alexa Effects of mono-dispersed PMMA micro-balls as pore-forming agent on the properties of porous YSZ ceramics
Materials Science

Materials Science

Journal of Material Sciences & Engineering

Author(s): Ruiping Liu, Changan Wang

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Porous yttria-stabilized zirconia (YSZ) ceramics were successfully fabricated by the dry pressing method with different size (1.8–20μm) and amount (2–60vol.%) of mono-dispersed poly methyl methacrylate (PMMA) micro-balls. Different PMMA additions with different size and amount were investigated to achieve optimal thermal and mechanical properties. With increases of the amount of PMMA, the porosity of porous YSZ ceramics ranges from 7.29% to 51.6%, the flexural strength increases firstly and then decreases, and the thermal conductivity decreases continuously. With decreases of the diameter of PMMA micro-balls, the mean pore size and thermal conductivity of porous YSZ ceramics decrease, and the flexural strength of porous YSZ ceramics with same porosity increases firstly and then decreases. The porous YSZ ceramics with a higher porosity (18.44±1.24%), the highest flexural strength (106.88±3.2179MPa) and low thermal conductivity (1.105±0.15W/mK) can be obtained when the particle diameter and the amount of PMMA are 5μm and 20vol.%, respectively.

This article was published in Journal of the European Ceramic Society and referenced in Journal of Material Sciences & Engineering

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