Influence of surface oxide layer of SiC powder on the rheological properties of its slurry

被引:10
作者
Gao, Xiaoying [1 ]
Wang, Ruiyu [1 ]
Zhao, Juan [1 ]
Huang, Junxiao [1 ]
Gao, Yuan [1 ]
Liu, Huitao [1 ]
机构
[1] Yantai Univ, Coll Chem & Chem Engn, Yantai 264005, Peoples R China
基金
中国国家自然科学基金;
关键词
impure ions; rheological properties; SiC; surface oxide layer; Zeta potential; SILICON-CARBIDE; OXIDATION BEHAVIOR; ADSORPTION; AIR;
D O I
10.1111/ijac.13385
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
In this paper, the influence of surface oxide layer of SiC powder on the rheological behavior of its slurry was studied by acid washing, HF etching, and calcination oxidation processes. Zeta potential, particle size, inductively coupled plasma atomic emission spectrometry (ICP-AES), energy dispersive X-ray spectroscopy, and viscosity tests indicated the main factor that resulted in high viscosity of slurry is impure ions existing either on the powder surface or in the water phase, rather than the surface oxide layer. After the impure ions are removed, the surface oxide layer formed at a calcination temperature range of 400 degrees C-750 degrees C does not cause an increase in the slurry viscosity, but contributes to an improvement in the rheological properties of SiC slurry.
引用
收藏
页码:484 / 490
页数:7
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