Dark blue nano tungsten oxide may not only be applied for preparing nano-ceramic dispersion solution, but also be used to produce AKS-doped tungsten wire (i.e., tungsten wire doped with Al, Si and K elements). This is because doping blue tungsten oxide has the following advantages. For example, the blue tungsten oxide powder has a large specific surface area and a large surface crack. Also, blue tungsten oxide has good ion exchange activity. Besides, there are a large amount of hydrogen and copper in the blue tungsten oxide powder. Due to these advantages of blue tungsten oxide, the properties of AKS-doped tungsten wire adding blue tungsten oxide powder have better high temperature performance than AKS-doped tungsten wire adding yellow tungsten oxide.
It is no wonder that the AKS-doped tungsten wire has been modified from addition of yellow tungsten oxide to addition of blue tungsten oxide as production and research continue to deepen. Certainly, the quality control of blue tungsten oxide needs to remove the influence of process parameters and the like in the production process.
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