MoSi2 Heating Elements 1700°C 1800°C 1850°C 1900°C
Mosi2 Heating Element
Application
Widely used in research and production of glass, ceramic, refractory, metallurgy, steel-making, crystal, electronic parts, semiconductor material.
FAQ
MoSi2 Heating Elements Require Special Care
If your furnace uses Molybdenum Silicide, it forms ceramic quartz on the outer surface of the restoration that interacts with green state colorants. Over time, the melting point of this quartz becomes lower than the top temperature of the sintering cycle and this creates pollution in the furnace chamber. As a result, these pollutants can cause greening or darkening of the restorations. In order to prevent this you should always use a covered crucible. This will reduce the likelihood of chamber pollution getting into the restoration.
The quartz pollution can have an effect on the thermocouple over time, about 6 to 12 months. The thermocouple will send lower temperature readings to the control panel resulting in firing temperatures of up to 100° higher than programmed.
From room temperature to 900°C, there is little effect on the restorations. The ramp rate from 900° to top temp, from top temp to hold time, consistency of temp through the hold, and then rate of cool back to about 900° are all critical.
Not adequately drying colorants added to green state colored zirconia prior to sintering will shorten MoSi2 heating element and add to the pollution problem in sintering furnaces.
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