Patent ID: 6143571
Filing Date: 2000-11-07
Classification: G01N,Y10T

Abstract:
A method for analyzing a metal for oxygen, using inert gas carrying fusion/infrared absorption analysis, comprising the steps of:placing a metal analyte in a graphite crucible;heat-melting the metal analyte;extracting a gas from the melt bath; andanalyzing the gas to determine the total oxygen content of the metal in the form of a plurality of separated waves, wherein the metal analyte is heated at a temperature rise rate of not more than 20.degree. C./sec in a period from a starting point A of a first wave to a peak point B of the first wave, held at a constant temperature in a period from the peak point B of the first wave to an end point C of the first wave, and, after the completion of the appearance of the first wave, is further heated to melt the metal analyte for further analysis.