In some special high-temperature atmospheres or melt environments, tungsten crucibles still face a certain degree of corrosion problems. Corrosion not only affects the service life of the crucible, but can also contaminate the material being treated and reduce product quality. Therefore, improving the corrosion resistance of the crucible is the key to improving its comprehensive performance and prolonging the service life. In this paper, the corrosion mechanism, influencing factors and main improvement methods are systematically analyzed and discussed.

Due to the high melting point of tungsten itself, it is difficult for the traditional casting and molding method to be directly applied to the manufacture of crucibles, so the sintering process has become one of the main methods for preparing tungsten crucible. In this paper, we will focus on the sintering process of crucibles, and discuss its process flow, key parameters, technical challenges and optimization directions.

Monocrystalline materials occupy a core position in high-tech industries such as semiconductors, optoelectronics, lasers, and aerospace, and their crystal quality directly affects the performance and reliability of terminal devices. 

The development of high-end manufacturing industry has put forward higher requirements for the temperature resistance, thermal shock resistance, structural stability and service life of tungsten crucibles. 

The manufacturing process of tungsten crucible is complex and the technical requirements are high, mainly including powder preparation, pressing molding, high-temperature sintering and mechanical processing.

Vacuum heat treatment is a process of heating and cooling metals or alloys under high vacuum or protective atmosphere, and is often used to improve the mechanical properties, dimensional stability and surface quality of materials.

In the field of modern high-end manufacturing, superalloys are widely used in aerospace, gas turbines, nuclear industry and high-temperature chemical industries due to their excellent high-temperature strength, oxidation resistance and corrosion resistance. 

With the continuous development of nuclear energy technology, the requirements for thermal stability, corrosion resistance and structural integrity of materials under extreme conditions are increasing, and tungsten crucibles have become one of the important containers for the processing and research of highly radioactive materials, molten nuclear fuel, high-temperature structural materials and radioactive waste due to their excellent physical and chemical properties.

With the rapid development of semiconductor technology, the requirements for material purity, structural stability and preparation process are increasing. Due to its excellent physical and chemical properties, tungsten crucible occupies an extremely important position in the preparation of semiconductor materials, especially in key processes such as high-temperature crystal growth, smelting, and vapor deposition.

As an important high-temperature refractory metal vessel, tungsten crucible is widely used in various high-temperature experiments, especially in the fields of materials science, metallurgical engineering, semiconductor manufacturing and nuclear energy technology.