QUANTITATIVE ANALYSIS METHOD OF CR2O3 IN SAMPLE CONSISTING ESSENTIALLY OF ZNO BY FLUORESCENT X-RAY METHOD

摘要

PURPOSE:To analyze Cr2O3 in a voltage non-linear resistor consisting essentially of ZnO in particular quantitatively and quickly with high accuracy by polishing a sample with #180 carborundum then washing the same, and drying it with hot wind thence analyzing the Cr2O3 quantitatively by a fluorescent X-ray method. CONSTITUTION:A sample consisting essentially of ZnO is polished with #180 carborundum, after which it is washed and is dried with hot wind; thereafter the Cr2O3 in the sample is determined by a fluorescent X-ray method. Particularly the voltage non-linear resistance element is added with necessary Cr2O3, Bi2O3, Co2O3, MnO2, Sb2O3, NiO, SiO2, etc. other than the essential component ZnO but Cr2O3 is determined quickly with high accuracy by the above- described analytical method without the influence of the contents of such other components. Since the sample is analyzed non-destructively with the simple pre- treatment, the results thereof are used quickly for controlling product quality.