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X‐ray methods for the determination of the amount of glass phase in mullite refractory grog
Author(s) -
Knudsen Torben
Publication year - 1976
Publication title -
x‐ray spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.447
H-Index - 45
eISSN - 1097-4539
pISSN - 0049-8246
DOI - 10.1002/xrs.1300050406
Subject(s) - mullite , grog , materials science , scanning electron microscope , phase (matter) , analytical chemistry (journal) , mineralogy , amorphous solid , composite material , metallurgy , chemistry , crystallography , chromatography , ceramic , organic chemistry
Two different methods were used to determine the amount of glass phase in mullite refractory grog. Quantitative X‐ray diffractometry with calcium fluoride as an internal standard, was used to determine the amount of the crystalline phases, mullite and α‐corundum. The amount of glass phase was calculated as the difference from 100%. The other method used the scanning electron microscope, equipped with an energy‐dispersive detector. Samples consisting of polished sections were analysed both in the scanning mode and with the spot situated in the glass phase. The bulk chemical composition and the chemical composition of the glass phase thus found, was used to calculate the amount of glass phase in the samples. Agreement within the estimated uncertainties of the two methods was achieved with three different samples.