Quartz Crucibles, Fused Quartz Crucibles

Product Information

Fused quartz is made from the melting and refusing of crushed natural crystalline quartz. The low coefficient of thermal expansion of quartz provides excellent stability and resistance to thermal shock over large temperature excursions and wide thermal operating range. Fused quartz crucibles and boats are available in many sizes and shapes. ATT is offering a large portfolio of products with various dimension but is also happy to design specific geometries or shapes, including odd ratios between diameter and length even above 1:3. In addition, Quartz raw material purity is a parameter that can be adjusted in order to find the best compromise between cost and quality in the application. Lastly specific coatings can be put on the crucible surface thanks to a proprietary process in order to make its behavior more suitable to our customer’s needs.

Quartz is the name given to extremely pure silicon dioxide (SIO2) crystals. Crystal Quartz stone, also known as Quartz Crystal, can be found in many areas across the globe. It is a solid and hard mineral that forms more than 10% of the earth crust. Crystals are in the shape of hexagonal prisms when taken from the ground.Quartz is the mineral form of silica powder, and it is used in ceramic glazes, clay bodies, grog for added texture, quartz glass for instrumentation, connectors, pipes, valves, and more. It is often used to increase thermal expansion, and it is very resistant to both chemicals and heat making it a great option for many applications like optics. Optical-grade quartz crystals are used to make specialized lenses, windows and filters used in lasers, microscopes, telescopes, electronic sensors, and scientific instruments.

Quartz is used in components that require resistance to heat, corrosion, chemicals, and prevent contamination. Any parts that require precision, high-temperature resistance, or high-contamination control are great use-cases for quartz ceramics.Common quartz items that are often machined are containers, nozzles, quartz glass parts, quartz plates, rods, oscillators, optical-sensors, optical lenses, and more. Billions of quartz crystals are being used to make oscillators for watches, clocks, radios, televisions, computers, cell phones, meters, GPS equipment, and more.

we provide high purity fused quartz crucibles with a barium coating to meet the highest demands of the semiconductor industry. This proprietary coating is highly resistant to scratches which prevent potential issues during the loading step. It has an unlimited shelf-life and – unlike other barium coatings – does not hide any cosmetic defect in the inner surface of the crucible.

Synonyms

Silicon dioxide crucible, silicon(IV) oxide crucible, fused cast silica crucible

Fused Quartz Crucibles Specification

Size：customized

Purity: customized

Per your request or drawing

We can customized as required

Properties（Theoretical）

Applications of Fused Quartz Crucibles

• Automotive & Energy

• Precision Electronics

• Medical Devices

• Quartz Glass

• Precision Parts

• High-Temperature Parts

• Containers for Chemicals & Fluidics

• Parts for Contamination Control

• Mirror Substrates & Optical Parts

• Parts for Plasma Processes

• Parts for Light Sources

• Precious metals refining and special alloys manufacturing are among the oldest applications of quartz crucibles. These challenging markets require high-performance containers that can withstand without compromising the quality of the finished material. In some industries, bringing by diffusion impurities as low as 1 parts per million (ppm) could lead to the catastrophic rejection of products. ATT has an unmatched understanding of these challenging chemistries, routinely designing tailormade components for optimum usage in terms of melting cycles and lifetimes in precious metals and special alloy markets. Crystal growth is potentially the most well-known application of fused quartz crucibles; an area that is constantly growing due to the increasing demand for high-purity electronic substrates extracted from synthetically-grown silicon billets.

• Fused Quartz Crucibles Semiconductor grade silicon has an approximate melting point of 1425°C (2597°F), and this must be maintained throughout the Czochralski process as a seed crystal mounted on a rod is dipped into the molten mix and drawn up out of the crucible. Fused quartz crucibles are one of the only suitable components for the Czochralski method of growing single crystal silicon ingots, owing to their negligible expansion properties and superb resistance to thermal shock. Quartz crucibles also benefit from the additional characteristic of being non-conductive, with a nominal resistivity of 1 x 108 Ω. m at 1000°C.

• We provide quartz crucibles in standard and high purity formats and a variety of configurations to suit a range of application areas beyond crystal growing processes. These include: Calcination of fluorescent and phosphorescent powders and alumina. Chemical processing. Rare earth production. Standard and specialist research applications. Thanks to its long experience and flexible process, ATT Quartz is able to design tailor-made solutions. A large variety of shapes are available that can be adapted to meet each customer’s needs. When most companies are focusing solely on mass products, ATT’s Quartz Technical team is used to work on small or medium series, making sure they ultimately offer to their customer an optimum Cost of Ownership in their manufacturing processes.

Packing of Fused Quartz Crucibles

Standard Packing:

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes Special package is available on request.

ATTs’ Fused Quartz Crucibles is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition. 

Chemical Identifiers