Tungsten oxide is a kind of N-type semiconductor material with wide band gap. It is widely used in the field of gas sensors and can be widely used in the detection of various toxic and harmful gases. However, like most metal oxide semiconductors, tungsten oxide operates at a higher temperature (above 200 ℃), which greatly increases the power consumption of the sensor. Therefore, reducing the working temperature of tungsten oxide gas sensing materials has become the focus of scientific and technological personnel.

Porous tungsten is widely used in power electronics, aerospace and other high temperature fields as a variety of components prepared by porous or porous matrix, such as porous cathode matrix with high current density, high temperature fluid filter, high temperature heater of rocket nozzle, etc.

Recently, the 60th Anniversary Symposium of Jiangxi Provincial Bureau of Geology and Mineral Resources was held in Nanchang. It was learned that the Jiangxi Bureau of Geology and Minerals has made new breakthroughs in geological prospecting since its establishment 60 years ago: it has discovered and discovered five world-class deposits, more than 60 large and extra-large deposits, and more than 90 medium-sized deposits. The economic value exceeds 10 trillion yuan, providing a strong mineral resource guarantee and geological technical support for the economic and social development of Jiangxi Province. With the continuous growth of Jiangxi's geological prospecting economy, this year is expected to exceed 7.5 billions.

Additional material manufacturing is a new processing technology, commonly known as 3D printing, which is different from the traditional "removal" manufacturing. It does not need the original embryo and die. It directly forms any complex shape object by adding material layer by layer according to the computer three-dimensional model data of parts.