Thermal spraying material of insulation coating mainly is series of alumina ceramic material. This material’s resistivity is high. Its dielectric constant can reach 12 and dielectric strength can reach 1069V/ 0.1mm at most. When the thickness is less than 1mm, it can withstand voltage 2500V under the temperature of 1300℃. It meets the requirements of electric insulation under the high temperature. And at the same time, this material has excellent performance of high hardness, good wear resistance, high temperature resistance and corrosion resistance etc.
1. Insulation shell of bearing, motor rotor insulation bearing guard etc.
2. In the electronics industry, Al2O3 ceramic coating as integrated circuit’s substrate and high-performance. encapsulating material, America has could sprayed 25*25 dielectric ceramic composite circuit board and achieves scale production.
1. Al2O3: White coating, the highest dielectric strength.
2. AT3（Al2O3/TiO2 97/3）：灰色涂层，涂层致密。