| NYCO's wollastonite is used
in the manufacture of many ceramic applications iincluding:
Structural Clay Products
- Brick
- Sewer pipe
- Roofing tile
- Clay floor tile
Whitewares
- Floor and wall tile
- Sanitaryware
- Electrical porcelain
- Decorative ceramics
- Dinnerware
Advanced Ceramics
- Bioceramics
- Structural zirconia and alumina substrates
- Complex near net shapes
Benefits of Wollastonite in Ceramics
Wollastonite's unique chemical purity and acicularity (aspect-ratio)
make it ideally suited to ceramic applications where shrinkage
reduction, increased firing strength, gloss improvement
and/or reduced surface defects in glazes is required.
Traditional Ceramics
- Contributes CaO to glaze formulations without outgassing
to improve glaze strength, surface finish and in the right
quantity, produces more matte finish in low fired glazes
- Improved green strength from acicular structure
- Permits accelerated drying schedules
- Maintains high brightness value during firing
- Wollastonite has a low sintering temperature
- Reduced moisture and expansion by improving drying rates
- Reduced thermal expansion characteristics
- NYCO's wollastonice typically has a LOI value of less
than 0.5%. during firing, a minimum volume of gas is generated
compared to other traditional materials, allowing a smooth
surface with diminished pinholing.
Advanced Ceramics
- Fine particle size wollastonite (NYAD 5000) acts as
a sintering aid which accelerates densification of alumina
and zirconia
- High aspect ratio wollastonite gives reinforcement to
near net-shape green structures
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