-MECHANISM; COMPOSITES;

D O I：

10.1016/j.matlet.2014.01.064

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

New porous ceramics with a framework structure of magnesium borate (Mg2B2O5) whiskers with the diameter of 0.3-0.4 mu m and length of 2-5 mu m were synthesized in situ by use of [(MgCO3)(4).Mg(OH)(2)-5H(2)O] (BMC)-H3BO3 mixture at 900 degrees C. With the addition of Ni(NO3)(2), the diameter and length of Mg2B2O5 whiskers decreased to 0.2-0.3 mu m and increased to 4-8 mu m, respectively, while the strength of porous ceramics increased from 4.72 to 15.72 MPa. The formation mechanism of the Mg2B2O5 whiskers is considered to be the solution-liquid-solid (SLS) growth. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：206 / 208

页数：3

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