The influences of the PTCR's characteristic parameters such as switching temperature, room resistance of samples, and dissipation coefficient, etc. on the thermal power of heaters are investigated.

Titanium nitride coating has great application in industry owing to its superior properties, such as good wear and corrosion resistance, low friction coefficient and good thermal barrier properties.

In addition to good workability, high conductivity and low thermal expansion coefficient, it has excellent mechanical properties, excellent oxidation resistance and excellent thermal shock resistance.