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Preparation method and application of porous silicon nitride ceramic with regular pore structure
The invention relates to the field of porous materials, in particular to a preparation method and application of porous silicon nitride ceramic with a regular pore structure. Geometric figures with regular pore structures, such as polyhedrons periodically stacked in a space or geometries based on triple-cycle minimum curved surfaces, are constructed by utilizing three-dimensional modeling software; forming a resin template with a regular structure through photocuring 3D printing; preparing silicon nitride ceramic slurry, and carrying out ball milling and uniform mixing; injecting the ceramic slurry into the mold in which the resin template is placed, degassing, compacting and curing to obtain a porous silicon nitride ceramic green body; the green body is densified through pyrolysis degumming, sintering and other processes, and the porous silicon nitride ceramic with the regular pore structure is obtained. The porous silicon nitride ceramic has a macroscopically regular pore structure, high volume fraction, good geometric dimension precision and relatively high density, and solves the problem of mechanical property degradation caused by triangular pores remained due to template removal in porous foam preparation by a traditional template slurry hanging method.
本发明涉及多孔材料领域，具体地说是一种具有规则孔隙结构多孔氮化硅陶瓷的制备方法及应用。利用三维建模软件构建出在空间内周期性堆垛的多面体或基于三重周期最小曲面的几何体等具有规则孔隙结构的几何图形；光固化3D打印成型具有规则结构的树脂模板；配制氮化硅陶瓷浆料，并球磨混合均匀；向放置好树脂模板的模具内注入陶瓷浆料，除气、振实、固化得到多孔氮化硅陶瓷坯体；坯体经热解脱胶、烧结等工艺实现致密化，得到具有规则孔隙结构的多孔氮化硅陶瓷。该多孔氮化硅陶瓷具有宏观规则的孔隙结构、高体积分数、良好的几何尺寸精度、较高的致密度，克服了传统模板挂浆法制备多孔泡沫因模板脱除而残留的三角孔所引起力学性能劣化的问题。
Preparation method and application of porous silicon nitride ceramic with regular pore structure
The invention relates to the field of porous materials, in particular to a preparation method and application of porous silicon nitride ceramic with a regular pore structure. Geometric figures with regular pore structures, such as polyhedrons periodically stacked in a space or geometries based on triple-cycle minimum curved surfaces, are constructed by utilizing three-dimensional modeling software; forming a resin template with a regular structure through photocuring 3D printing; preparing silicon nitride ceramic slurry, and carrying out ball milling and uniform mixing; injecting the ceramic slurry into the mold in which the resin template is placed, degassing, compacting and curing to obtain a porous silicon nitride ceramic green body; the green body is densified through pyrolysis degumming, sintering and other processes, and the porous silicon nitride ceramic with the regular pore structure is obtained. The porous silicon nitride ceramic has a macroscopically regular pore structure, high volume fraction, good geometric dimension precision and relatively high density, and solves the problem of mechanical property degradation caused by triangular pores remained due to template removal in porous foam preparation by a traditional template slurry hanging method.
本发明涉及多孔材料领域，具体地说是一种具有规则孔隙结构多孔氮化硅陶瓷的制备方法及应用。利用三维建模软件构建出在空间内周期性堆垛的多面体或基于三重周期最小曲面的几何体等具有规则孔隙结构的几何图形；光固化3D打印成型具有规则结构的树脂模板；配制氮化硅陶瓷浆料，并球磨混合均匀；向放置好树脂模板的模具内注入陶瓷浆料，除气、振实、固化得到多孔氮化硅陶瓷坯体；坯体经热解脱胶、烧结等工艺实现致密化，得到具有规则孔隙结构的多孔氮化硅陶瓷。该多孔氮化硅陶瓷具有宏观规则的孔隙结构、高体积分数、良好的几何尺寸精度、较高的致密度，克服了传统模板挂浆法制备多孔泡沫因模板脱除而残留的三角孔所引起力学性能劣化的问题。
Preparation method and application of porous silicon nitride ceramic with regular pore structure
一种具有规则孔隙结构多孔氮化硅陶瓷的制备方法及应用
ZHANG JINGSONG (author) / XU YICHEN (author) / GAO YONG (author) / YANG ZHENMING (author) / TIAN CHONG (author)
2023-03-03
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
B33Y
ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
,
Additive (generative) Fertigung, d. h. die Herstellung von dreidimensionalen [3D] Bauteilen durch additive Abscheidung, additive Agglomeration oder additive Schichtung, z. B. durch 3D- Drucken, Stereolithografie oder selektives Lasersintern
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