Co-Dispersion Behavior of ZrB₂-SiC-B₄C-C Powders with Polyethyleneimine

Jie Yin; Jian Chen; Xuejian Liu; Hui Zhang; Yongjie Yan; Zhengren Huang; Dongliang Jiang

doi:10.3390/ma6094249

Co-Dispersion Behavior of ZrB₂-SiC-B₄C-C Powders with Polyethyleneimine

Materials (Basel). 2013 Sep 23;6(9):4249-4258. doi: 10.3390/ma6094249.

Authors

Jie Yin^{1

2}, Jian Chen³, Xuejian Liu⁴, Hui Zhang⁵, Yongjie Yan⁶, Zhengren Huang⁷, Dongliang Jiang⁸

Affiliations

¹ State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China. yinjie19860810@gmail.com.
² Engineering Ceramics Department, Korea Institute of Materials Science (KIMS), 797 Changwondaero, Changwon, Gyeongnam 642-831, Korea. yinjie19860810@gmail.com.
³ State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China. nannancj@mail.sic.ac.cn.
⁴ State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China. xjliu@mail.sic.ac.cn.
⁵ State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China. zhanghui@mail.sic.ac.cn.
⁶ State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China. yjyan@mail.sic.ac.cn.
⁷ State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China. zhrhuang@mail.sic.ac.cn.
⁸ State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China. dljiang@mail.sic.ac.cn.

Abstract

The aqueous dispersion behavior of ZrB₂, SiC powders with B₄C and C as sintering aids was investigated. Well co-dispersed suspension can be obtained in acidic solutions in presence of polyethyleneimine (PEI). The adsorption of PEI on the powder surface was measured by thermal gravimetric (TG) analysis. Rheological measurements displayed the effect of dispersant on the flow behavior of as-prepared slurries. An optimum condition was obtained with 1 wt % PEI. The viscosity of 40 vol % ZrB₂-SiC-B₄C-C (ZSBC) suspension at 100 s^-1 was as low as 0.74 Pa·s, which was suitable for aqueous processing.

Keywords: ZrB2; dispersion; rheological behavior; surface; suspension.