3Y-TZP Zirconia Powder — 3 mol% Yttria-Stabilized Tetragonal Zirconia Polycrystal (Tosoh TZ-3Y Equivalent)
SEMITECH 3Y-TZP is a co-precipitated, spray-dried yttria-stabilized zirconia powder (3 mol% Y₂O₃ / 5.15 wt%) delivering transformation toughening with fracture toughness of 8–12 MPa·m^0.5 — the highest of any oxide ceramic. Equivalent to Tosoh TZ-3Y and TZ-3YS-E at 30–50% lower pricing with 7–14 day lead times.
Technical Specifications
| Parameter | Unit | Typical Value | Test Method |
|---|---|---|---|
| ZrO₂ + HfO₂ content | wt% | ≥94.5 | XRF (GB/T 26009) |
| Y₂O₃ content | wt% | 5.15 ± 0.20 | XRF |
| HfO₂ content | wt% | ≤2.0 | XRF |
| Al₂O₃ content | wt% | 0.25 ± 0.10 | XRF |
| SiO₂ | wt% | ≤0.02 | ICP-OES |
| Fe₂O₃ | wt% | ≤0.01 | ICP-OES |
| Na₂O | wt% | ≤0.04 | ICP-OES |
| Loss on ignition (1050°C) | wt% | ≤1.0 | Gravimetric |
| Median particle size d50 (spray-dried) | μm | 30–80 | Laser diffraction (ISO 13320) |
| Median particle size d50 (milled) | μm | 0.3–0.6 | Laser diffraction |
| BET specific surface area | m²/g | 7–15 | N₂ adsorption (ISO 9277) |
| Tetragonal phase content | % | ≥98 | XRD (Rietveld refinement) |
| Sintered density (1450°C / 2h) | g/cm³ | ≥6.05 | Archimedes method |
| Flexural strength (sintered) | MPa | ≥1000 | 3-point bend (ISO 6872) |
| Fracture toughness | MPa·m^0.5 | 8–12 | SEVNB / IF method |
| Vickers hardness | HV10 | 1200–1350 | ISO 6507 |
Application Suggestions
Dental Prosthetics — CAD/CAM Zirconia Crowns and Bridges
CIP-pressed into pre-sintered blanks, CAD/CAM milled, sintered at 1450–1530°C. Flexural strength ≥1000 MPa with ISO 10993 biocompatibility for posterior crowns, bridges up to 16 units, and implant abutments.
Structural Ceramics for Semiconductor Equipment
Plasma-resistant chamber liners, wafer handling arms, and alignment fixtures. Thermal shock resistance ΔTc ≈ 300°C and inertness to HF/HCl/fluorine plasma.
Optical Fiber Ceramic Ferrules
Ferrule bore concentricity ≤0.5 μm after sintering for <0.2 dB insertion loss. Milled-grade d50 0.3–0.6 μm optimized for ferrule injection molding.
Precision Valve and Pump Components
Ball valves, seats, and plungers for chemical processing — inert to strong acids (except HF), alkalis, and organic solvents.
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Technical Support & FAQ: 3Y-TZP Zirconia Powder
+Q1: How does SEMITECH 3Y-TZP compare to Tosoh TZ-3YS-E?
Matches on all critical parameters: Y₂O₃, Al₂O₃, d50, BET, sintered density. Independent XRD confirms ≥98% tetragonal phase. Side-by-side sintering trials show equivalent densification within ±10°C.
+Q2: What sintering profile is recommended?
Ramp 2–5°C/min to 1450°C, hold 2h, cool 2–5°C/min. The 0.25 wt% Al₂O₃ reduces sintering temperature ~100°C vs. alumina-free 3Y-TZP while inhibiting grain growth.
+Q3: Is this grade suitable for LTD-sensitive applications?
3Y-TZP is susceptible to low-temperature degradation at 100–400°C in humid environments. SEMITECH offers Ce-co-stabilized and alumina-toughened (ATZ) variants for LTD resistance.
+Q4: What are pricing and lead times?
7–14 days ex-works, 30–50% below Tosoh distributor list. MOQ 25 kg. Free 1 kg samples with full analytical package. Contact info@semitechnm.com.
Packing & Storage Information
25 kg kraft bags with PE liner, palletized. 500 kg FIBC for bulk. Store at <60% RH — hygroscopic powder agglomerates above 60% RH. Shelf life 24 months sealed.