Our company, in cooperation with foreign partners from Southeast Asia, produces for own needs and for sale various components for heating units of high-temperature furnaces and growth stations for various purposes, as well as other products.
In particular, we take orders and, according to customer`s requirements, we supply the necessary sizes of ceramic lining elements based on corundum(Al2O3) and zirconium dioxide(ZrO2), for high temperature furnaces.
Ceramics based on zirconium dioxide stabilized with yttrium (Y2O3) can withstand temperatures of more than 2200 °C. It`s resistant to acid and alkaline influence, and also has considerable strength. This ceramic is characterized by a unique ability to increase its mechanical strength under load due to the transformation strengthening mechanism and can work in vacuum,as well as in an oxidizing and a reducing atmospheres.
Different types of ceramic products.
Ceramics based on zirconium dioxide.
| Mass fraction of the main componentZrO2+HfO2% | Mass fraction of stabilizing additive % | Mass fraction of impurities % | Operating temperature in Kelvin degrees | ||
| Y2O3 | Ca | SiO2 | Fe2O3 | ||
| 91,8 | 8 | 0 | 0,1 | 0,1 | 2473 |
| 87,8 – 91,8 | 8-12 | 0 | 0,1 | 0,1 | 2473 |
| 94,6 | 0 | 5,2 | 0,1 | 0,1 | 2473 – 2673 |
Physical and mechanical properties of corundum and zirconia ceramics.
| Property | Alumina | Y-TZP |
| Chemical composition | 100% Al2O3 | ZrO2+(3-8)%mol Y2O3 |
| Density g/cm 3 | ≥ 3.97 | > 6 |
| Porosity, % | < 0.1 | < 0.1 |
| Flexural strength, MPa | 500 | 900-1200 |
| Compressive Strength, MPa | 4100 | 2000 |
| Young’s modulus, hPa | 380 | 210 |
| Fracture toughness К1С MPa m-1 | 4 | 9-10 |
| Thermal expansion coefficient, (293-323К) К-1 | 8 х 10-6 | 11 х 10-6 |
| Thermal conductivity (298К), Wm К-1 | 30 | 2 |
| Operating temperature (К) | 1973-2023 | 2473-2673 |
The excellent physical and chemical properties of zirconia ceramics, as a refractory material, allow this product to be widely used in the mechanical engineering, electronics,, in the aerospace industry , etc.
We sincerely welcome new and old partners in our country and around the world.The company TechSapphire Ltd. is ready to offer mutually beneficial cooperation on additional segments of our products. All products are manufactured by uswith using modern technologiesand innovations with strict quality control! This allows us to supply world-class products to our customers.
Our business philosophy is QUALITATIVE & SCIENTIFIC PRODUCTS, HONEST PARTNERSHIP RELATIONS WITH MUTUALLY BENEFICIAL COOPERATION!
We suggest cooperation to all interested companies!