| 摘要 |
PURPOSE:To lower the melting temp. of a sample and to reduce the cost and size of a sample melting furnace by preliminarily melting a material for forming an alloy with the sample in the sample melting furnace. CONSTITUTION:A carrier gas in a closed gas flow passage 1 is circulated by a circulation pump 5 in an arrow A direction so as to flow through a sample melting pipe 18 of the sample melting furnace 8 to an oxygen pump 9. An electrochemical oxygen pump 9 for which a solid electrolyte is used measures the quantity of oxygen in the carrier gas by discharging the oxygen in the carrier gas to the outside of the passage 1. A metal 21 which can form the alloy with the sample 6 is preliminarily melted in the sample melting part 17 of the sample melting furnace 8. Then the sample 6 and the molten metal 21 forms the alloy when the sample 6 is dropped into the melting part 17. The alloy is melted at the temp. lower than the temp. in the case of the sample 6 alone and the gaseous oxygen in the sample 6 is released into the carrier gas. The quantity of the oxygen in the high melting metal is thus analyzed even if a special melting furnace is not used. |
