THE CHEMICAL DETERMINATION OF BORON IN BORON CARBIDE-ZIRCONIUM, CLAD WITH ZIRCALOY

Technical Report · Fri May 01 04:00:00 EDT 1959

DOI:https://doi.org/10.2172/4263443· OSTI ID:4263443

Rynasiewicz, J; Consalvo, V F

A rapid dissolution chemical method for the determination of boron in Zircaloy-clad boron carbideolved in a tained in a platinum dish which is cooled in a dry-ice bed. Approximately 96 to 99% of the total boron remains undissolved. This is filtered off, ashed, fused with sodium carbonate, and the boron is determined according to mannitol titration method. The acidsoluble boron is determined by a modified mannitol titration after separating the zirconium and other interfering cations with barium carbonate. The acidinsoluble and acid- soluble boron are added to give the total boron in the sample. The accuracy and precision of this analysis were checked on synthetic mixtures of standard'' boron carbide plus zirconium. At the 2% boron carbide (1.59% B) level or higher, the method was accurate to at least 1.15 relative per cent. The precision (95% confidence level) was plus or minus 0.27 and plus or minus 0.95 relative per cent based on 8 measurements or a single measurement, respectively. Standardization'' of the boron carbide sample was performed by analyzing for boron, carbon, and impurities. A mass balance of 100.22 plus or minus 0.69% was obtained and the boron value waa considered accurate within the precision of the analytical method. ( auth)

• Research Organization: Knolls Atomic Power Lab., Schenectady, N.Y.
• DOE Contract Number: W-31-109-ENG-52
• NSA Number: NSA-13-017798
• OSTI ID: 4263443
• Report Number(s): KAPL-M-JR-12
• Country of Publication: United States
• Language: English

Related Subjects

ACIDS
BARIUM CARBONATES
BORON
BORON CARBIDES
CHEMICAL REACTIONS
CHEMICALS
CHEMISTRY
COATING
COMBUSTION
COOLING
FILTERS
HYDROCHLORIC ACID
HYDROFLUORIC ACID
IMPURITIES
MANNITOL
MASS
MEASURED VALUES
MELTING
PLATINUM
QUALITATIVE ANALYSIS
QUANTITATIVE ANALYSIS
QUANTITY RATIO
RESIDUES
SEPARATION PROCESSES
SODIUM CARBONATES
SOLUBILITY
SOLUTIONS
SUGARS
ZIRCALOY
ZIRCONIUM