Corrosion resistant quartz square container

In the process of high-purity and highly corrosive environments such as semiconductors, photovoltaics, chemicals, and laboratories, ordinary containers often find it difficult to balance corrosion resistance and thermal stability. The corrosion-resistant quartz square container is a professional customized product designed to solve this problem. It is made of high-purity quartz material and combined with a square structure, which can efficiently utilize space and work stably for a long time under harsh conditions such as strong acid, strong alkali, and high temperature, providing a reliable carrier for precision manufacturing and scientific research experiments.

FAQ:

Q1: What are the differences between quartz square containers and circular containers in practical use?  

A: The square structure is more conducive to spatial arrangement, especially suitable for neat stacking, arrangement, and synchronous processing of multiple batches in the cleaning tank of automated production lines, which can effectively improve the utilization rate per unit area. At the same time, the square inner wall is easy to process into structures with chamfers or dividing grooves, meeting specific workpiece placement requirements.

Q2: What specific media does the corrosion resistance of this container manifest in?  

A: The product has excellent chemical stability against hydrochloric acid, nitric acid, sulfuric acid, hydrofluoric acid (with specific concentrations and processes), aqua regia, and various organic solvents. It has no obvious corrosion or impurity precipitation at room temperature and high temperature, and is suitable for wet etching, cleaning, soaking, and other processes.

Q3: Can I make a complete customization based on the size of my device?  

A: Okay. We offer full parameter customization from inner diameter length, width, height, wall thickness, chamfer radius, opening method (open/covered/flange interface) to additional structures (partition, liquid level line, handle, overflow tank), with a minimum capacity of 20 × 20 × 20mm laboratory micro containers and a maximum capacity of 800 × 600 × 400mm industrial grade tanks.

Q4: What is the temperature resistance limit of quartz containers? How is the thermal stability?  

A: The hot deformation temperature is about 1100 ℃, and the long-term use temperature is below 1000 ℃. It has good resistance to rapid cooling and heating (such as not exploding when dropped from 800 ℃ to room temperature), and is suitable for high-temperature pickling, deposition, or baking processes.

What core problems can the product solve for you?

-Avoid metal contamination: Ordinary stainless steel or PP containers will release metal ions in acid solution, while quartz containers have almost no dissolved substances, ensuring high cleanliness requirements for chips, optical components, etc.

-Solving space waste: Circular slots leave a large number of gaps in the automation line, while square structures can be seamlessly arranged to increase batch processing capacity.

-Overcoming high temperature corrosion: Most plastic containers deform or release impurities above 150 ℃, while quartz containers can work stably in corrosive atmospheres above 800 ℃.

-Satisfy non-standard sizes: Standard containers on the market cannot adapt to special workpieces or equipment cavities. We offer customized sizes to avoid equipment modification costs.

The corrosion resistant quartz square container uses high-purity synthetic quartz (SiO ₂ content ≥ 99%) or fused silica as the base material, and is formed through multiple processes such as high-temperature melting, precision annealing, machining and flame polishing. The material has an extremely low coefficient of thermal expansion (5.5 × 10 ⁻⁷/℃) and a dielectric constant of only 3.7-3.9 at a frequency of 1MHz, which does not interfere with high-frequency cleaning or sensing processes.

How to convert advantages into your profits

Strong acid resistance (excluding HF, customization is required): extends container life by 3-5 times, reduces replacement frequency, and lowers consumable costs

High transparency (visible light and ultraviolet light): convenient for real-time observation of internal reaction status, no need to open the lid for sampling

The inner wall smoothness can reach Ra 0.4 μ m: it is not easy to leave particles or chemical liquids, and the cleaning cycle is shortened by more than 40%

Square structure+rounded transition design: eliminates cleaning dead corners while avoiding stress concentration leading to cracking

Support ± 0.1mm dimensional tolerance: can be precisely matched with automated robotic arms, sealing covers, and positioning fixtures

Typical application scenarios

-Semiconductor wet cleaning: As a single or multiple wafer cleaning tank, it can withstand standard cleaning solutions such as SPM (sulfuric acid/hydrogen peroxide), SC1 (ammonia/hydrogen peroxide), DHF (dilute hydrofluoric acid), etc.

