Determination of silicon in steels

Fowler, Robert M.

doi:10.1021/ac50080a016

Cited by 5 publications

(2 citation statements)

References 3 publications

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“…paper and residue alternately but not more than8 to hot water to remove the iron salts.Transfer the paper to a. platinum crucible and reserve. (d) Add 15 ml of HNO^to the filtrate and evaporate the solution as directed in paragraph (b).…”

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confidence: 99%

Standard Reference Materials :

Shultz¹

1965

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The procedures described in this publication are those used at the National Bureau of Standards in the analysis of white cast iron standard reference materials for the ten (10) major elements; namely , carbon., manganese , phosphorus , sulfur , silicon., copper, nickel, chromium, vanadium, and molybdenum. Carbon and sulfur are determined by combustion; manganese, chromium and vanadium by titrimetry; phosphorus, copper, and molybdenum by photometry; and silicon and nickel by gravimetry. These procedures, which are slight modifications of well-established and previously published methods, were selected for their accuracy and dependability .

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confidence: 99%

Standard Reference Materials :

Shultz¹

1965

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“…In many instances, alloys containing low silicon (0.01 to 1.0%) are analyzed by using these techniques with a large sample size (3.0 to 10.0 grams). A few of the serious disadvantages of these procedures include the following (4) precipitation is rarely complete, even when two dehydrations are made; boron causes high results by partial coprecipitation wfith Si02 because it is weighed with the silicon dioxide and volatilized as BF3; and niobium, tantalum, and tungsten are largely precipitated with silicon. These disadvantages do not include, of course, the tremendous amount of the analyst's time involved for decomposition of the sample and a minimum of two dehydrations, nor the possible error encountered in filtrations, evaporations, and volatilization of the Si02 with HF.…”

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confidence: 99%

Diffusion Method for the Determination of Silicon in Inorganic Materials.

Householder¹,

Russell²

1964

Anal. Chem.

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Determination of Residual Monomers and Other Volatile Components in Styrene Based Polymers by Gas Chromatography.

Shapras¹,

Claver²

1964

Anal. Chem.

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The minimum time required for complete diffusion of silicon was not evaluated. It was convenient in this laboratory to have the diffusion period cover between 16 and 20 hours, which was overnight, and the results of Tables I, II, and III represent these time periods.It is not believed that the addition of tartaric acid in the color development of silicon in this procedure is necessary because little or no phosphate is believed to ' diffuse into the sodium hydroxide portion. However, tartaric acid was added throughout these determinations as a safety feature.No study was made, at this time, to ascertain the maximum amounts of SiF4 that can be diffused and collected by the amounts of NaOH that are used throughout this procedure. Likewise, no study was undertaken at this time to determine silicon in organic materials; however, since fluoride is determined using diffusion procedures (11) in organics, it would seem likely that silicon in organosilicons known as silicones, silanes, or siloxanes could be determined by this procedure. LITERATURE CITED(1) A8TM Methods, "Chemical Analysis of Metals," p. 368 (1956).(2) Carlson, A. B., Banks, C. V., Anal.

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Determination of silicon in steels

Cited by 5 publications

References 3 publications

Standard Reference Materials :

Standard Reference Materials :

Diffusion Method for the Determination of Silicon in Inorganic Materials.

Determination of Residual Monomers and Other Volatile Components in Styrene Based Polymers by Gas Chromatography.

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