The ceramic crucible made of 85% alumina can withstand a maximum temperature of 1400°C for short-term use and is suitable for long-term use in stable environments with moderate temperature changes. This crucible exhibits excellent high-temperature insulation properties and mechanical strength, with a large thermal conductivity and low thermal expansion, making it ideal for use under reduction-oxidation atmospheres between 1290°C and 1350°C.
Detailed Explanation:
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Material Composition and Properties: The crucible is composed of 85% alumina, which is a form of aluminum oxide known for its high melting point and thermal stability. Alumina is a refractory material, meaning it can withstand extremely high temperatures without melting or deforming. This property is crucial for a crucible used in high-temperature applications.
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Temperature Tolerance: The crucible can handle temperatures up to 1400°C for short durations. This high-temperature tolerance is essential for processes like metal melting and high-temperature chemical reactions. For long-term use, it is recommended to operate within a slightly lower range (1290°C to 1350°C) to ensure the longevity and integrity of the crucible.
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Insulation and Mechanical Strength: The crucible's excellent high-temperature insulation properties help in maintaining the heat within the crucible, aiding in the efficient processing of materials. Additionally, its mechanical strength ensures that the crucible can withstand the physical stresses associated with high-temperature operations without cracking or breaking.
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Thermal Conductivity and Expansion: The large thermal conductivity of the crucible allows for more uniform heating, which is critical for consistent results in melting and other high-temperature processes. The low thermal expansion means that the crucible is less likely to crack or deform when subjected to rapid or uneven heating, which is particularly important in environments where temperature changes are not too fast.
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Application Environment: This crucible is particularly suited for stable environments where temperature changes are moderate. This stability is crucial for maintaining the integrity of the crucible and ensuring the accuracy and repeatability of high-temperature processes.
In summary, the 85% alumina ceramic crucible is a robust and reliable tool for high-temperature applications, offering excellent performance in a range of conditions, provided the temperature fluctuations are not too extreme.
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