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Co-Dispersion Behavior of ZrB2–SiC–B4C–C Powders with Polyethyleneimine
State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
Engineering Ceramics Department, Korea Institute of Materials Science (KIMS), 797 Changwondaero, Changwon, Gyeongnam 642-831, Korea
* Authors to whom correspondence should be addressed.
Received: 8 July 2013; in revised form: 20 August 2013 / Accepted: 20 August 2013 / Published: 23 September 2013
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; suspension; surface; rheological behavior
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MDPI and ACS Style
Yin, J.; Chen, J.; Liu, X.; Zhang, H.; Yan, Y.; Huang, Z.; Jiang, D. Co-Dispersion Behavior of ZrB2–SiC–B4C–C Powders with Polyethyleneimine. Materials 2013, 6, 4249-4258.
Yin J, Chen J, Liu X, Zhang H, Yan Y, Huang Z, Jiang D. Co-Dispersion Behavior of ZrB2–SiC–B4C–C Powders with Polyethyleneimine. Materials. 2013; 6(9):4249-4258.
Yin, Jie; Chen, Jian; Liu, Xuejian; Zhang, Hui; Yan, Yongjie; Huang, Zhengren; Jiang, Dongliang. 2013. "Co-Dispersion Behavior of ZrB2–SiC–B4C–C Powders with Polyethyleneimine." Materials 6, no. 9: 4249-4258.