A crucible is a container used to protect and support ceramics, metals, or other materials at high temperatures. It is typically made of refractory materials such as ceramic, graphite, or alloys, capable of withstanding high temperatures without cracking or deforming. During sintering or firing processes, crucibles are used to encase and isolate the materials being processed, preventing direct contact with the furnace interior and protecting the furnace from contamination or oxidation by the materials. Crucibles（sagger） can be classified into several types based on their materials and applications:
Ceramic crucibles(sagger): Made from ceramic materials, typically used in chemical experiments and melting processes at high temperatures.
Graphite crucibles(sagger): Made from graphite materials, known for their high-temperature resistance and chemical stability, commonly used in metal melting and heat treatment processes.
Metal crucibles(sagger): Made from metal materials, suitable for high-temperature metal melting and alloy preparation.
Quartz crucibles(sagger): Made from quartz glass materials, known for excellent high-temperature resistance and chemical stability, often used in high-temperature experiments and chemical analysis.
Each type of crucible has specific advantages and applications, and choosing the appropriate type based on specific usage requirements and material characteristics is crucial.
Crucibles and evaporating dishes, as vessels used for high-temperature experiments and material processing, depend on the material type and manufacturing process for their heat resistance capabilities. Generally, fused quartz crucibles and alumina ceramic crucibles can withstand temperatures of over 1300 degrees Celsius, suitable for various high-temperature melting and chemical reactions. Graphite crucibles, known for their high heat resistance, can withstand temperatures up to 2500 degrees Celsius and are commonly used in experiments and processes requiring extremely high temperatures. Metal crucibles, depending on the specific metal type, have varying temperature resistance ranges and are used for specific high-temperature treatments and alloy melting. Evaporating dishes exhibit similar high-temperature stability in experiments and specialized treatments. When choosing, consideration of the material's heat resistance and chemical properties is crucial to ensure the vessel can safely and reliably withstand the required high-temperature environments.
Crucibles and saggars are containers used for high-temperature chemical reactions or metal melting, categorized into various types based on application requirements and material selection. Crucibles include porcelain crucibles, graphite crucibles, silica crucibles, and alumina crucibles, each suitable for different temperature ranges and chemical environments. Saggars encompass clay saggars, alumina saggars, silicon carbide saggars, and metal saggars, utilized for firing ceramics in kilns, high-temperature ceramic processes, and firing processes in the glass industry. Choosing the appropriate crucible or saggar ensures optimal performance and durability in various high-temperature applications.
A crucible (坩埚) and a saggar (匣钵) are containers used for chemical reactions or melting metals at high temperatures. Typically made from refractory materials such as ceramics or graphite, they possess properties of high temperature resistance and chemical stability. Crucibles are usually round with a wide base and a narrow top, aiding in uniform heating and control of molten materials. Crucibles and saggars are commonly employed in laboratories, industrial production, and metal smelting for high-temperature treatments and chemical reactions.