Structure en céramique d'oxyde d'aluminium avec un trou creux à l'autre extrémité

Céramiques d'alumine occupy an important position in the field of precision manufacturing because of its high hardness, high temperature resistance, corrosion resistance and strong insulation.

Structural design and material advantages

1. core structure features
   Main body shape: cylindrical base, one end of which is extended with a slender cylindrical structure (extended column), and the other end is designed as a hollow hole (blind hole or through hole).
   Size range: the diameter covers 1mm-200mm, the length of extension column can reach 3 times of the base diameter, and the ratio of hollow hole depth to diameter can be adjusted.
   Surface accuracy: through CNC machining and polishing, the surface roughness Ra ≤ 0.2 μ m, and the coaxiality error of the extension column ≤ 0.01mm.
2. material performance advantages
   High hardness and wear resistance: Mohs hardness is grade 9, bending strength ≥ 350Mpa, and wear resistance is more than 10 times that of metal. It is suitable for high-frequency friction scenarios.
   High temperature resistance and thermal stability: the melting point is 2072 ℃, which can be used for a long time at 1600 ℃, and the thermal expansion coefficient (7.2 × 10 ⁻ ⁶ / ℃) is only 1/3 of the metal, reducing the risk of thermal deformation.
   Corrosion resistance and insulation: excellent resistance to acid, alkali, salt and organic solvents, volume resistivity > 10 ¹⁴ Ω· cm, meeting the requirements of high voltage insulation.
   Biocompatibility: according to ISO 10993 biosafety standard, it can be used for medical implants or contact devices.
3. typical design cases
   Case 1: a ceramic structure with a diameter of 50mm, an extension column length of 150mm and a hollow hole depth of 30mm is used for the wafer transfer arm of semiconductor equipment to solve the positioning deviation of metal parts due to thermal expansion.
   Case 2: the ceramic nozzle with a diameter of 10mm, an extension column length of 20mm and a hollow hole through-hole design is applied to the 3D printing fused deposition head to improve its high temperature resistance and anti blocking performance.

Application scenario: solve the core pain points of the industry

1. semiconductor manufacturing: wafer transmission and vacuum environment adaptation
   Problème : the metal transfer arm is prone to thermal expansion in the high-temperature plasma environment, resulting in wafer positioning error > 0.1mm and decreased yield.
   Solution : the coefficient of thermal expansion of ceramic structural parts is low, and the extension column and hollow hole realize zero thermal deformation transmission through precise coordination. The actual measurement in a wafer factory shows that the equipment failure rate is reduced by 60% and the wafer alignment accuracy is improved to ± 0.005mm after using the structure.
2. new energy field: lithium battery electrode cutting and electrolyte protection
   Problème : the metal cutter is easy to wear out in high-speed friction, and the electrolyte corrosion causes the service life of the cutter body to be less than 1000 hours.
   Solution : the ceramic structure extension column is used as the cutting edge, with high hardness and electrolyte corrosion resistance, and the service life is extended to more than 5000 hours. At the same time, the hollow hole design can be filled with cooling gas to reduce the cutting temperature and reduce the electrode burr.
3. Aerospace: lightweight and radiation resistant components
   Problème : the spacecraft manipulator needs to work in the temperature range of -100 ℃ to 200 ℃, the metal parts are prone to fatigue fracture, and the increase of weight affects the payload.
   Solution : the density of ceramic structural parts is only 1/3 of that of metal. The combination design of extension column and hollow hole realizes the lightweight of the structure. In the Mars probe sampling manipulator, the structure reduces the overall weight by 25% and improves the radiation resistance by 3 times.
4. medical instruments: core components of minimally invasive surgical instruments
   Problème : traditional metal surgical forceps are easy to cause rejection reaction of patients, and the surface wear releases metal ions after long-term use.
   Solution : the ceramic structure has excellent biocompatibility. The extension column is used as the jaw clamping part, and the hollow hole can be integrated with a sensor or a drug delivery channel. In neurosurgery, the structure achieves micron operation accuracy, and the incidence of postoperative inflammation is reduced by 80%.
5. precision measurement: high precision positioning and calibration
   Problème : metal standard parts are easy to deform under the change of temperature and humidity, resulting in measurement error > 0.01mm.
   Solution : the ceramic structural parts have strong dimensional stability. The extended column is used as the calibration rod, and the hollow hole can be embedded into the laser reflector to achieve nano positioning. In the calibration of optical instruments, the structure reduces the repeated measurement error to ± 0.001mm.

Customized service: whole process support from design to mass production

1. demand analysis and scheme design
   Structure Customization: adjust the length, diameter and taper of the extension column, as well as the depth, diameter and thread of the hollow hole according to the application scenario.
   Material optimization: provide selection of pure alumina (al‹o ₃ content ≥ 99.7%) or zirconia toughened alumina (ZTA) and other composite materials to balance hardness and toughness.
   Function integration: it supports embedding metal electrodes, optical fibers or sensors in hollow holes to realize conductive, light guiding or signal transmission functions.

The aluminum oxide ceramic structure with an extended column at one end and a hollow hole at the other end solves the core problems of positioning accuracy, corrosion resistance and lightweight in the fields of semiconductor, new energy and medical treatment through the combination of structural innovation and material advantages. Relying on the customized service capability, the product can quickly adapt to the needs of different scenarios and become the key support for the upgrading of high-end equipment.

Brudeze Ceramics fournit et vend une large gamme de verre de quartz de haute qualité, y compris des céramiques d'alumine, des céramiques de zircone, des céramiques de nitrure de silicium, des céramiques de nitrure d'aluminium, des céramiques de carbure de silicium, des céramiques de carbure de bore, des biocéramiques, des céramiques usinables, etc. Nous pouvons répondre aux exigences de personnalisation de divers produits céramiques.