At present, the assembly of one-dimensional or two-dimensional nanostructure units is becoming a new hotspot in the research of nanomaterials. Recently, some scholars have published a hydrothermal method to prepare micro-nano spherical tungsten oxide nanosheets.

The surface morphology, microstructure and particle size of cast tungsten carbide have a decisive influence on its application effect. Spheroidizing and rapid cooling of traditional cast tungsten carbide powder can significantly improve the toughness of hard surface materials containing cast tungsten carbide, and achieve the best combination of high wear resistance and high toughness of hard surface materials.

Metal oxides play a key role in the development of many advanced functional materials and smart devices. Among many metal oxides, tungsten trioxide (WO₃) is a unique material. It is a N-type semiconductor with a wide range of crystal forms, band gap of 2.5-2.8eV, and has visible light response characteristics. Therefore, WO₃ can be used as light sensor devices, such as photochromic devices and transparent electrodes; at the same time, WO₃ can also be used as visible light photocatalyst, using photodynamic degradation of organic pollutants and heavy metal ions in sewage, which is environmentally friendly and economical; in indoor environment detection, WO₃ can be used as a gas sensor.

Tungsten copper embedded block is manufactured by powder metallurgy, which is a kind of typical sweating material. Even if at high temperature (3000℃), the copper evaporation will take away the most part of heat and effectively reduce the surface temperature and keep the strength. In addition, it has perfect conductivity and plasticity, which is beneficial for improving the mechanical properties of the embedded part.