Y₂O₃ (Yttrium Oxide) Transparent Ceramic
Keywords:
Scintillation Crystals
- Product Introduction
- Key advantages
- Application areas
- Product Features
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- Commodity name: Y₂O₃ (Yttrium Oxide) Transparent Ceramic
Y₂O₃ (Yttrium Oxide) transparent ceramic features a cubic structure, high melting point, excellent chemical and photochemical stability, wide optical transparency range, low phonon energy, and facile doping with rare-earth ions.
Product Introduction
Y₂O₃ (Yttrium Oxide) transparent ceramic features a cubic structure, high melting point, excellent chemical and photochemical stability, broad optical transparency range, and low phonon energy, making it easy to incorporate rare-earth ion dopants. It exhibits outstanding plasma resistance, making it an ideal choice for semiconductor processing equipment applications where particle contamination must be strictly avoided—since it reduces equipment maintenance needs, ultimately boosting productivity.
Yttria-based transparent ceramics exhibit optical properties with isotropic behavior along all axes, offering sharper, less-distorted images compared to the anisotropic nature of translucent alumina. As a result, these materials are increasingly being recognized and developed for advanced lenses and military optical windows—making them a highly valuable functional material with significant practical applications. They hold promising potential in high-temperature window applications, infrared head covers, luminescent media (such as scintillation, lasers, and upconversion luminescence), and the semiconductor industry. Today, they have even emerged as viable alternatives to single-crystal materials.
Key Advantages
- High melting point, with excellent chemical and photochemical stability
- Optically transparent over a wide range
- With a refractive index as high as 1.89, it achieves a theoretical transmittance of over 80%.
- Low phonon energy
- High thermal conductivityApplication Areas
- Low-emission materials
- Semiconductor equipment
- The missile's infrared window and dome
- Etch chamber, focusing ring
- Visible and Infrared Lenses
- High-pressure gas discharge lamp
- In fields such as ceramic scintillators and ceramic lasersProduct Features
Material Properties
Flexural Strength
140 MPa
Dielectric Constant
11(1 kHz –1 MHz)
Density
5.7 g/cm³
Mohs Hardness
8.5 Mohs
Transparency Range
250–8000 nm
Transmittance
83.7%@532 nm
Fracture Toughness
1.1 MPa·m⁻¹/²
Young's Modulus
160 GPa
Dielectric Strength
19.3kV/mm
Refractive Index
1.89@1050 nm
Chemical Corrosion Resistance
Excellent
Plasma Corrosion Resistance
Excellent
Melting Point
2430°C
Product Processing Indicators
Effective Aperture
>90%
Dimensions
Customized to Customer Specifications
Diameter Tolerance
+0/-0.05 mm
Length Tolerance
±0.1 mm
Chamfer
≤0.3×45°
Surface Quality
40-20 S-D
Flatness
≤λ/6@632.8 nm
Parallelism
<20"
Perpendicularity
≤15′
Chipped Edge
<0.1 mm
Coating
Customized to Customer Specifications
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- Excellent transparency and infrared light transmittance
- Resistance to alkali metal vapor corrosion
- High melting point, high thermal conductivity
- Lower theoretical density, high insulation -
- Manufacturing infrared windows and fairings for spacecraft, rockets, and missiles,
- High-temperature furnace infrared windows, high-temperature infrared optical devices
- Optical filters and optical detectors
- Key materials for high-pressure sodium lamp tubes and infrared detector housings -
Material Properties Crystal structure Cubic Dielectric constant (1 kHz – 1 MHz) 9.65 Density 3.58g/cm3 Hardness 6.8 (Mohs) Optical transmission >90% @ (200–1000 nm) Lattice constant (Å) 4.130 Å Purity 99.95% Flexural Strength (MPa) 134MPa Refractive index 1.736 Coefficient of thermal expansion 11.2 × 10⁻⁶ (/°C) Thermal conductivity (W/m-K) 36 W/m-K at 300 K Melting point 2800°C Product Processing Metrics Effective Aperture >90% Dimensions Customized to customer specifications Diameter Tolerance +0 / -0.05 mm Length Tolerance ±0.1 mm Protective Chamfer ≤0.3 × 45° Surface finish 40-20 S-D Flatness ≤λ/6 @ 632.8 nm Parallelism <20" Verticality ≤15′ Chipped edge <0.1 mm Coating Customized to customer specifications
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