Model:w type
MoSi2 heating elements physics and chemistry characters:
1. Physics Characters
Volume Density | Bending Strength | Vickers Hardness | Porosity | Water absorption | Heating Elongation Rate |
5.5 g/cm3 | 15-25 kg/cm3 | (HV)570kg/mm2 | 7.4% | 1.2% | 4% |
2. Chemistry Character
MoSi2 heating element is used in the high temperature under oxidizing atmosphere. It will form the
SiO2 film which can keep the element from being melted. During the oxidizing process, the SiO2
protecting film is formed again when the element continues to be used. The MoSi2 heating element
must not be used in the temperature between 400C and 700C for a long time, otherwise the element
will be cremated under the strong oxidizing function in the low temperature.
3.Electric Character
1) Resistance property
The resistivity of element rapidly rises as the temperature rises, under normal operating
conditions, generally the element resistance doesn't change with the service time changing.
So the old and new elements can be mixed used.
