工程科学学报Issue(2)：219-224,6.DOI:10.13374/j.issn2095-9389.2015.02.013
Fe--Sialon复合材料中 Fe3 Si 合成热力学分析及实验验证
Thermodynamic analysis and experimental confirmation of Fe3 Si synthesis in Fe--Sialon composites
摘要
Abstract
A thermodynamic analysis was performed on possible reactions of Fe3 O4 in sediment material, intermediate product FeO, Fe, and other matters. In combination with the predominant area phase diagram of the Fe-Si system under different carbon mon-oxide partial pressures and excess carbon and silicon dioxide as well as the thermodynamic parameter state diagram of the Fe-O-N sys-tem, it is found that Fe finally exists in the form of Fe3 Si, which provides a thermodynamic theoretical basis for using sediment to syn-thesize O′-Sialon-SiC-Fe3 Si ( Fe-Sialon) composites. These Fe-Sialon matrix composites made from sediment were prepared by car-bothermal reduction-nitridation on the basis of thermodynamic analysis. X-ray diffraction and scanning electron microscopy results in-dicate that plentiful O′-Sialon phase and a small quantity of SiC and Fe3 Si phases appear in samples, and the crystalline grains are fi-ber-, cotton-, or short column-shaped, which is consistent with thermodynamic analysis results.关键词
复合材料/铁/Sialon/热力学分析/碳热还原/氮化/实验验证Key words
composite materials/iron/Sialon/thermodynamic analysis/carbothermal reduction/nitridation/experimental con-firmation分类
通用工业技术引用本文复制引用
郝洪顺,苏青,连芳,郭伟华,靳闪闪,刘贵山,高文元..Fe--Sialon复合材料中 Fe3 Si 合成热力学分析及实验验证[J].工程科学学报,2015,(2):219-224,6.基金项目
国家科技支撑计划资助项目(2011BAB03B05) （2011BAB03B05）
住房和城乡建设部科学技术计划资助项目(2013- K4-8) （2013- K4-8）
辽宁省教育厅科技研究项目(L2011078) （L2011078）
