Quartz Plate
Overview of Quartz Plate
A Quartz Plate refers to a flat product made from quartz glass. Below is detailed information regarding this material:
Material Properties
- High Purity: The primary constituent is silicon dioxide (SiO₂), typically achieving a purity level of 99.99% or higher, with extremely low levels of impurities. This attribute provides excellent chemical stability and strong physical characteristics.
- High Temperature Resistance: Quartz plates can endure elevated temperatures while retaining stable physical and chemical properties. The softening point is approximately 1730°C, and they can be used continuously at around 1100°C, making them ideal for high-temperature experiments and industrial applications.
- Corrosion Resistance: They exhibit good resistance to most acids (excluding hydrofluoric acid), bases, and other chemical substances, making them suitable for use in laboratory and production equipment within the chemical and pharmaceutical industries.
- High Transparency: Quartz plates have excellent light transmission across ultraviolet, visible, and infrared wavelengths. Notably, their transmittance in the ultraviolet range is significantly higher than that of standard glass, making them ideal for optical instruments and UV detection applications.
- Good Thermal Stability: With a very low coefficient of thermal expansion, quartz plates maintain dimensional stability during rapid temperature fluctuations and are less likely to crack due to thermal expansion and contraction. They are extensively used in precision optical and electronic devices.
- Piezoelectric Effect: When cut in specific orientations, quartz plates exhibit a piezoelectric effect, meaning that mechanical stress applied to them generates electrical charges on their surface. Conversely, applying an electric field causes mechanical deformation. This property is crucial in electronic components such as oscillators and filters.
Common Specifications
- Thickness: Typically ranges from 1mm to 100mm, and specific thicknesses can be customized based on individual requirements.
- Diameter: The common diameter spans from 8mm to 500mm. Additionally, they can be processed into various shapes and sizes (circular, square, rectangular, etc.) according to customer specifications.
Application Fields
- Laboratory Use: Quartz plates serve as high-temperature and corrosion-resistant laboratory vessels, acting as bearing plates in high-temperature furnaces or as resistant pads in chemical reactions. They can also be utilized to create high-precision optical experimental devices, such as cuvettes and spectrometer windows.
- Optical Instrumentation: Due to their exceptional optical properties, quartz plates are frequently used to manufacture optical components like lenses, prisms, and filters. They also function as light-transmitting windows in UV imaging and infrared detection equipment, ensuring optimal light transmission and imaging quality.
- Electronic Communication: Leveraging their piezoelectric properties, quartz plates can be formed into quartz crystal oscillators that provide stable clock signals for electronic devices. In optical communication systems, precision quartz wave plates can create phase delays for optical signals, manage light polarization states, and achieve high-precision polarization management.
- Chemical Industry: Used in the production of corrosion-resistant pipes and sight glasses for reaction vessels, quartz plates ensure the smooth operation and monitoring of equipment in chemical processes involving corrosive environments like strong acids and bases.
- Aerospace Applications: Due to their high-temperature resistance, excellent thermal stability, and lightweight nature, quartz plates are used to manufacture components for aircraft engines, optical windows, and electronic parts in space detectors.
Processing and Treatment
- Cutting Processing: Precision cutting equipment is employed to tailor quartz plates to specific sizes and shapes based on application needs, with techniques such as laser cutting and diamond cutting ensuring edge precision and flatness.
- Grinding and Polishing: To achieve the desired optical performance, the surface of quartz plates is ground and polished to minimize roughness, enhance flatness and finish, and reduce light scattering and reflection losses.
- Surface Treatment: Occasionally, the surfaces of quartz plates undergo treatments such as coating to enhance particular optical attributes. In specific applications, quartz plate surfaces may also be metallized to fulfill specific electrical functions.
Research Progress
- Vibration Characteristics Research: Researchers have focused on the equations governing thickness-shear and bending vibrations of quartz crystal plates, taking into account geometric and material nonlinearities. By applying the extended Galerkin method for transformation and solution, they have derived the frequency response relationship between strongly coupled thickness-shear and bending vibration modes, aiding in the optimization of devices such as quartz crystal resonators.
- Twin Control Research: The method of laser beam scanning is utilized to control the artificial twinning of quartz plates. By depositing a metal film on the quartz surface and locally heating it to induce mechanical stress, x-axis reversal (twinning) is achieved, enabling the creation of new piezoelectric and/or optical devices.
- Micro-Pump Applications Research: Based on the photoacoustic laser flow principle, a micro-pump without moving parts is created using a gold-infused plasma quartz plate. Under pulsed laser excitation, any point on the plate can generate directional and sustained ultrasonic waves, driving fluid flow via acoustic motion, thus opening new avenues for microfluidic applications.