Diamond Polished Technical Y2O3 ZrO2 Zirconium Oxide / Zirconia
Ceramic Bush
Description of zirconia ceramic bush:
Zirconia (ZrO2) is an extraordinary refractory technical ceramic
material. It possesses excellent chemical inertness and corrosion
resistance at temperatures up to 2200℃, well above the melting
point of alumina. Zirconia is stabilized in the cubic crystal
structure to avoid cracking and mechanical weakening during heating
and cooling. So it's easier to proceed with high precision
processing. In addition to their refractoriness, they offer low
thermal conductivity and are electrical conductors above 800 ℃.
They also possess the unique ability to allow oxygen ions to move
freely through the crystal structure above 600 ℃.
Zirconia ceramic bushes have the advantages of super hardness, high
wear-resisting, good corrosion resistance, high-temperature
tolerance, high strength, high mechanical strength, good chemical
stability, polishing surface and so on.
Benefits of zirconia ceramic bush:
1. High precision dimensions, it can fit with other parts perfectly
2. Higher density than most of technical ceramics, over than 6 g/cm3
3. Excellent wear resistance, much higher 276 times than stainless
steel
4. High hardness, over than 1300 MPa for Vicker
5. Can withstand higher temperatures up to 2400°
6. Low thermal conductivity, less than 3 W/m.k at room temperature
7. Similar coefficient of thermal expansion as stainless steel
8. Exceptional fracture toughness reaches up to 8 Mpa m1/2
9. Corrosion resistance, withstand strong acid and alkali in
high-temperature conditions
10. Resistance to molten metals due to an extraordinary melting
point
Specification of the ceramic bush:
| Material available | Zirconia (ZrO2), Alumina(Al2O3), Silicon carbide(SiO2), Silicon
nitride(Si3N4) |
| Forming methods | Dry pressed, Ceramic injection molding, Hot pressed, ISO pressed |
| Available types | Flanged tubes, slotted tubes, one-end closed tubes, square tubes |
| Specification | OD can be from 1 to 50mm, length can be from 10mm to 500mm |
| Precision processing | CNC machining, Precision grinding, Polishing, Lapping, |
| Tolerance | The tolerance of OD and ID can be 0.001mm, the tolerance of length
can be 0.001mm |
| Surface quality | Free of cracks, foreign contamination, mirror surface better than
Ra0.1 |
| Key parameters | Roughness to be 0.02mm, Parallelism to be 0.001mm |
Gallery of zirconia ceramic components
We produce various zirconia ceramic components in different
materials with a special design.
Datasheet of Technical ceramics
| Property | Units | Material |
| 99.5% alumina | 99%alumina | 95% alumina | ZrO2
(Y-TZP) | ZrO2 (TTZ) |
| Density | g/cm3 | ≥3.85 | ≥3.80 | ≥3.60 | ≥5.95 | ≥5.72 |
| Water absorption | % | 0 | 0 | 0 | 0 | 0 |
| Hardness | HV | 1700 | 1700 | 1500 | 1300 | 900 |
| Flexural strength | Mpa | ≥379 | ≥338 | ≥320 | ≥1200 | ≥1200 |
| Compressive strength | Mpa | ≥2240 | ≥2240 | ≥2000 | ≥1990 | 1750 |
| Fracture toughness | Mpa m1/2 | 4-5 | 4-5 | 3-4 | 6.5-8 | 11 |
Max. service
temperature | ℃ | 1675 | 1600 | 1450 | 1000 | |
| CTE | 1×10 -6 /℃ | 6.5~8.0 | 6.2~8.0 | 5.0~8.0 | 8.0~9.5 | 10.2 |
| Thermal shock | T(℃) | ≥250 | ≥200 | ≥220 | ≥300 | 350 |
| Thermal conductivity(25℃) | W/m.k | 30 | 29 | 24 | 3 | 3 |
| Volume resistivity | ohm.cm | | | | | |
| 25℃ | ＞1 x 10 14 | ＞1 x 10 14 | ＞1 x 10 14 | ＞1 x 10 11 | ＞1 x 10 11 |
| 300℃ | 1 x 10 12 | 8 x 10 11 | 10 12 -10 13 | 1 x 10 10 | 1 x 10 10 |
| 500℃ | 5 x 10 10 | 2 x 10 9 | 1 x 10 9 | 1 x 10 6 | 1 x 10 6 |
| Insulation strength | KV/mm | 19 | 18 | 18 | 17 | 20 |
| Dielectric constant(1Mhz) | (E) | 9.7 | 9.5 | 9.5 | 29 | 28 |
Manufacturing flow chart of technical ceramic parts
We have in-housing comprehensive manufacturing types of equipment,
including forming, sintering, CNC machining,
precision grinding, laser cutting and so on, it helps us to control
the quality very well, also it greatly benefits cost control.
Packaging proposal and transportation solutions
1. We will keep the ceramic parts inside the inner package to be
fixed without moving, then it will prevent them from collision each
other,
to avoid any cause any chippings during transportation.
2. In addition, the inside of the outer carton will be filled with
sufficient protective kinds of stuff.
Why choose us?
★ 10+ Years of manufacturing experience in OEM, ODM ★ Powerful R&D,
mass production capability
★ In-house comprehensive manufacturing types of equipment ★
Rigorous quality control system and processes
★ Surpassing pre-sales and after-sales service ★ Abide all orders
as the first priority
FAQs(Frequently asked questions)
Q1. Are you a factory or trading company?
A: We are a manufacturer. You are welcome to visit our factory.
Q2: Do you send a sample to check?
A: Sure, the sample is free and freight collect.
Q3: When will you ship it?
A: If the products are in storage, we'll ship within 48 hours
Q4: When can I get the price?
A: We regularly quote within 24 hours after we get your inquiry. If
you are in urgent need of getting the price.
Please call us or tell us in your email so that we will proceed
with your inquiry as a priority.
Q5: Is it available to provide customized products?
A: We always support custom-made demand as per different materials,
dimensions, and designs.
Q6: How to ensure quality?
A: The dimension out of any batch will be carried out sampling
inspection per international AQL standard. A 100% cosmetic
inspection will be done.
Q7: What other products are you dealing with?
A: We focus on a variety of ceramic tubes, ceramic substrates,
ceramic sheets, textile ceramics besides metalized ceramics.
