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South Africa
Persona de contacto Mr. Darren
No. 25 Main Street , Alberton, Johannesburg
Yttrium Stablized Zirconia (TZY*3) for dental ceramic
Introduction
Zirconium dioxide is one of the most studied ceramic materials. Pure ZrO2 has a monoclinic crystal structure at room temperature and transitions to tetragonal and cubic at increasing temperatures. The volume expansion caused by the cubic to tetragonal to monoclinic transformation induces very large stresses, and will cause pure ZrO2 to crack upon cooling from high temperatures. Several different oxides are added to zirconia to stabilize the tetragonal and/or cubic phases: magnesium oxide (MgO), yttrium oxide, (Y2O3), calcium oxide (CaO), and cerium(III) oxide (Ce2O3), amongst others
Registered Index
CAS No.: ********4
Chemical Formula: Y***-ZrO2
Appearance: White Odorless Powder
Insoluble in water
Crystallographic Structure: Tetragonal + Monoclinic
Quality Specification
| Particle Size (d*0): | 0.*-.0.4 um (adjustable) |
| BET (m2/g): | *2~*6 (adjustable) |
| Y2O3: | 5.*5 ± 0.*5% |
| Al**3: | 0.*0 ~ 0.*0% |
| SiO2: | 0.*1% max. |
| Fe2O3: | 0.*1% max. |
| TiO2 : | 0.*1% max. |
| LOI(at ***0C) | <*0% max |
USAGE
It is used as a refractory material, in insulation, abrasives, enamels and ceramic glazes. Stabilized zirconia is used in oxygen sensors and fuel cell membranes because it has the ability to allow oxygen ions to move freely through the crystal structure at high temperatures. This high ionic conductivity (and a low electronic conductivity) makes it one of the most useful electroceramics.
Package: *0/*5kg net drums or paper bags with PE
inner.
**0 kg drums with PE inner
1MT Polypropylene lined bulk bag(s)
Shipment: 1x*0 FCL of ****0mt net
