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.