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J. Korean Ceram. Soc. > Volume 48(6); 2011 > Article
Journal of the Korean Ceramic Society 2011;48(6): 600.
doi: https://doi.org/10.4191/kcers.2011.48.6.600
Controlling the Porosity of Particle Stabilized Al2O3 Based Ceramics
Ashish Pokhrel, Jung-Gyu Park, Gae-Hyong Jho, Jin-Young Kim, Ik-Jin Kim
Institute of Processing and Application of Inorganic Materials (PAIM) Department of Advanced Materials Science and Engineering, Hanseo University
The microstructure of particle stabilized wet foams can be tailored by using parameters including the amphiphile concentration, contact angle, and surface tension. The influence of these parameters on the porosity is satisfactorily described in terms of a combined influence of the contact angle and surface tension of the initial suspensions that are directly affected by the amphiphile concentration. The resulting macroporous structures exhibited a total porosity of 82%. The foam cells were predominantly closed due to the air bubbles of the original wet foams being completely covered.
Key words: Contact angle, Amphiphile concentration, Surface tension, Wet foams, Porosity
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