High density yellow tungsten oxide may be used where higher density is required. In the production process, yellow tungsten oxide should be tested up to standard by relevant testing equipment including X-ray diffractometer, apparent density meter and particle size analyzer. X-ray diffractometer is used to detect the valence of tungsten, then to determine the phase composition. Apparent density meter is used for measuring apparent density and particle size analyzer for particle size measurement.
X ray diffractometer includes the following main components:
1. High stability X-ray source to provide X-ray for measurement. Changing the target material of X-ray tube anode to change the wavelength of X-ray, and adjusting the intensity of anode voltage to control X-ray source.
2. Adjusting system of sample and the sample position. Sample must be a single crystal, powder, polycrystalline or microcrystalline solid block.
3. Ray detector. The multi crystal diffraction patterns can be obtained by measuring the diffraction intensity or the diffraction direction simultaneously.
4. Analyzing system of diffraction pattern. The modern X-ray diffraction system is equipped with a special computer system for processing and analyzing the analysis software.
The main parameters of laser particle size analyzer are: test range, accuracy, repeatability, laser, dispersion system, optical system and so on.
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