Fe-5%Si多孔材料的制备及透气性研究

姬帅; 袁佳乐; 刘忠军

doi:10.7513/j.issn.1004-7638.2024.03.024

Fe-5%Si多孔材料的制备及透气性研究

doi: 10.7513/j.issn.1004-7638.2024.03.024

姬帅^{1, 2, ,},
袁佳乐¹,
刘忠军¹

1.
西安石油大学材料科学与工程学院, 陕西西安 710065
2.
南京工业大学材料化学工程国家重点实验室, 江苏南京 210009

基金项目: 陕西省自然科学基础研究计划面上项目（2021JM-410）；西安石油大学校青年创新团队基金 ( 2019QNKYCXTD12)。

详细信息

作者简介:
姬帅，1985年出生，男，博士，副教授，通讯作者，研究方向为金属基多孔材料的制备及结构表征，E-mail：305334345@qq.com

通讯作者:
姬帅，1985年出生，男，博士，副教授，通讯作者，研究方向为金属基多孔材料的制备及结构表征，E-mail：305334345@qq.com

中图分类号: TB383,TG141
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出版历程
- 收稿日期: 2023-09-19
- 刊出日期: 2024-07-02

Research on preparation of Fe-5%Si porous material and its permeability

Ji Shuai^{1, 2
, ,},
Yuan Jiale¹,
Liu Zhongjun¹

1.
School of Materials Science and Engineering, Xi’an Shiyou University, Xi’an 710065, Shaanxi , China
2.
State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech. University, Nanjing 210009, Jiangsu, China

摘要

摘要: 将三组相同的Fe-5%Si混合粉末分别在1050、1100、1150 ℃的温度下高温烧结2 h，对各个试样进行金相（OM）及扫描（SEM）显微组织观察、XRD物相分析，并采用自组装多孔材料性能检测仪测试其透气性。结果表明，烧结温度越高，多孔材料的孔径尺寸越小，1150 ℃试样的截面上会形成膜层；Fe-5%Si多孔材料的截面由Fe和Si的氧化物组成，且烧结温度越高，氧化物种类越少，即1050 ℃下有SiO₂、Fe₂O₃、FeO、Fe₂O₄四种物质，1100 ℃下有Fe₃O₄、FeO、SiO₂，1150 ℃下有FeO、SiO₂；1050 ℃下试样的气体流量随着通气压力的增大明显变大，当通气压力为140 kPa时，气体流量约为9200 mL/min；1100 ℃及1150 ℃下试样的气体流量随着通气压力的增大变化不大，当通气压力均为140 kPa时，二者的气体流量约为1000 mL/min。
- Fe-5%Si多孔材料 /
- 真空烧结 /
- 孔形貌 /
- 透气性
Abstract: Three groups of the same Fe-5%Si mixed powder were sintered at high temperature at 1050 , 1100 ℃ and 1150 ℃, respectively, and held for 2 h. Metallographic (OM) and scanning (SEM) microstructure observation and XRD phase analysis were performed for each sample, and the gas permeability was tested by self-assembled porous material performance detector. The results show that higher sintering temperature can generate smaller-pore porous material. The film layer will form on the cross section of the sample sintered at 1150 ℃. The cross section of Fe-5%Si porous material is composed of oxides of Fe and Si, and the higher the sintering temperature, the fewer types of oxides. There are SiO₂, Fe₂O₃, FeO and Fe₂O₄ when sintered at 1050 ℃, Fe₃O₄, FeO and SiO₂ at 1100 ℃, and FeO and SiO₂ at 1150℃. The gas flow rate of the sample at 1050 ℃ increases significantly with the increase of ventilation pressure. When the ventilation pressure is 140 kPa, the gas flow rate is about 9200 mL/min. The gas flow rate of samples sintered at 1100 ℃ and 1150 ℃ has little change with the increase of ventilation pressure. When the ventilation pressure is 140 kPa, the gas flow rate of both samples is about 1000 mL/min.
- Fe-5%Si porous material /
- vacuum sintering /
- pore morphology /
- permeability

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图 1 铁粉与硅粉

Figure 1. Powder of Fe and Si

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图 2 压坯模具与Fe-5%Si压坯实物

Figure 2. Schematic diagram of the mold and Fe-5%Si powder blank

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图 3 自组装透气度测试仪

Figure 3. Self-assembled permeability tester

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图 4 Fe-5%Si多孔材料在不同烧结温度下的金相显微组织

Figure 4. Metallographical micro-structure of Fe-5%Si porous material prepared at different sintering temperature

(a)1050 ℃；(b)1100 ℃；(c)1150 ℃

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图 5 Fe-5%Si多孔材料在不同烧结温度下的SEM显微组织

Figure 5. SEM images of Fe-5%Si porous material prepared at different sintering temperatures

(a)1050 ℃；(b)1100 ℃；(c)1150 ℃

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图 6 Fe-5%Si多孔材料在不同烧结温度下的XRD谱

Figure 6. XRD of Fe-5%Si porous material prepared at different temperatures

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图 7 Fe-5%Si多孔材料的气体流量随压力变化曲线

Figure 7. Gas flow curve of Fe-5%Si porous material with pressure

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