Talc Ceramic Additive for Cordierite
CAS Number: 14807-96-6
Talc (Mg3Si4O10(OH)2) is a key raw material for cordierite ceramics and a versatile fluxing and plasticizing agent in traditional ceramics. In cordierite synthesis, stoichiometric blends of talc, kaolin, and alumina yield the 2MgO·2Al2O3·5SiO2 phase with very low thermal expansion coefficient (CTE ~1.5×10-6/°C), ideal for kiln furniture, catalyst substrates, and diesel particulate filters.
Technical Specifications
| appearance | White to off-white fine powder |
| purity (%) | ≥95 |
| MgO content (%) | 29–32 |
| SiO2 content (%) | 56–62 |
| D50 particle size (µm) | 5–20 |
Applications
- Primary raw material for cordierite honeycomb ceramics
- Flux in stoneware and earthenware ceramic bodies
- Plasticizer for ceramic extrusion compounds
- Refractory filler in kiln furniture compositions
- Filler in glass fiber manufacturing
Key Features
- Essential precursor for ultra-low CTE cordierite ceramics
- Improves plasticity and workability of ceramic bodies
- Lowers firing temperature when used as a flux
- Excellent lubricity beneficial in dry pressing and extrusion
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CAS Number
14807-96-6
Category
Ceramic / Glass AdditivesAvailability
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