Development of Determination of Trace Oxygen in Steel Using Molten Tin after Removing Surface Oxide under the Closed System

Uchihara, Hiroshi; Bando, Atsushi; Ikeda, Masahiko; Nakahara, Tsutomu

doi:10.2355/tetsutohagane1955.89.9_988

Cited by 1 publication

(2 citation statements)

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“…It generates an oxide film, which is thought to be iron oxide. [1][2][3][4] When a steel is subject to analyze for its O content, a small specimen is prepared from the steel: sampled from liquid state of the steel or cut from solidified state of the steel. Analysis of O content in metal may be made by wet-chemical analysis 5) or radio-chemical analysis.…”

Section: Introductionmentioning

confidence: 99%

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Simultaneous Analysis of Soluble and Insoluble Oxygen Contents in Steel Specimens Using Inert Gas Fusion Infrared Absorptiometry

Hong

Kang

2021

ISIJ Int.

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In order to evaluate cleanliness of steel samples which contain oxygen in two different forms -chemically dissolved form and physically dispersed form in steel matrix, identification of each oxygen in the steel is important. A simple but promising method for simultaneous analysis of these two types oxygen in steel samples was developed in the present study using Inert Gas Fusion Infrared Absorption Method. By utilizing different carbothermic reaction temperature for each type of oxygen, the chemically dissolved oxygen (soluble oxygen) was first separated from the steel specimen at a low reaction temperature, while the physically dispersed oxygen (insoluble oxygen in the form of oxide inclusion) was separated at a higher reaction temperature. This idea was applied to a number of Al-killed ultra low carbon steel specimens, which contain alumina inclusions. It was shown that separation of the soluble oxygen and the insoluble oxygen was possible. The obtained oxygen content in this new method was independently validated by a conventional Inert Gas Fusion Infrared Absorption Method for the total oxygen content and by cross-sectional analysis of non-metallic inclusion for the insoluble oxygen. A possible supersaturation state of liquid steel after RH process was observed.

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Section: Introductionmentioning

confidence: 99%

“…6,7) For quick and easy analysis for the O content in steel specimen, combustion method either in vacuum or in inert gas atmosphere has been frequently used. [2][3][4][5][8][9][10][11][12][13] In these days, the combustion method under He gas as an inert gas has been extensively used. Its principle is discussed in Sec.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Analysis of Soluble and Insoluble Oxygen Contents in Steel Specimens Using Inert Gas Fusion Infrared Absorptiometry

Hong

Kang

2021

ISIJ Int.

View full text Add to dashboard Cite

show abstract

Development of Determination of Trace Oxygen in Steel Using Molten Tin after Removing Surface Oxide under the Closed System

Cited by 1 publication

References 5 publications

Simultaneous Analysis of Soluble and Insoluble Oxygen Contents in Steel Specimens Using Inert Gas Fusion Infrared Absorptiometry

Simultaneous Analysis of Soluble and Insoluble Oxygen Contents in Steel Specimens Using Inert Gas Fusion Infrared Absorptiometry

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