Analysis of the Application of Quartz Boats and Quartz Furnace Tubes in Wafer Manufacturing

Key Consumables in Semiconductor Manufacturing: The Vital Value of High-Purity Quartz Products

Driven by the rapid development of artificial intelligence, high-performance computing (HPC), new energy vehicles, and advanced packaging technologies, the global semiconductor industry continues to expand production capacity. As wafer manufacturing processes advance toward increasingly sophisticated nodes, higher demands are placed on the purity, heat resistance, and stability of production equipment and core consumables. Among these, quartz boats and quartz furnace tubes—made from high-purity quartz materials—serve as critical components in thermal processing steps such as diffusion, oxidation, and annealing, playing an irreplaceable role in wafer production.

Quartz Boat: The Core Carrier for Wafer Thermal Processing

Quartz boats are primarily used to hold silicon wafers and transport them into high-temperature equipment—such as diffusion, oxidation, or annealing furnaces—for processing.

In semiconductor manufacturing, a single quartz boat often carries dozens or even hundreds of wafers; its structural design directly impacts airflow uniformity and temperature distribution. High-quality quartz boats feature:

• Ultra-high purity with extremely low metal impurity content;
• Excellent high-temperature resistance, capable of long-term operation in environments exceeding 1000°C;
• Low thermal expansion coefficient, ensuring resistance to deformation;
• High surface finish, minimizing the risk of particle contamination;
• High dimensional precision, meeting the operational requirements of automated equipment.

As 12-inch wafers become the industry standard and yield requirements for advanced process nodes continue to rise, the machining precision and cleanliness of quartz boats have become key metrics for wafer fabs.

Quartz Furnace Tube: The Critical Reaction Chamber for Thermal Processing Equipment

Quartz furnace tubes are essential components of thermal processing equipment like diffusion and oxidation furnaces, serving primarily to create a stable and clean process environment.

During high-temperature processing, quartz furnace tubes must withstand prolonged exposure to process gases—such as oxygen, nitrogen, and hydrogen—while enduring the thermal shock caused by repeated heating and cooling cycles. Consequently, these products must possess:

1. High-Temperature Stability

High-purity quartz features a high softening point, enabling stable, long-term operation in environments exceeding 1100°C. 2. Ultra-low contamination characteristics

Quartz materials typically achieve a purity of over 99.99%, effectively minimizing the release of metal ions and impurities and ensuring the cleanliness of wafer surfaces.

3. Excellent optical transparency

For certain specialized process equipment, high light transmittance facilitates more precise temperature monitoring and control.

4. Superior chemical stability

Capable of withstanding various process gas environments, thereby extending equipment service life.

Currently, quartz furnace tubes have become standard consumables in processes such as oxidation, diffusion, and LPCVD.

Advanced manufacturing processes drive demand for high-end quartz products

Industry trends indicate that the advancement toward nodes like 3nm and 2nm is imposing stricter requirements on quartz consumables used by wafer fabs:

• Ultra-high purity
• Low particle generation rates
• Stricter dimensional tolerance control
• Longer service life
• Faster delivery capabilities

Meanwhile, the global wave of semiconductor capacity expansion—spanning logic chips, memory chips, power semiconductors, and third-generation semiconductors—is fueling demand for consumables such as quartz boats and quartz furnace tubes.

Industry experts anticipate steady growth in the high-purity quartz product market over the coming years, with rapidly rising demand for domestically produced high-end quartz components, particularly for new wafer fab projects in Mainland China, Southeast Asia, and North America.

Southeast Quartz: Providing customized quartz solutions for semiconductor equipment

As a specialized manufacturer of quartz products, Southeast Quartz focuses on the deep processing of high-purity quartz materials, offering products tailored to customer needs, including:

• Quartz boats
• Quartz furnace tubes
• Quartz bell jars
• Quartz rings
• Quartz flanges
• Quartz crucibles
• Customized quartz components

Utilizing high-purity raw materials and precision processing techniques, the company’s products are widely used in the semiconductor, photovoltaic, optical fiber, laboratory equipment, and high-temperature industrial sectors, all while remaining committed to delivering stable and reliable quartz solutions to global customers.

Conclusion

In the wafer manufacturing process, quartz boats and quartz furnace tubes—despite being consumables—are directly linked to stable equipment operation and chip yields. As the semiconductor industry advances with cutting-edge process technologies and capacity expansion, the importance of high-purity quartz products will become increasingly prominent. For quartz manufacturers, seizing opportunities arising from the industry's upgrade—and continuously enhancing product purity, machining precision, and customization capabilities—will be key to future market competitiveness.