Quartz crucible, as an important experimental and industrial equipment, plays a crucial role in multiple fields. Understanding the temperature range of quartz crucibles is of great significance for ensuring their stability and prolonging their service life.

Basic characteristics of quartz crucible

Quartz crucibles are mainly made of high-purity silicon dioxide, which has properties such as high purity, high temperature resistance, cleanliness, and homogeneity. These characteristics enable quartz crucibles to remain stable in high temperature environments, and are not easily deformed or broken.

The temperature range for the use of quartz crucibles

The temperature range for the use of quartz crucibles mainly depends on their material and manufacturing process. Generally speaking, quartz crucibles can be used below 1450 degrees Celsius, but the specific operating temperature needs to consider the following factors:

Deformation temperature: The deformation point of quartz crucible is approximately 1100 ℃. This means that above this temperature, the quartz crucible may undergo deformation, affecting its effectiveness. Therefore, in order to ensure the shape and size stability of quartz crucibles, it is usually recommended to use them below their deformation point.

Softening temperature: The softening point of quartz crucible is approximately 1730 ℃. Although quartz crucibles do not melt immediately at this temperature, their shape and strength may be severely affected. Therefore, in practical use, it is advisable to avoid approaching or exceeding this temperature as much as possible.

Short term use temperature: In some cases, quartz crucibles need to withstand high temperatures for a short period of time. According to relevant information, quartz crucibles can reach 1450 ℃ in a short period of time (such as a few minutes or hours) without severe deformation or damage. However, prolonged use at this temperature may lead to a decrease in the performance of the quartz crucible.

Specific application scenarios: Quartz crucibles have different temperature requirements for their use in different fields. For example, in the semiconductor industry, quartz crucibles need to withstand high-temperature crystal pulling processes, so their operating temperature may approach or reach their deformation point. In terms of metal smelting, although high temperature resistance is also required, the requirement for the shape stability of quartz crucibles may be relatively low.

Precautions for using quartz crucible

Avoid rapid temperature changes: The thermal expansion coefficient of quartz crucibles is extremely small and can withstand drastic temperature changes. However, to avoid thermal stress damage caused by rapid temperature changes, it is recommended to gradually increase or decrease the temperature during use.

Choosing the appropriate flux: When using quartz crucible, the appropriate flux should be selected. For example, potassium (sodium) bisulfate or sodium thiosulfate can be used as fluxes, but the melting temperature should not exceed 800 ℃.

Pay attention to corrosion issues: Quartz crucibles can be corroded by hydrofluoric acid and strong alkali, so contact with these substances should be avoided during use.

Application fields of quartz crucible

Quartz crucibles have a wide range of applications in various fields. In the semiconductor industry, it is commonly used for the production of large-diameter monocrystalline silicon; In terms of metal smelting, its high temperature resistance and corrosion resistance make it an ideal choice for smelting metals such as aluminum and steel; In addition, it also has important applications in fields such as new energy, photovoltaics, and biochemistry.

The temperature range for the use of quartz crucibles mainly depends on their material, manufacturing process, and specific application scenarios. In order to ensure the stability of quartz crucible performance and extend its service life, the temperature range should be strictly followed during use, and attention should be paid to avoiding rapid temperature changes, selecting appropriate fluxes, and paying attention to corrosion issues.

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