Fractions design of irregular particles in suspensions for the fabrication of multiscale ceramic components by gelcasting

被引：17

作者：

Lu, Zhongliang ^{[1
,2
,5
]}

Miao, Kai ^{[1
,2
,3
,4
,5
]}

Zhu, Weijun ^{[1
,2
,5
]}

Chen, Yi ^{[1
,2
]}

Xia, Yuanlin ^{[1
,2
]}

Li, Dichen ^{[1
,2
,5
]}

机构：

[1] Xi An Jiao Tong Univ, State Key Lab Mfg Syst Engn, Xian 710049, Shaanxi, Peoples R China

[2] Xi An Jiao Tong Univ, Sch Mech Engn, Xian 710049, Shaanxi, Peoples R China

[3] Xi An Jiao Tong Univ, State Key Lab Strength & Vibrat Mech Struct, Xian 710049, Shaanxi, Peoples R China

[4] Xi An Jiao Tong Univ, Sch Aerosp, Xian 710049, Shaanxi, Peoples R China

[5] Collaborat Innovat Ctr High End Mfg Equipment, Xian 710049, Shaanxi, Peoples R China

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2018年 / 38卷 / 02期

关键词：

Gelcasting; Irregular particles; Solid loadings; Rheological properties; ALUMINA CERAMICS; PACKING; STRENGTH; SIMULATION; VISCOSITY; RHEOLOGY;

D O I：

10.1016/j.jeurceramsoc.2017.08.002

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A new approach for the preparation of suspensions with a high solid loading and low viscosity by using irregular particles was proposed. These suspensions were prepared for the fabrication of multiscale ceramic components by gelcasting. Based on the Funk-Dinger function and fractal theory, the closest packing theory was applied to optimize the volume fractions of different particles. The maximum solid loading of slurries prepared for gel casting was 62 vol%, and the viscosity at a shear rate of 100 s(-1) was only 0.29 Pa s. By as-prepared suspensions, a decimeter-scale ceramic part with submillimeter features was fabricated successfully by gelcasting, which verify the feasibility of the proposed method.

引用

页码：671 / 678

页数：8