Combustion synthesis of zinc ferrite powders in oxygen

被引：12

作者：

Li, Y ^{[1
]}

Zhao, JP

Qiang, LS

Jiang, JX

机构：

[1] Harbin Inst Technol, Ctr Composite Mat, Harbin 150001, Peoples R China

[2] Harbin Inst Technol, Dept Appl Chem, Harbin 150001, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2004年 / 373卷 / 1-2期

关键词：

ZnFe2O4; combustion synthesis; oxygen pressure; X-ray diffraction;

D O I：

10.1016/j.jallcom.2003.11.013

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The synthesis of zinc ferrite powders is carried out by combustion of a mixture of iron, iron oxides and zinc oxide powders in oxygen. An increase of oxygen pressure increases both the combustion temperature and velocity. The combustion reaction can not be self-sustained when the oxygen pressure is below 0.3 MPa. The results of XRD and Mossbauer spectroscopy show that intermediate phases of iron oxide, Fe1-xO,Fe1-zO and crystal defects appear when the oxygen pressure is excessively low or high. An analysis of the dependence of the degree of conversion to ferrite on the oxygen pressure has been made. In addition, the reaction mechanism associated with the combustion synthesis (CS) of ZnFe2O4 is proposed. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：298 / 303

页数：6

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