Zirconia Ceramic Thin Small Tube
Zirconia ceramic fine tube (also known as zirconia micro tube, capillary tube, or small-diameter zirconia tube) is a high-precision advanced ceramic component made from high-purity yttria-stabilized zirconia (Y-TZP / YSZ). It features ultra-fine dimensions, exceptional toughness, and superior performance in extreme environments. Manufactured using cold isostatic pressing, high-temperature sintering, and precision fine polishing (inner/outer bore), it is ideal for applications requiring micro-scale accuracy, high wear resistance, and chemical/thermal stability.
Key Features:
- Superior toughness & strength: Fracture toughness ≥8–10 MPa·m¹/², flexural strength ≥1000 MPa — highly resistant to cracking in thin-wall structures
- Excellent wear & abrasion resistance :Hardness HRA ≥88, inner surface ultra-smooth after fine polishing, far outperforms alumina or metal capillaries
- Outstanding corrosion & chemical resistance: Inert to strong acids, alkalis, molten metals, and most aggressive media
- High temperature & thermal shock resistance: Max service temperature up to 2200°C+, low thermal expansion, excellent thermal stability for rapid cycles
Technical Specifications:
| Parameter | Typical Value | Unit |
|---|---|---|
| Material | Yttria-stabilized Zirconia (Y-TZP / 3–8 mol% Y₂O₃) | — |
| Density | ≥6.0 | g/cm³ |
| Hardness | ≥88 | HRA |
| Flexural Strength | ≥1000 | MPa |
| Fracture Toughness | ≥8–10 | MPa·m¹/² |
| Max Service Temperature | 2200 | °C |
| Color | White | — |
| Outer Diameter (OD) Range | 0.5–10 (fine series focus 0.8–4 mm) | mm |
| Inner Diameter (ID) Range | 0.3–8 (capillary down to ~0.3 mm) | mm |
| Wall Thickness | 0.1–2 (ultra-thin available) | mm |
| Length Range | 5–300 (longer on request) | mm |
| Tolerance (OD/ID) | ±0.05 to (precision grade) | mm |
| Surface Finish (ID) | Ra ≤0.1–0.2 µm (fine polished) | — |
Main Application Areas:
- Precision Fluid & Gas Control: Micro nozzles, capillary for precise fluid dispensing, chromatography, medical dosing pumps
- Medical & Analytical Instruments: Thermocouple protection sheaths, micro sampling tubes, dental/medical precision channels, lab-on-chip components
- Electronics & Sensors: Insulating micro-tubes, oxygen sensor housings, high-voltage feedthroughs, fiber optic alignment sleeves
- High-Temp & Research: Furnace thermocouple tubes, micro-reactor liners, plasma & laser equipment guide tubes
Frequently Asked Questions
Q1: How does zirconia fine tube compare to alumina or glass capillary tubes?
A: Zirconia provides 3–5× higher fracture toughness and far better impact/thermal shock resistance than alumina; much higher durability than glass. Ideal when brittleness or chemical attack is a concern, though at higher cost and density.
Q2: What are the smallest sizes and tightest tolerances available?
A: We offer OD as small as 0.5 mm, ID down to ~0.3 mm with wall thickness 0.1 mm+. Standard tolerance ±0.01 mm.Ultra-fine/long specs — please confirm feasibility based on aspect ratio.
If you need exact dimensions (OD/ID/length), surface finish (mirror polish ID/OD), special tolerances, batch quantity, or samples, please provide details — we offer fast customization and technical support!
