Yttria

Yttria Overview

Yttria (yttrium oxide, Y₂O₃) is a rare-earth ceramic which exhibits both exceptional plasma resistance and an aptitude for high-temperature applications. Yttria is often used to stabilize other ceramic compositions like zirconia.

CoorsTek Exyria™ yttria can be formed into both solid parts and coatings for parts requiring exceptional corrosion resistance. Applying a PlasmaResist™ coating to compatible ceramic and metal components creates a corrosively inert barrier of pure yttria.

• Plasma resistance
• High stability
• Heat resistance
• Various application methods

CoorsTek Formulations

Contact a CoorsTek expert to discuss a custom manufactured Yttria solution for your application.

Properties	Units	Value
Flexural Strength, MOR (20 °C)	MPa	100 - 430
Fracture Toughness, KIc	MPa m1/2	1.0 - 4.0
Thermal Conductivity (20 °C)	W/m K	10 - 14
Coefficient of Thermal Expansion	1x10-6/°C	7.9 - 8.2
Maximum Use Temperature	°C	2000
Dielectric Strength (6.35mm)	ac-kV/mm	16.5
Dielectric Loss (tan δ)	1MHz, 25 °C	4 x 10-4
Volume Resistivity (25°C)	Ω-cm	1014 to 1016