Quartz glass, known as the "king of glass", is widely used in many fields due to its excellent mechanical properties, heat resistance, and electrical insulation.

Theoretical calculated strength and actual measured strength

The theoretical calculated strength of quartz glass is as high as 24 × 10 ^ 3MPa, which indicates that in an ideal state, quartz glass can withstand extremely high mechanical stress. However, the actual measured strength is usually much lower than the theoretical value, possibly several tens of times lower. This is mainly because the actual strength of quartz glass is influenced by various factors, such as surface defects, geometric shape, testing methods, etc. The compressive strength of transparent quartz glass is generally between 490~1960MPa, the tensile strength is between 50~70MPa, the bending strength is between 66~108MPa, and the torsional strength is about 30MPa.

The main factors affecting the strength of quartz glass

Surface defects: Microcracks on the surface of quartz glass have a significant impact on its strength. The flexural strength of finely ground quartz glass samples is approximately 0.6 times higher than that of coarsely ground samples. This is because fine grinding can reduce the number and depth of surface microcracks, thereby improving the strength of the material.

Internal defects such as bubbles, impurities, uneven melting, and residual stress are also important factors affecting the strength of quartz glass. These defects will reduce the overall strength of the material, making it more prone to fracture when subjected to mechanical stress.

Temperature: The strength of quartz glass increases with temperature and reaches its maximum value near the annealing temperature. In addition, its shear modulus, Young's modulus, damping, Poisson's ratio, and failure modulus also increase with increasing temperature, while hardness is the opposite. This characteristic enables quartz glass to maintain high mechanical strength even in high-temperature environments.

Application advantages of mechanical strength of quartz glass

The high mechanical strength of quartz glass gives it the advantage of maintaining stable performance under mechanical stress. This makes it have broad application prospects in semiconductor manufacturing, aerospace, optical instruments and other fields. For example, in the semiconductor manufacturing process, quartz glass, as a wafer carrier and etching mask, needs to withstand extreme conditions such as high temperature and chemical corrosion, and high mechanical strength is the key to its ability to perform this task.

Ways to improve the mechanical strength of quartz glass

To improve the mechanical strength of quartz glass, the following measures can be taken:

Optimize production process: By improving production process, reduce the generation of internal defects such as bubbles and impurities, and improve the overall strength of materials.

Surface treatment technology: using surface treatment techniques such as fine grinding and polishing to reduce the number and depth of surface microcracks, thereby improving the flexural strength of materials.

Temperature control: When used in high temperature environments, the temperature should be controlled reasonably to avoid material softening or deformation due to excessive temperature, which may affect its mechanical strength.

Although the mechanical strength of quartz glass is influenced by various factors, it still has extremely high theoretical calculation strength in an ideal state. By optimizing production processes, surface treatment techniques, and temperature control measures, its mechanical strength can be further improved to maintain stable performance under various extreme conditions. Therefore, as the "king of glass", the excellent mechanical properties of quartz glass undoubtedly provide a solid guarantee for its application in many fields.

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.