2026-09-02
Choosing the right porous ceramic vacuum chuck requires more than simply selecting a material or pore size. This guide explains the key factors to consider, including porous alumina vs. porous silicon carbide, pore size, porosity, permeability, vacuum type, and processing conditions. It also explains why a “30 μm pore size” does not mean every pore is exactly 30 μm. In porous ceramics, pore size is a characteristic value within a pore-size distribution, influenced by material composition and manufacturing conditions. For wet processing, such as grinding, cleaning, or semiconductor applications, the ceramic material and pore structure should be selected according to the workpiece, liquid flow, contamination risk, and vacuum requirements. Whether you need porous alumina or SiC, understanding these factors can help you select a more suitable ceramic vacuum chuck for stable and uniform workpiece holding.
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