30ML Zirconia Rotors with Zirconia Caps / Ceramic Tubes with Inside
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Manufactured from the highest purity Zirconia, our zirconia Rotors
provide the NMR spectroscopist with the ultimate alternative for
analysis of solid samples. The need to solvate solid samples is
eliminated. They are available for most of the present solid state
NMR spectrometers.
Our Zirconia Rotors and zirconia caps are carefully examined for material irregularities by various
methods before and after the precision machining process.
High precision (which becomes a necessity for proper spinning
performance) is maintained in the manufacture of the end caps. Most
Zirconia end caps are fitted with o-rings for better sealing. Some
caps have axial holes for venting.
Mingrui Ceramic utilize super-precision, wear-resistant ceramic
stators of silicon nitride or zirconia. MAS spinner materials must
be chosen carefully based on background signals and temperature
ranges. Zirconia rotors and caps of various materials are available to provide fast spinning with
limited background problems.
About Zirconia Ceramics :
Zirconia materials are used in very high wear applications under
very high pressure requiring improved fracture toughness and
stiffness over alumina. Zirconia is noted for its high strength,
toughness, wear and thermal properties. Its high material cost
usually warrants its usage extending longer life and reduce down
time where alumina fails in this applications.
During manufacture, the zirconia powder is combined with oxides
such as Yttria, magnesia or tetragonal and the material is said to
be partially stabilised or even it can be fully stabilised if
required, varying the composition allows different properties to be
enhanced.
Yttria (Y-PSZ) stabilised zirconia are mainly used for excellent
wear resistance up to 400’C temperature while Magnesia (MgO-PSZ)
zirconia are very good at high temperature offering excellent
thermal shock and also wear resistance. Y-TZP Zirconia material has
tetragonal in structure and has the highest flexural strength of
all the zirconia based materials. The fine grain size of Y-TZP
lends itself to be used in cutting tools where a very sharp edge
can be achieved and maintained due to its high wear resistance. The
fine grade size leads to a fully dense with excellent mechanical
strength, corrosion resistance, impact toughness, thermal shock
resistance and very low thermal conductivity.
Advantages of Zirconia Ceramics
- High strength
- High toughness
- Excellent wear resistance
- High hardness
- Low thermal conductivity
- Good chemical and corrosion resistanc
Applications of Zirconia Ceramics
- Various wear parts for wear applications
- Valves and pump components
- Ceramic plain, balls and roller bearings
- Tubes, fixtures etc. for High temperature
- Copper tube extruding & reducer dies
- Thermal insulation components
- Wear resistance and Cutting blades
- Ceramic knives
- Grinding media
Properties of Ziroconia Materials
| Magnesia ZrO2+MgO | Yttria ZrO2+Y2O3 | Tetragonal ZrO2+ YTZP | Toughened ZrO2+Al2O3 |
|---|
| Density- g/cm3 | 5.70 | 6.02 | 6.04 | 5.5 |
| Water Absorption-% | 0.00 | 0.00 | 0.00 | 0.0 |
| Compressive strength-Mpa | 1700 | 2000 | 4000 | 2000 |
| Flexural Strength – Mpa | 600 | 950 | 2500 | 1800 |
| Fracture Toughness- Mpa.m1/2 | 8-9 | c | 10 | 8 |
| Young Modulus-Gpa | 250 | 205 | 210 | 220 |
| Max. Temperature °C | 1000 | 1000 | 1000 | 1000 |
| Thermal Conductivity-W/m’K | 2.5 | 2.0 | 2.0 | 6.0 |
| Thermal Expansion of Coefficient linear -10-6/°C | 10.0 | 10.0 | 11.0 | 9.0 |
| Volume resistance – Ohm cm | 1010 | 1010 | 107 | n/a |
| Dielectric Constant 1MHz | 28 | 8.3 | 2.4 | n/a |
| Dielectric Strength – kV/mm | 9.0 | 9.0 | 8.7 | n/a |
| General Characteristics of Materials: |
| Characteristic | Ceramics | Metals | Polymers | Refractory |
| Density | Low to High | Low to High | Low | Low to Medium |
| Hardness | High | Medium | low | Medium |
| Toughness | low | High | Medium | low |
| Wear Resistance | High | Medium | low | Medium |
| Tensile Strength | Low to Medium |
High | low | low |
| Compressive Strength | High | Medium to High | low to Medium | High |
| Young’s Modulus | Medium to High | Low to High | Low | Medium |
| Dimensional Stability | High | low to Medium | low | / |
| Thermal Expansion | Low to Medium | Medium to High | High | low |
| ThermalConductivity | Medium | Medium to High | Low | Medium |
| Thermal Shock | Low | Medium to High | High | low to Medium |
| Electrical Resistance | High | low | High | / |
| Chemical Resistance | High | low to Medium | Medium | / |
| Oxidation Resistance | Medium to High | low | low | / |
| Machinability | Medium | low | Medium | / |
| Product Name | 30ML Zirconia Rotors with Zirconia Caps / Ceramic Tubes with Inside
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| Material | zirconia ceramic |
| Color | white or black or customed |
| Standard | according the request of customer |
| Grade | first class |
| Brade | Rock |
| Thread | coarse, fine |
| Use |
FAQ
Q: Are you trading company or manufacturer ?
A: We are factory.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is
15-20 days if the goods are not in stock, it is according to
quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay
the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30%
T/T in advance ,balance before shippment.
If you have any other question, pls feel free to contact us .
