Alumina Crucibles
Advantages of alumina crucibles
Alumina crucibles have a relatively low coefficient of thermal expansion and a relatively high thermal conductivity. This enables them to exhibit good resistance to cracking and spalling when subjected to rapid heating and cooling processes (such as temperature rise and fall) during firing. Alumina crucibles performance is sufficiently excellent for the controlled temperature "rise and fall ”processes in most firing furnaces.
Applications of alumina crucibles
1. Chemical Synthesis: Alumina crucibles used for synthesis, purification, and crystallization of chemical compounds.
2. Metallurgical Processes: Alumina crucibles in metallurgical analysis, alloy preparation, and metal casting.
3. Materials Research: Alumina crucibles employed in the fabrication and characterization of ceramics, glasses, and advanced materials.
4. Thermal Analysis: Alumina crucibles used for facilitate thermogravimetric analysis (TGA), differential thermal analysis (DTA), and differential scanning calorimetry (DSC) experiments.
5. Research and Development: Alumina crucibles used for integral to research endeavors across various scientific disciplines, including pharmaceuticals, nanotechnology, and environmental science.
Characteristics of alumina crucibles
1. Alumina crucibles have good heat and cold resistance and are not prone to explosion.
2. The alumina crucible is formed by casting, with high density.
3. Alumina crucibles have good high-temperature insulation and mechanical strength in oxidizing and reducing atmospheres.
4. Alumina crucibles have high thermal conductivity and low thermal expansion rate.
Size,Performance index
Alumina ceramic performance index (Notice of Correct in Leakeage Rate)
NO. | Property | Unit | Alumina |
1 | Al2O3 | % | >99.3 |
2 | SiO2 | % | — |
3 | Density | g/cm3 | 3.88 |
4 | Water absorption | % | 0.01 |
5 | Compressive strength | MPa | 2300 |
6 | 20℃ leakage rates | Torr・L/sec | >10-11=1.33322×10-12Pa・m3/sec |
7 | Twisting in high temperature | mm | 0.2 allowed in 1600℃ |
8 | Bonding in high temperature | not bonded in 1600℃ | |
9 | 20—1000℃ coefficient of thermal expansion | mm.10-6/℃.m | 8.2 |
10 | Thermal conductivity | W/m.k | 25 |
11 | Electric insulation strength | KV/mm | 20 |
12 | 20℃direct current insulation resistance | Ohm/cm | 1014 |
13 | High-temperature insulation resistance | 1000℃ MΩ | ≥0.08 |
1300℃ MΩ | ≥0.02 | ||
14 | Thermal shock resistance | 4 times not cracked in 1550℃ | |
15 | Maximum working temperature | ℃ | 1800 |
16 | Hardness | Mohs | 9 |
17 | Flexural strength | Mpa | 350 |
Our factory
The company's main products are: alumina ceramic tubes, alumina ceramic crucibles, alumina ceramic rods, alumina ceramic boats, alumina ceramic plates, alumina ceramic parts, etc.
Our products are widely used in Semiconductor, Medical, Aerospace, Scientific Research, Fluid Controlling, Food Processing, Automotive, Defense, Thermal Processing, Electronic and Electrical, Mineral Processing,Textile, Pulp and Paper, Glass Processing, Mechanical Engineering, etc.
Our has established a high standard of quality system and strict quality control process, each batch of products are subjected to strict quality inspection, and different packaging requirements for different products to ensure the safe transportation of products.In order to ensure quality, the company adopts advanced finished product inspection equipment and standardized Gage calibration;Including automatic inspection equipment, coordinate measuring instrument, etc.
The service philosophy of our is meeting quality requirement and customer satisfaction. When there are problems of order, Our quickly respond to the honestly situation to the customer and give the customer the solution in short time. This service concept has resulted in the long-term cooperation between our and customers.
FAQ
A1: Alumina crucibles is a container made of aluminum oxide undefined material, designed to withstand extremely high temperatures and used for melting and holding molten materials.
A2: Alumina crucibles offer excellent thermal shock resistance, excellent undefined resistance, and excellent thermal insulation. They are as wel non-reactive, non-toxic, and non-porous.
A3: Alumina crucibles can be used to melt metals, alloys.
A4: Alumina crucibles come in a variety of sizes, ranging from 10ml to 1000ml.
Certificates
Feedback
1. If you have any questions or questions, please contact us and we will communicate with you as soon as possible.