Ceramic substrate ZTA

Innovacera’s Zirconia Toughened Alumina (ZTA) Substrates combine the superior strength of zirconia with the stability of alumina, offering excellent mechanical performance, high reflectivity, and outstanding resistance to thermal shock. With a dense white appearance and exceptional surface finish, these substrates ensure reliable operation in medium-power electronic and optical applications. Their robust toughness and precise machining capability make them an ideal choice for medium-power supply modules, LED lighting systems, and precision instruments. Features: - High strength - High reflectivity - High thermal shock resistance - Excellent processing performance Application: - Medium power supply module - Medium power LED - Instruments Material Properties Table: - Material: Al₂O₃/ZrO₂ - Appearance: White dense - Surface roughness: Ra 0.2~0.5 μm - Density: ≥3.85 g/cm³ - Bending strength: ≥550 MPa - Vickers hardness: ≥14 GPa - Water absorption: 0% - Thermal conductivity: ≥23 W/(m·k) - Linear thermal expansion coefficient: 6.6~7.5 x10⁻⁶ mm/°C - Thermal shock resistance: ≥10 times at 800°C - Specific heat: 720 J/(kg·K) - Dielectric constant: 10~11 (1MHz/25°C) - Dielectric loss: ≤3 x10⁻⁴ (1MHz/25°C) - Volume resistivity: >10¹⁴ Ω·cm (25°C) - Breakdown voltage: >15 KV/mm - Reflectivity: ≥95% Specifications and Dimensions: - Effective dimensions (A, B): 50.8-190 mm - Thickness (T): 0.25-1.5 mm - Thickness tolerance: ±5% (Min±0.03mm) - Warpage (C): ≤0.3% - Surface roughness: 0.2-0.5 μm - Size, thickness and surface roughness can be customized Processing: - Laser processing - Grinding and polishing sheet roughness table - Internal dimension tolerance: ±0.05mm - External dimension tolerance: ±0.15mm - Hole tolerance (φ0.07-0.15mm): ±0.05mm - Hole tolerance (φ > 0.15mm): ±0.1mm - Surface roughness (μm) - Grinding: 0.3-0.6 - Surface roughness (μm) - Fine grinding: 0.1-0.4 - Surface roughness (μm) - Polishing: ≤0.1 Technical Specifications / Characteristics: - Material: Zirconia Toughened Alumina (ZTA) - Appearance: White dense - Surface roughness: 0.2~0.5 μm - Density: ≥3.85 g/cm³ - Bending strength: ≥550 MPa - Vickers hardness: ≥14 GPa - Water absorption: 0% - Thermal conductivity: ≥23 W/(m·k) - Linear thermal expansion coefficient: 6.6~7.5 x10⁻⁶ mm/°C - Thermal shock resistance: ≥10 times at 800°C - Specific heat: 720 J/(kg·K) - Dielectric constant: 10~11 (1MHz/25°C) - Dielectric loss: ≤3 x10⁻⁴ (1MHz/25°C) - Volume resistivity: >10¹⁴ Ω·cm (25°C) - Breakdown voltage: >15 KV/mm - Reflectivity: ≥95% - Effective dimensions: 50.8-190 mm - Thickness: 0.25-1.5 mm - Thickness tolerance: ±5% (Min±0.03mm) - Warpage: ≤0.3% - Processing: Laser processing, grinding, polishing