造孔剂法制备多孔SiC陶瓷及性能研究
毕业论文关键词：碳化硅陶瓷；多孔；造孔剂法；性能
Preparation of porous SiC ceramic by pore forming agent method and study of properties
Abstract: This experiment is a pore-forming agent to acrylamide in Al2O3-Y2O3 as a sintering
aid , sintering at 1550 ℃, with a pore-forming agent of porous silicon carbide were prepared
and measured using a pycnometer method true density of silicon carbide , and the determination
of the volume of the secrets of the SiC porous ceramics with drainage method to analyze the
impact on silicon carbide ceramic porosity and compressive properties of different content of
pore-forming agent . And by scanning electron microscopic morphology of porous silicon
carbide ceramics. Research shows that with the increase of pore-forming agent content , the
porosity of the porous SiC ceramics upgrade , reducing its compression performance ; its
compression performance, with the increase of sintering temperature increases.
Keywords: silicon carbide ceramics; porosity; pore forming agent; performance
目录
1. 绪论 . 1
1.1. 碳化硅材料的性质 1
1.2. 碳化硅多孔陶瓷简介 1
1.2.1. 碳化硅多孔陶瓷的性质 . 2
1.2.2. 碳化硅多孔陶瓷的研究情况 . 3
1.2.3. 碳化硅多孔陶瓷的制备 . 3
1.2.4. 多孔SiC 陶瓷的成型工艺 . 6
1.2.5. 碳化硅多孔陶瓷烧结工艺 . 7
1.3. 课题研究的背景和意义 8
1.3.1. 课题研究内容 . 8
1.3.2. 实验方案设计 . 8
2. 实验部分 . 9
2.1. 药品 9
2.2. 仪器和设备 9
2.3. 实验过程 . 10
2.3.1. 预混料 10
2.3.2. 成型 11
2.3.3. 烧成 12
2.4. 性能测试 . 13
2.4.1. 样品真密度测定 13
2.4.2. 样品体积密度测定 15
2.4.3. 样块孔隙率计算 17
2.4.4. 抗压强度测试 17
2.4.5. 扫描电镜观察样品表面形貌 18
3. 结果与讨论 20
3.1. 实验结果 . 21
3.1.1. 样品真密度 23
3.1.2. 样品体积密度 23
3.1.3. 样品孔隙率 23
3.1.4. 样品的抗压性能 24
3.2. 结果分析 . 25
3.2.1. 造孔剂含量对碳化硅多孔陶瓷体积密度的影响 25
3.2.2. 造孔剂含量对碳化硅多孔陶瓷的孔隙率的影响 25 3.2.3. 造孔剂含量对碳化硅多孔陶瓷抗压性能的影响 26
3.2.4. 碳化硅多孔陶瓷的微观形貌 27
4. 结论 29
致 谢 30
参考文献 . 31
1. 绪论
1.1. 碳化硅材料的性质
碳化硅晶型结构有两种，分别为 α型与β 型，α型为高温稳定的吹冰方晶型，β 型是低
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