Zirconia Toughened Alumina ZTA Crucibles For Dental Zirconia Restorations Sintering

ZG Zirconia Toughened Alumina (ZTA) crucibles are essentially much similar product with our Alumina crucibles. Their difference lies to the addition of a specific blend of Zirconia Silicate to the main Alumina matrix before sintering.

The main advantages of Zirconia Toughened Alumina (ZTA) crucibles are that provides additional strength and toughness over Alumina for temperatures below 1500 C, and has fairly improved thermal shock resistance. Also ZTA crucibles exhibit better surface finish than Alumina making them a better choice for bio-compatible and analytical grade application. Our t-ceramics ZTA crucibles are offered without significant additional cost compared to pure Alumina crucibles, retaining its prices much lower than Fully Yttria Stabillized Zirconia (8YSZ) while have improved some of the properties where Yttria Stabilized Zirconia outbalance Alumina. Thus ZTA crucibles are presenting a cost effective alternative to YSZ for temperatures up to 1500C.

It should be noted that ZTA can, like the Yttria Stabilized Zirconia, be vulnerable to chemisorption in the presence of water molecules but this effect is much reduced compared with YSZ. However use in moist environments at temperatures above 250C also must be carefully considered.

Zirconia Toughened Alumina (ZTA) t-ceramics Crucibles Key Features:

• 1600 C maximum service temperature
• 85% wt. Alumina, 9.4% wt. Zirconia/Hafnia, 5.6% wt. Silica, less than 250ppm Fe2O3
• Excellent chemical resistance to corrosion from chemicals even at elevated temperatures
• Low (closed) porosity and fine surface finish enhance cleaning and prevents chemical attack
• Elevated mechanical strength and wear resistance up to 1500º C
• Very good thermal shock resistance behavior
• Consistent dimensional control
• State-of-the-art crucibles manufactured by the most cost-effective process.

Applications.

Analytical applications, metals melting, ceramic powders heat treatment, material acid treatment even at elevated temperature, crucibles for annealing, crucibles for fusion processes, crucibles for crystal growing, crucibles for extremely corrosive environments. Other common application is dental Zirconia restorations sintering.