Yttrium stablilized Zirconia cutter

Physical Properties

‌Density‌: 5.85–6.10 g/cm³, ‌melting point‌ up to 2715°C, ‌hardness‌ reaches Mohs 9, second only to diamond.

Exhibits ‌low thermal expansion coefficient‌ and ‌high resistivity‌, maintaining chemical inertness even at high temperatures.

Exists in three crystal forms (monoclinic, tetragonal, cubic), with adjustable crystal structures via stabilizers for diverse applications.

Mechanical Properties

‌Bending strength‌ ranges from 900–1200 MPa, with exceptional fracture toughness. ‌Phase transformation toughening‌ (e.g., tetragonal → monoclinic transition) enhances crack resistance.

Chemical Stability

Resistant to acids, alkalis, and corrosion; insoluble in water and most acids but soluble in hot concentrated sulfuric acid and hydrofluoric acid68.

Stable interaction with glazes at high temperatures, ideal for corrosive environments.

Electronic Applications

‌Nanocomposite zirconia‌ is used in 5G smartphone back panels (e.g., Xiaomi MIX series, Samsung Galaxy S10+), offering signal transparency, drop resistance, and metallic luster.

Biomedical Applications

‌Dental restorations‌: Full-zirconia crowns exhibit bending strength >1000 MPa and natural tooth-like translucency, suitable for anterior veneers and posterior crowns/bridges.

‌Orthopedic implants‌: Applications like artificial hip joints leverage its bio-inertness to minimize immune rejection.

Industrial Applications

‌Refractory materials‌: Withstands temperatures up to 2370°C, used in metallurgical furnace linings and glass-melting kilns.

‌Precision components‌: Fiber optic connectors and fuel cell parts rely on its dimensional stability