-Photovoltaic velvet production and etching: used for alkali velvet production or acid etching of silicon wafers. The square groove can vertically stack dozens of silicon wafers, improving the production capacity of a single groove.

-Chemical synthesis and purification: As a pilot reaction vessel for high-purity reagents, it avoids the influence of container precipitates on product purity.

-University and research laboratories: used for experiments that are extremely sensitive to pollution, such as metal organic chemistry and synthesis of nanomaterials.

What specific application challenges are being addressed?

1. Challenge: Pitting corrosion or metal contamination during wafer cleaning process

Our solution: After circulating the high-purity quartz inner wall in an 80 ℃ SC1 solution for 2000 hours, the surface metal impurity content (Fe, Cu, Cr, etc.) is less than 0.1ppb to prevent cross contamination.

2. Challenge: Irregular workpieces cannot be placed in standard circular containers

Our solution: Customizable L-shaped, U-shaped or stepped square inner cavity, perfectly wrapping irregular substrates or cylindrical heating rod arrays.

3. Challenge: High temperature acid mist causes rapid whitening and strength reduction of the container

Our scheme: fused silica treated by vacuum deaeration has an internal bubble rate of<0.5%, no microcrack growth under high temperature, and its service life is increased by more than 2 times.

Customer Application Case (Anonymous)

Case 1: A 12 inch wafer foundry (FAB Factory 6)

-Problem: The original PTFE rectangular cleaning tank was severely deformed in a 120 ℃ phosphoric acid solution, resulting in wafer jamming and fragmentation, and yellow spot contamination on the inner wall of the tank every two weeks.  

-Solution: Customized corrosion-resistant quartz square container, size 520 × 420 × 180mm, wall thickness 8mm, inner wall flame polished to mirror finish, bottom with 3 ° drainage slope and 8mm diameter drainage hole added.  

-Result: After continuous use for 9 months without deformation or macular degeneration, the fragmentation rate decreased from 0.3% to 0.02%, saving approximately $70000 in consumable replacement costs annually.

Case 2: A certain photovoltaic research and development center

-Problem: The production process of heterojunction battery velvet requires processing 210mm square silicon wafers in an 85 ℃ alkaline TMAH solution. The commercially available round groove can only hold 25 wafers at a time, and the uneven temperature inside the groove leads to a large difference between the edge and the center velvet surface.  

-Solution: Customize a 300 × 300 × 200mm quartz square container with vertical insert slots on the inner wall (one every 3mm, for a total of 90 slots), and design a peripheral circulating heating jacket.  

-Result: Processing 90 silicon wafers in a single operation resulted in a 260% increase in production capacity; Temperature uniformity is controlled within ± 0.5 ℃, and the consistency of suede reflectivity fluctuates from 15% to within 3%.

Case 3: A fine chemical enterprise

-Problem: When synthesizing a high-purity organic boron compound, the iron ions in the glass lined reaction vessel dissolve, causing the product to discolor and become ineffective.  

-Solution: Customize a 200 × 150 × 250mm square quartz container with a sealed flange, with two standard threaded interfaces on the top for connecting the condenser tube and nitrogen inlet tube.  

-Result: The purity of the product increased from 99.2% to 99.97% and was successfully verified by pharmaceutical intermediate customers.

We provide comprehensive specification customization services

You can freely combine the following parameters or send your drawings directly:

-External dimensions: length 20-800mm, width 20-600mm, height 20-400mm

-Wall thickness: 2-15mm (selected according to usage pressure and temperature)

-Shape details: straight wall, conical bottom, curved bottom, with overflow groove, with partition, with thermometer sleeve

-Opening form: fully open, tapered, threaded sealing cover, quick installation flange, grinding flat surface

-Additional features: laser marking scale, external frosted area, handle sintering, pouring nozzle

No minimum order quantity required, one piece can also be customized.

If you are looking for the ideal square container for corrosive media, high-temperature processes, or high-purity requirements, please feel free to send your specifications or technical drawings at any time. We will provide you with a free design feasibility analysis and send out samples within 7 days after confirmation. Contact us immediately for exclusive quartz container solutions tailored to your process.

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.