โมลิบดีนัมไดซัลไฟด์โมลิบดีนัมไดซัลไฟด์โมซิ 2 อุปกรณ์ทำความร้อน

U Type Molybdenum Disilicide Mosi2 Heater Mosi2 Heating Element

Physical and Chemical Properties
 
1. Physical Property  
2. Chemistry Property
Under high temperature, MoSi2 heating element will form one SiO2 protective film on the surface, which prevents the element from oxidizing continuously. When the element temperature is over 1700 °C, the film becomes melting. It's not suitable for long time use in the temperature range of 400-700°C, otherwise, the element will be powdering for the strong oxidation under low temperature.
 
3. The Influence of Different Atmospheres  
 
Electric Property
 
1. Resistance Property
The resistivity of element rapidly rises as the temperature rises. Under normal operating conditions, the element resistance generally doesn't change with the service life, so the old elements can be used with the new elements together.
 
2. Surface Load
Choosing element surface load based on furnace structure, temperature as well as atmosphere, is the key of optimizing element service life. The below picture shows the relationship among the furnace temperature, element temperature and surface load under the circumstance that thermal element radiation is not hindered. The shadow part is for common surface load and temperature range.
 
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