Special nano-zirconia for the sizing nozzle,
Basic information
The rapid expansion rate of the sizing nozzle determines the life of the billet continuous casting. Analysis shows that the main reason for diameter expansion is the low strength of the product and large pores. Therefore, using nanotechnology to reduce the pores of the sizing nozzle is expected to improve its performance.
The volume density and apparent porosity of the calibrated nozzle green body after nano-zirconium dioxide () composite is the same after being fired at ℃ as the calibrated nozzle before nano-composite after being fired at ℃. After the sample was fired at ℃, the apparent porosity dropped from to. The pore diameter and pore volume have become smaller, and most of them are concentrated in the visible. Nano-zirconia () mainly fills the pores, plays a filling role and promotes sintering. Reduce porosity and resist acid and alkali
Technical indicators
Model
Particle size
Zirconia content
Yttria Content
,
Iron dioxide()
Silicon dioxide
Titanium dioxide
Aluminum dioxide
Sodium oxide
Calcium oxide
Application scope
Functional coating materials added to coatings have anti-corrosion and antibacterial effects, improving Wear-resistant and fire-resistant effect.
Zirconium dioxide can be used in high-strength, high-toughness wear-resistant products such as mill linings, cutting tools, wire drawing dies, hot extrusion dies, nozzles, balls, pump parts, various sliding parts, etc.
Functional ceramics, structural ceramics, electronic ceramics, bioceramics
Artificial gemstone abrasive materials
Zirconium dioxide can also be used as refractory electronic ceramic burning support pads, refractory materials for melting glass and metallurgical metals.
Piezoelectric element oxygen sensitive resistor large capacity capacitor
Packaging
Kilogram per bag/barrel
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