The high-temperature-resistant ring-shaped quartz boat is a precise quartz container specially designed for extreme heat treatment environments. Its unique "ring-shaped" structure design not only enhances the mechanical stability of the boat body, but also makes it easier to perform grasping, pushing and pulling, as well as automated transmission in the high-temperature furnace. This product is made of high-purity quartz glass (with SiO₂ content ≥ 99%) through high-temperature melting and molding, and possesses excellent high-temperature resistance (up to 1100°C - 1200°C for long-term use) and excellent thermal shock resistance. It is widely used in semiconductor diffusion, photovoltaic cell sintering, LED epitaxial growth, and precise ceramic sintering processes, and is a key carrier for safely transporting wafers, silicon wafers or powder materials at high temperatures.

FAQ

Q: What is the maximum temperature tolerance of this quartz boat?

A: Our high-temperature resistant ringed quartz boat is made of high-purity transparent or milky white quartz material, with a softening point of approximately 1730℃. In an oxidizing atmosphere, it can work stably in an environment ranging from 1100℃ to 1200℃ for a long time, and can withstand higher temperatures for a short period.

Q: What is the main purpose of the "ringed" design?

A: The ringed design is mainly for ease of operation. In the automated production line of the high-temperature furnace or during manual operation, metal hooks can catch the quartz ring for transmission, avoiding direct contact with the boat and causing contamination or damage, and also increasing the structural strength of the boat.

Q: Do you offer customization services? What is the minimum order quantity?

A: We provide comprehensive customization services, including size, the number of rings, quartz color (transparent/milky white/transparent), and processing accuracy. As a source manufacturer, we support single-piece prototyping and batch production. The specific order quantity depends on the complexity of the specifications.

Q: How do you ensure that the quartz boat does not deform at high temperatures?

A: We eliminate internal stress by precisely controlling the viscosity of the raw materials and the annealing curve in the molding process. For large-sized boats, we optimize the position of the rings and the wall thickness to ensure dimensional stability even under long-term high-temperature loading.

From the user's perspective, this high-temperature-resistant ring-shaped quartz boat mainly addresses the following core issues:

High-temperature deformation and collapse risk: It solves the problem that ordinary quartz materials tend to soften and deform under long-term high-temperature baking, causing the wafers or samples they carry to tip over or be scrapped.

Automation transfer challenge: The unique ring design solves the problem of the smooth quartz surface being difficult to grasp, perfectly adapting to the automatic boat-lifting mechanisms of various tube furnaces and box furnaces, thereby improving production line efficiency.

Process contamination issue: The high-purity material solves the problem of impurities precipitating from the container under high temperature, contaminating high-purity materials (such as semiconductor silicon wafers), ensuring product yield.

Core parameters

Silicon dioxide content: ≥ 99%

Long-term operating temperature: 1100℃ - 1200℃

Thermal expansion coefficient: 5.5×10⁻⁷ cm/cm·℃

Density: 2.2 g/cm³

Appearance color: Transparent, milky white, semi-transparent

Processing accuracy: ±0.05mm - ±0.5mm

Application Value

Outstanding thermal shock resistance: Even if the quartz boat is heated to 1100℃ and immediately immersed in cold water, it will not burst. This characteristic ensures safety in rapid heating and cooling processes, significantly reducing material costs.

Extremely high chemical stability: It is resistant to almost all acids and bases, except hydrofluoric acid. During acid cleaning, no metal ions are released, protecting the purity of the processed materials.

Excellent electrical insulation: The resistance value is one million times that of ordinary glass, making it an ideal electrical insulating material, especially suitable for processes requiring electric field heating.

Flexible structural customization: We can customize single-ring, double-ring or multi-ring structures, as well as different slot positions (such as 45 slots, 81 slots, 121 slots, etc.) for wafer carriers based on the customer's furnace size.

Customer Application Case

Case 1: A well-known third-generation semiconductor epitaxial wafer manufacturer (silicon carbide substrate processing)

Customer problem: When the customer carried out the high-temperature annealing process for silicon carbide (with a temperature as high as 1250℃), the ordinary quartz boat provided by the original supplier showed obvious bending deformation after about 10 uses, causing the expensive silicon carbide substrate to fall and crack, and the quartz impurities affected the cleanliness of the epitaxial layer.

Our solution: We customized a high-viscosity, milky semi-transparent, high-temperature-resistant ring-shaped quartz boat for the customer. By adjusting the viscosity parameters of the quartz material, we enhanced its creep resistance at the extreme temperature; at the same time, we optimized the support points of the "ring" to make the force more uniform.

Application effect: After testing, the new quartz boat, after continuous operation at 1250℃ for 50 times, maintained a flatness deviation within 0.2mm, without deformation, and no metal ions were detected to be released.

Case 2: A certain photovoltaic laboratory in Europe (diffusion process)

Customer problem: The customer had an old horizontal tube furnace with a special furnace tube diameter and needed to be combined with a mechanical hand for automatic pushing and pulling. The standard quartz boats on the market were either not of the right size or the position of the ring could not be grasped by the mechanical hand.

Our solution: The customer provided CAD drawings, and we used 3D modeling for simulation analysis to customize a special-shaped quartz boat with a diameter of 150mm and a length of 800mm. A reinforced double-ring structure was specially designed, and the outer diameter tolerance of the ring was strictly controlled within ±0.1mm to ensure the accuracy of the mechanical hand's grasping.

Application effect: After the product was delivered, it perfectly fit the customer's old equipment and automated mechanical hand, achieving continuous automated production of the phosphorus diffusion process, significantly reducing the fragmentation rate caused by manual intervention.

If you are looking for a quartz carrier that can withstand extreme high temperatures and has precise dimensions, please contact us. Whether you have a detailed engineering drawing or just a preliminary idea, our technical team can provide you with professional quartz material solutions and quotations.

Luverre Quartz manufactures and sells a wide range of high quality fused quartz glass, including fused quartz tubes, fused quartz plates, fused quartz rods, fused quartz windows, fused quartz crucibles, fused quartz boats, fused quartz flanges, fused quartz beakers, fused quartz glass instruments, and more. We can meet all kinds of customized requirements for fused quartz glass products.

For more information, please feel free to contact us.