Aluminium Oxide Crucible AL2O3 Crucible
product presentation
Aluminium oxide crucible commonly known as corundum crucible, people usually will alumina content in more than 95% crucible called corundum crucible. Corundum crucible is strong melting resistance, high temperature resistance, acid and alkali resistance, cold and heat resistance, chemical corrosion resistance. It is suitable for some weakly alkaline substances such as anhydrous Na2CO3 as flux melting samples, but not for Na2O2, NaOH, etc. Strong alkaline substances and acidic substances used as flux melting samples... alumina crucible with 99.70% purity has good high temperature insulation and mechanical strength in redox atmosphere of 1650℃ -1700℃, with maximum temperature of 1800℃ in short time. According to the application conditions, alumina crucibles are available in various sizes and shapes.
Main Features
Main Featuress of alumina ceramic crucible: heat resistance of about 1200 degrees, suitable for K2S207 and other acid material melting samples. Generally, it should not be used for melting of Na0H, Na202 and Na2CO3, so as not to corrode porcelain crucible. Porcelain crucible cannot not contact with hydrofluoric acid.
Alumina ceramic crucible can be boiled HCl to ensure the purity of the material and high temperature resistance. The material has high density, good oxidation resistance, 400-500 degrees higher than the graphite material, up to 900 degrees higher, long service life. With high heat resistance, low thermal expansion coefficient, good heat and shock resistance and good corrosion resistance. The chemical performance is stable and basically does not react with the melted metal, improving the purity of the alloy.
(1) Easy to wash and keep clean. The glaze of ceramic crucible is bright and delicate, and it is easy to wash after use.
(2) Porcelain stoma is very few, and the water absorption rate is very low. Storage of solution with ceramic crucible and strict sealing can prevent volatilization, infiltration and invasion of external bacteria.
(3) Chemical stability and durability. This point is superior to metal products such as copper, iron, aluminum, etc., ceramic crucible has a certain resistance to acid, alkali, salt and carbonate gas erosion in the atmosphere, not easy to have chemical reaction with these substances, not rust aging.
(4) Good thermal stability and slow heat transfer. Ceramic crucible has the performance of going to a certain temperature difference, which is better than glassware, it is a bad conductor of heat, slow heat transfer, used to hold boiling water or hot solution, the end is not too hot.
Product Application
Alumina is very widely used, electronics, petroleum, chemical, refractory, ceramics, plastics, textile, paper, and pharmaceutical and many other fields can be seen its figure, is generally special properties of alumina and aluminum hydroxide. However, more than 90 percent of alumina is used as raw material for electrolytic aluminum.
At present, there are many kinds of non-alumina for treatment, more than 300 types, each of which has excellent physical and chemical properties, but the price is much higher than alumina for treatment.
In high purity ultrafine alumina, for example, because of its high melting point, high hardness, high resistance, good mechanical properties, wear resistance, corrosion resistance, heat resistance and other excellent 2.Main Featuress, so is widely used in single crystal materials, advanced porcelain, artificial bone, semiconductor, grinding materials, integrated circuit substrate, recording tape filler, catalyst and its carrier, laser materials, cutting tools, etc.
