| 氮化硅基多孔陶瓷的孔隙结构控制 |
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| 引用本文： | 陈斐,马玲玲,沈强,张联盟.氮化硅基多孔陶瓷的孔隙结构控制[J].稀有金属材料与工程,2011(Z1):567-570. |
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| 作者姓名： | 陈斐 马玲玲 沈强 张联盟 |
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| 作者单位： | 武汉理工大学材料复合新技术国家重点实验室 |
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| 基金项目： | 国家自然科学基金(NSFC-50972111);中央高校基本科研业务费专项资金 |
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| 摘 要： | 氮化硅多孔陶瓷的孔隙率、孔径的调节与孔隙结构的控制主要是通过改变粉料颗粒配比、料浆浓度、成形密度和烧结工艺来实现的,得到的材料多以β-Si3N4为主相,对α-Si3N4多孔陶瓷材料的研究较少。本实验以磷酸锆为结合剂并添加不同成孔剂低温常压烧结制备以α-Si3N4为主相、孔隙可控的氮化硅基多孔陶瓷,孔隙率范围30%~70%,抗弯强度16~108MPa。
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| 关 键 词： | Si3N4多孔陶瓷 成孔剂 孔隙结构控制 |
Pore Strcture Control of Silicon Nitride Based Porous Ceramics |
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| Chen Fei, Ma Lingling, Shen Qiang, Zhang Lianmeng.Pore Strcture Control of Silicon Nitride Based Porous Ceramics[J].Rare Metal Materials and Engineering,2011(Z1):567-570. |
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| Authors: | Chen Fei Ma Lingling Shen Qiang Zhang Lianmeng |
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| Affiliation: | (State Key Lab of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China) |
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| Abstract: | Porosity, pore size and pore structure of silicon nitride porous ceramics are mainly controlled by changing the ratio of powder particles, slurry concentration, formation density and sintering process, mostly to β-Si3N4 phase, α-Si3N4 less porous ceramic materials. Using ZrP2O7 as binder and adding different pore-forming agents, porosity-controllable silicon nitride based porous ceramics were prepared with α-Si3N4 as main phase by pressureless sintering at low temperature, whose porosity is 30%-70% and bending strength is 16-108 MPa. |
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| Keywords: | Si3N4 porous ceramics pore-forming agent pore structure control |
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