DETERMINATION OF CERIUM IN MEDIUM AND HIGH ALLOY STEELS

Journal Article · Sun Jan 01 04:00:00 EST 1961 · Zavodskaya Lab.

OSTI ID:4047097

Fedorov, A A; Ozerskaya, F A

In order to avoid the difficulty presented by the interference of several alloying components with the determination of cerium in steel, the specimen is dissolved in HF with addition of H/sub 2/O/sub 2/ and the Ce is precipitated with CaF/sub 2/. The color reaction based on the formation of a yellow complex compound of tetravalent Ce when citric acid is added in alkaline solution in the presence of H/sub 2/C/sub 2/ is used for the colorimetric determination of the element. Addition of boric acid or of glycerin and Trilon B to the solution prevents coagulation of the Na/sub 5/STACe(C/sub 6/H/sub 5/O/sub 7/)/sub 3/! formed. The Ce may be determined also spectrographically, using the Ce fluoride precipitate calcined at 450 to 500 deg C. The method was used with good success in steel analysis. (TTT)

• Research Organization: I.P. Bardin Central Scientific Research Inst. of Ferrous Metallurgy, USSR
• NSA Number: NSA-15-022274
• OSTI ID: 4047097
• Journal Information: Zavodskaya Lab., Journal Name: Zavodskaya Lab. Vol. Vol: 27
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

ALLOYS
CALCIUM FLUORIDES
CERIUM
CERIUM FLUORIDES
CHEMISTRY
CITRIC ACID
COLOR
EDTA
HYDROFLUORIC ACID
HYDROGEN PEROXIDES
MEASURED VALUES
QUANTITATIVE ANALYSIS
SPECTRA
STEELS