Tungsten carbide is the main raw material for the production of hard alloy. The process of producing alloy powder in the tungsten production and processing enterprises is basically the combination of tungsten carbide powder and cobalt powder through mechanical mixing, and the uniformity of the alloy powder is not ideal. It has a great influence on the pressing of the subsequent cemented carbide. Some scholars have tried to pre - configure the alloy powder in the liquid state and then reduce the alloy powder.

Rare earth metal is an important resource and strategic resource in China. It is widely used in various fields and has been known as "industrial monosodium glutamate". Rare earth elements are highly active metals, which are usually difficult to be extracted from their compounds in general conditions. The electrolytic extraction requires the crucible and tungsten electrode.

Structural water model of tungsten oxide produced by the hydrogen gas dehydrogenation of Pt catalyze the reaction of tungsten oxide and hydrogen on the surface of Pt: a part of hydrogen ions reacts with the oxygen ions on the surface of tungsten oxide to generate water molecules and release them from the film.

When the size of the tungsten oxide material is as small as nanometers, the tungsten oxide material exhibits different physical and chemical properties from those of conventional materials. Nano-sized tungsten oxide materials will produce small size effects, surface effects, quantum size effects and tunneling effects, resulting in new properties of acoustic, optical, electrical, magnetic and thermal properties.

As an important semiconductor material, tungsten oxide has been widely applied to gas sensing, photocatalysis, electrochromic and field emission due to its special defect structure and chemical properties. There are some non-stoichiometric proportions of tungsten oxide in the actual preparation.

Oxygen-deficient tungsten oxide can degrade methyl orange solution, but the degradation reaction belongs to the catalytic reaction or ordinary chemical reaction, still need further verification. To verify whether the sample degrades methyl orange is a catalytic reaction or a chemical reaction, whether the crystal structure of the oxygen-deficient tungsten oxide has been degraded after the degradation experiment can be observed to determine its reaction catalytic mechanism.

Oxygen-deficient tungsten oxide, as a new material, offers superior performance advantages over conventional tungsten oxide. The determination of its catalytic properties, the main use of methyl orange method to determine the structural characteristics of oxygen-deficient tungsten oxide.

XRD patterns of tungsten oxide nanoball structures grown at a substrate temperature of 800 ° C for a holding time of 15 minutes. The diffraction peak at 23.5 ° in the XRD spectrum corresponds to the monoclinic γ-phase tungsten oxide surface, while the diffraction peaks at 41 °, 58 ° and 74 ° correspond to the cubic tungsten element. Among them, the diffraction peak of crystal orientation is stronger, so the crystallinity of tungsten oxide is higher on the crystal orientation, and the lattice constant is 0.3728 nm.

The Pt doping technique can fully improve the electrochromic properties of the tungsten oxide nano flower film, and the Pt doping process of the tungsten oxide nano flower film is as follows:

As a new type of material film, tungsten oxide nano-flower film has its unique performance advantages, so its preparation process has a very important role. Tungsten oxide nano flower film preparation process is as follows: