Determination of Carbon in Low-Carbon Iron and Steel

Abstract

An improved apparatus and method for out the excess oxygen, determination of the determination of carbon in low-carbon the carbon dioxide by a pressure measureiron and iron alloys are described. The ment in a standard volume. The sample is method consists of combustion of the heated by a high-frequency induction fursample in an all-glass apparatus, collection nace.

Rapid Method of Determining Minute Quantities of Carbon in Metals

“…The present paper shows how a complete, accurate analysis can be made in 20 minutes instead of requiring 35 minutes to 2 hours with the apparatus used by the above authors (3)(4)(5)(6). This presupposes a single apparatus operated by a single operator including weighing and blank determinations.…”

“…The first improved method was developed by the senior author (7) and detailed improvements were made by Ziegler (9). Other developments have included separation of sulfur dioxide from the carbon dioxide in a somewhat modified apparatus (8) and the use of high-frequency heating (6).…”

Gas Analysis

“…The coordinated use of a cold trap and a McLeod gage serves to provide the necessary data (91); and in the Microvol the cold trap is made an integral part of a McLeod gage with a broad operating range (260). A few thousandths of 1% of carbon dioxide in a streaming gas can be determined by using a condensation trap to collect, and a vacuum system to measure, this component (13,357).…”

A procedure for gas analysis at low pressures

“…of carbon . 18 When the minor constituent to be measured is hydrogen, it is very conveniently extracted by means of the internal palladium tube, and then measured after the other gases have been pumped away. Table I1 gives typical results obtained on some mixtures of hydrogen with inert gas which were analysed in this way.…”