The influence of material purity of tungsten crucible on its performance
As an indispensable key material in high-temperature industries, the performance of tungsten crucible directly affects the production efficiency and product quality in many fields such as crystal growth, metal smelting and vacuum evaporation. Among many performance indicators, the purity level of tungsten material not only determines the physical properties of the crucible, but also has a profound impact on its chemical stability, mechanical strength and service life. First of all, the material purity of tungsten is directly related to the mechanical properties of the crucible. High-purity tungsten usually contains very few impurities, especially the strict control of elements such as oxygen, nitrogen, and carbon, which reduces the lattice defects inside the material and makes the grains more uniform and dense. In this way, the tensile strength, fracture toughness and thermal fatigue performance of the crucible are significantly improved. Under high-temperature repeated cycles, high-purity tungsten crucibles can more effectively resist the crack propagation caused by thermal stress, thereby extending their service life. On the contrary, impurities included in low-purity tungsten often become stress concentration points, which can easily cause microcracks and material embrittlement, leading to early failure of the crucible in a high-temperature environment. Secondly, purity has a great influence on...
2025-07-04
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