Chemically-, abrasion- and wear-resistant articles

from alumina ceramics containing 97% of Al2O3

Intended use:

electrical insulation in various devices, protection of metal components against abrasion injury, erosive wear, chemically aggressive substances: insulators, electrical connectors, nozzles, dies, grinding instrument, instrument casings, crucibles, lining plates, etc.

Characteristics:

• High dielectric strength – minimum 20 kv⁄mm;

• Lack of water absorption;

• High mechanical strength – 300 MPa;

• Wear resistance;

• Chemical resistance to acids and alkalies;

• Radioparency – ε = 9, tgδ = 10-4;

• High operating temperature – up to +1500°С.

from ceramics based on hot-pressed Si3N4

Intended use:

operating components for high-performance grinding equipment of ultrafine grinding.

Characteristics:

• Hardness - 92 - 96 HRC;

• Microhardness - 14 – 20 GPa;

• Bending strength – 500 – 1000 GPa;

• Impact strength 7000 – 8000 J/m3;

• Increase of high-energy grinding equipment operational life by 30-50 % through the substitution of hard-alloy operating components for ceramic ones.