掺杂Mn的MgMnxFe2-xO4系红外陶瓷材料的制备与表征
毕业论文关键词 红外 陶瓷 烧结 红外发射率
Title Preparation and characterization of Mn-doped MgMnxFe2-xO4 Department infrared ceramic material
Abstract
This paper reviews the commonly used ceramic infrared emitter preparation, sintering methods and applications, as while as prospects for the future development prospects infrared ceramic. This experiment was prepared by solid-phase sintering MgMnxFe2-xO4 ceramic materials, and studied the impact of the structure and properties of MgMnxFe2-xO4 ceramic elements through different amount of Mn doping. In this study, the ceramic samples were characterized by XRD phase analysis, porosity testing and infrared emissivity test results show that the impurity MgMnxFe2-xO4 ceramic items rarely prepared, high purity, porosity increases with Mn content. For MgMnxFe2-xO4 ceramic materials in the long-wave band, emission rate is much higher than the emission rate in shortwave band and two emission peaks appeared around infrared emissivity amount of Mn doped with x = 0.2 in the long-wave band. Emission rates are all greater than 0.840 up to 0.877; highest in the shortwave bands is only 0.305.
Key words: IR ceramic sintering infrared emissivity
目 录
1 引言 1
1.1 红外辐射陶瓷 1
1.2 红外辐射的产生机理 2
1.3 红外陶瓷的制备方法 3
1.4 红外辐射陶瓷的烧结方法 4
1.5 提高红外陶瓷材料红外发射率的方法和手段 4
1.6 红外陶瓷材料的应用 4
1.7 红外陶瓷研究进展及前景展望 5
1.8 本课题研究的问题 7
1.9 研究手段 7
2 实验过程 8
2.1 实验原料和设备 8
2.2 MgMnxFe2-xO4粉体的制备 8
2.3 X射线衍射物相分析（XRD） 10
2.4 扫描电镜观察（SEM） 12
2.5 红外吸收率测试 13
2.6 红外发射率测试 13
2.7 气孔率测试 13
3 实验结果分析 15
3.1 X射线衍射结果与分析 15
3.2 SEM测试结果与分析 16
3.3 红外发射率测试结果与分析 17
3.4 红外吸收率测试与分析(FT-IR) 19
3.5气孔率测试结果与分析 20
结论 22
致 谢 23
参考文献24
1 引言
我们生存的宇宙充满着大量的红外辐射线，也就是常说的热辐射。关于不可见的热辐射线的假说很早就有了，早在公元前，罗马哲学家卡尔曾在文章中论述太阳向外发射肉眼看不见的热射线。在18世纪末开始了对热辐射的系统研究，由于预热有关的蒸汽机等在工业和化学业的广泛应用推动了热辐射有关的发展。睿电化学家谢丽、郝旭尔，意大利物理学家曼劳尼等对红外辐射线的本质进行了大量的探究，认为热辐射的衰减与距离平方成反比，红外辐射的性质与种类、介质等有关。到19世纪中叶，才确立了红外线和光的本质一致性，揭示了电磁波的本质[1]。
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