Well dispersed modified SiC powder was prepared via disperse black BL (DBBL). High density SiC green body was prepared by the modified SiC powder. The modified SiC powder was obtained via putting in 1.2 wt% DBBL through agitating for 2 h. The slurry obtained by modified SiC powder with a 50 vol % solid content has a viscosity of 0.430 Pa⋅s. The dense SiC green body (2.43 g/cm³) was obtained via slip casting. The electron microscopy as well as thermogravimetry were applied to determine the adsorption of the modifier on the SiC powder. Experimental data shows that the adsorption kinetics equation of DBBL on the SiC powder obeys the pseudo‐first‐order kinetics model. And the isotherm equation agrees with the Langmuir model. The experiment dates indicate that the adsorption mode of DBBL was physical adsorption.

中文翻译：

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分散黑BL对SiC粉表面改性的吸附等温线，动力学及机理研究

通过分散黑BL（DBBL）制备分散良好的改性SiC粉末。用改性后的SiC粉制备了高密度SiC生坯。通过将1.2wt％的DBBL通过搅拌2h而获得改性的SiC粉末。由固含量为50体积％的改性SiC粉末获得的浆料的粘度为0.430Pa·s。通过流延铸造获得致密的SiC生坯（2.43g / cm ³）。应用电子显微镜和热重分析法测定改性剂在SiC粉末上的吸附。实验数据表明，DBBL在SiC粉末上的吸附动力学方程符合拟一级动力学模型。等温线方程与Langmuir模型一致。实验数据表明DBBL的吸附方式为物理吸附。