Determination of Nitrogen in Carbon and Alloy Steels by Carrier Gas Fusion-Thermal Conductivity Method
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概要
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In the analysis of nitrogen in metals by the vacuum fusion or the carrier gas fusion method, lower values have generally been obtained than those by the wet method, because the surface of the melt is covered by a graphite layer deposited and the evolution of gas from the sample becomes difficult. Therefore, it was attempted to eliminate such an interference of graphite by using a MgO-lining graphite crucible. The results of the determination of nitrogen by the proposed method was in good agreement with those by the chemical method and it was confirmed that even in the case of a sample containing Al, nitrogen was quantitatively extracted without any influence of gettering. The time required for a single determination was about 5 to 8 minutes.
- 東北大学の論文
著者
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GOTO Hidehiro
The Research Institute for Iron, Steel and Other Metals
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Goto Hidehiro
The Research Institute For Iron Steel And Other Metal S
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HOSOYA Minoru
The Research Institute for Iron, Steel and Other Metals
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Hosoya Minoru
The Research Institute For Iron Steel And Other Metals
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Goto Hidehiro
The Research Institute For Iron Steel And Other Metal
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