About the introduction and use of alumina crucible
About the introduction and use of alumina crucible
Alumina crucible is also called corundum crucible. The shape is mainly cylindrical, conical, square, etc. The alumina crucible has high purity and contains more than 99% AL2O3. 99% alumina material is used to make high temperature crucibles. It has good chemical resistance and temperature resistance, and can be used for a long time. At 1650°C, it can also be used at temperatures up to 1800°C. But only for short-term use.
The alumina crucible has good resistance to rapid heat and cooling and is not easy to burst. Because the alumina crucible is formed by grouting, the density is high. Corundum crucible has good high-temperature insulation and mechanical strength in oxidizing and reducing atmospheres, high thermal conductivity, low thermal expansion rate, and does not react with air, hydrogen, water vapor, carbon monoxide, etc. above 1700°C.
Alumina crucibles also include thermal analysis crucibles. Thermal analysis crucibles are mainly used for laboratory analysis. Use TGA instruments. The thermal analysis crucible has high thermal conductivity, and the heat transfer speed between the sample and the crucible is fast, which ensures that there is a very small temperature difference between the two and the temperature distribution is uniform. The structure and performance are stable. The high-purity powder cooperates with the precisely controlled high-temperature sintering process to form a dense and uniform microcrystalline phase structure, ensuring that there is no peak during use, and it does not react chemically or physically with the analysis sample. Ultra-high temperature stability, wide operating temperature range, higher operating temperature up to 1750 ℃, high repetitive utilization, washing with water or 10% hydrochloric acid, drying, can be used repeatedly, without affecting the experimental results.
Alumina crucible has a wide range of uses. It can be used in various laboratory metal and non-metal sample analysis and melting materials. It can also be used in shuttle kilns and push plate kilns to burn color materials, colorants, frit, pigments, luminescent materials, etc. . Small experimental kiln, experimental electric furnace adjustment formula and other purposes. Melting metals, precious metals, optical glass, analysis and firing of mineral raw materials such as rare earths, and firing of high-temperature products such as ceramic powder.
Alumina crucible is a deeper development and exploration of crucible technology. It is now used in more and more practical applications, and it will bring more convenience to our lives in the future.
