GB/T 34190-2017 Translated English of Chinese Standard. (GBT 34190-2017, GB/T34190-2017, GBT34190-2017): Surface coating weight (thickness) of electrical steel - X-ray spectrometric methodhttps://www.chinesestandard.net, 27 oct. 2018 - 15 pages This Standard specifies the method that uses X-ray spectrometric method to test the surface coating weight (thickness) of electrical steel. This Method is for measuring the coating weight per unit area of a sample at room temperature. The measurement results can also be expressed by the thickness of the coating. This Standard is applicable to the electrical steel that contains stable, undisturbed, X-ray fluorescence intensity characteristic elements in surface coating. The measurement range of a given coating material depends primarily on the available characteristic X-ray fluorescence intensity and acceptable measurement uncertainty. And it varies depending on the instrument and measurement method used. |
Table des matières
3 | |
Scope | 4 |
Principle | 5 |
Measuring device | 10 |
Measuring process | 11 |
Measurement result | 12 |
Annex A informative Production of coating weight standard sample | 13 |
Annex B informative Calibration of coating weight standard curve | 15 |
Expressions et termes fréquents
absorption method actual coating amount area or thickness calibration curve characteristic elements characteristic line characteristic X-ray fluorescence coating liquid density coating material coating or substrate coating thickness coating weight measurement coating weight standard coating weight thickness collimator cubic meter kg/m3 density correction factor Detect its fluorescence detection system detector electrical steel coating electrical steel substrate electrical steel surface energy dispersive fluorescent ray GB/T influencing factors intermediate coating large atomic number large content material coated measure coating measurement area measurement method measurement results measurement uncertainty measuring device meter or micron method generally selects micron g/m2 normalization coefficient photon primary X-rays ray intensity relationship saturation thickness scattered line produced scattering method Schematic diagram shown in Figure single measurement point Standard sample uniformity steel plate steel surface coating surface coating density surface coating weight test report uncoated uniformity evaluation sample unit area weight per unit X-ray fluorescence intensity X-ray spectrometric method X-ray tube