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Yttrias

Yttrias Overview

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Yttria is a form of Yttrium Oxide. This rare-earth ceramic exhibits both plasma resistance and an aptitude for high-temperature applications. Yttria is often used to stabilize other ceramic compositions like zirconia.

Pure yttria can be used in bulk and as coatings, for parts requiring exceptional corrosion-resistance. Applying a PlasmaResist™ coating to compatible ceramic and metal components can be used to create a corrosively inert barrier of pure yttria.

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

Ceramic Expertise

From engineering components out of bulk yttria to coating compatible materials, CoorsTek can engineer a solution to meet customer specifications.

Property Units Yttria

Y2O3

Flexural Strength MOR, (20°C)

MPa

430

Compressive Strength, (20°C)

MPa

-

Fracture Toughness, KIc

MPa m1/2

1.0-4.0

Hardness, Rockwell 45N

R45N

-

Hardness, Knoop 1000gm

GPa

-

Maximum Use Temperature

°C

2000

Coefficient of Thermal Expansion, (25-1000°C)

1 x 10-6/°C

7.9-8.2

Thermal Shock Resistance, (∆T)

°C

130

Thermal Conductivity, (20°C)

W/m K

10.0-14.0

Dielectric Strength, (6.35mm)

ac-kV/mm

420

Dielectric Constant, (1 MHz)

25°C

11.5-13.5

Volume Resistivity, (25°C)

ohm-cm

1014->1016

The information provided on this chart is for general material property reference only.  The customer should recognize that exact properties of materials may vary according to product configuration but close control of values of most properties can be maintained, if specified. Nothing herein is provided, or is to be construed, as absolute engineering data or constituting a warranty or representation. Contact CoorsTek for cost-effective design, development and manufacturing assistance. CoorsTek has 300+ variations including various forming and firing processes, not all variants are represented in the present website.

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