Author: H. G. King
Publisher:
ISBN:
Category : Boron
Languages : en
Pages : 20
Book Description
Because of the refractory nature of zirconium hydride and zirconium oxide, analysis of these materials for trace amounts of boron may be affected adversely by loss of boron or contamination from the container during decomposition. Both sources of error may be obviated by a direct spectrochemical analysis employing either copper fluoride or sodium carbonate as pyroelectric distillation carriers. Since both the hydride and oxide appear to behave similarly in the arc with these carriers, easily prepared zirconium oxide standards were useable for analysis of both materials. Acid or fusion decompositions of the two compounds to allow separation of boron as trimethyl borate were studied. Decomposition was successful with refluxing sulfuric acid, and partly successful with sodium carbonate melts. Loss of boron during conversion of zirconium hydride to the oxide was indicated during a study of the ignition conditions, and shown conclusively by spectrographic examination of the off-gases. Contamination of the sample material by boron from new platinum ware was also found. Agreement of spectrochemical and curcumin colorimetric determinations of boron zirconium hydride was fairly good, but both methods lacked precision. The low precision may be attributable to inhomogeneity of the sample material.
Investigations of Analyses of Zirconium Hydride and Zirconium Oxide for Boron
Author: H. G. King
Publisher:
ISBN:
Category : Boron
Languages : en
Pages : 20
Book Description
Because of the refractory nature of zirconium hydride and zirconium oxide, analysis of these materials for trace amounts of boron may be affected adversely by loss of boron or contamination from the container during decomposition. Both sources of error may be obviated by a direct spectrochemical analysis employing either copper fluoride or sodium carbonate as pyroelectric distillation carriers. Since both the hydride and oxide appear to behave similarly in the arc with these carriers, easily prepared zirconium oxide standards were useable for analysis of both materials. Acid or fusion decompositions of the two compounds to allow separation of boron as trimethyl borate were studied. Decomposition was successful with refluxing sulfuric acid, and partly successful with sodium carbonate melts. Loss of boron during conversion of zirconium hydride to the oxide was indicated during a study of the ignition conditions, and shown conclusively by spectrographic examination of the off-gases. Contamination of the sample material by boron from new platinum ware was also found. Agreement of spectrochemical and curcumin colorimetric determinations of boron zirconium hydride was fairly good, but both methods lacked precision. The low precision may be attributable to inhomogeneity of the sample material.
Publisher:
ISBN:
Category : Boron
Languages : en
Pages : 20
Book Description
Because of the refractory nature of zirconium hydride and zirconium oxide, analysis of these materials for trace amounts of boron may be affected adversely by loss of boron or contamination from the container during decomposition. Both sources of error may be obviated by a direct spectrochemical analysis employing either copper fluoride or sodium carbonate as pyroelectric distillation carriers. Since both the hydride and oxide appear to behave similarly in the arc with these carriers, easily prepared zirconium oxide standards were useable for analysis of both materials. Acid or fusion decompositions of the two compounds to allow separation of boron as trimethyl borate were studied. Decomposition was successful with refluxing sulfuric acid, and partly successful with sodium carbonate melts. Loss of boron during conversion of zirconium hydride to the oxide was indicated during a study of the ignition conditions, and shown conclusively by spectrographic examination of the off-gases. Contamination of the sample material by boron from new platinum ware was also found. Agreement of spectrochemical and curcumin colorimetric determinations of boron zirconium hydride was fairly good, but both methods lacked precision. The low precision may be attributable to inhomogeneity of the sample material.
Investigations of Analyses of Zirconium Hydride and Zirconium Oxide for Boron
Author: H. G. King
Publisher:
ISBN:
Category : Boron
Languages : en
Pages : 17
Book Description
Because of the refractory nature of zirconium hydride and zirconium oxide, analysis of these materials for trace amounts of boron may be affected adversely by loss of boron or contamination from the container during decomposition. Both sources of error may be obviated by a direct spectrochemical analysis employing either copper fluoride or sodium carbonate as pyroelectric distillation carriers. Since both the hydride and oxide appear to behave similarly in the arc with these carriers, easily prepared zirconium oxide standards were useable for analysis of both materials. Acid or fusion decompositions of the two compounds to allow separation of boron as trimethyl borate were studied. Decomposition was successful with refluxing sulfuric acid, and partly successful with sodium carbonate melts. Loss of boron during conversion of zirconium hydride to the oxide was indicated during a study of the ignition conditions, and shown conclusively by spectrographic examination of the off-gases. Contamination of the sample material by boron from new platinum ware was also found. Agreement of spectrochemical and curcumin colorimetric determinations of boron zirconium hydride was fairly good, but both methods lacked precision. The low precision may be attributable to inhomogeneity of the sample material.
Publisher:
ISBN:
Category : Boron
Languages : en
Pages : 17
Book Description
Because of the refractory nature of zirconium hydride and zirconium oxide, analysis of these materials for trace amounts of boron may be affected adversely by loss of boron or contamination from the container during decomposition. Both sources of error may be obviated by a direct spectrochemical analysis employing either copper fluoride or sodium carbonate as pyroelectric distillation carriers. Since both the hydride and oxide appear to behave similarly in the arc with these carriers, easily prepared zirconium oxide standards were useable for analysis of both materials. Acid or fusion decompositions of the two compounds to allow separation of boron as trimethyl borate were studied. Decomposition was successful with refluxing sulfuric acid, and partly successful with sodium carbonate melts. Loss of boron during conversion of zirconium hydride to the oxide was indicated during a study of the ignition conditions, and shown conclusively by spectrographic examination of the off-gases. Contamination of the sample material by boron from new platinum ware was also found. Agreement of spectrochemical and curcumin colorimetric determinations of boron zirconium hydride was fairly good, but both methods lacked precision. The low precision may be attributable to inhomogeneity of the sample material.
Nuclear Science Abstracts
Investigations of Zirconium with Especial Reference to the Metal and Oxide
Author: John Wesley Marden
Publisher:
ISBN:
Category : Zirconium
Languages : en
Pages : 164
Book Description
Publisher:
ISBN:
Category : Zirconium
Languages : en
Pages : 164
Book Description
TID.
Investigations of Zirconium with Especial Reference to the Metal and Oxide
Author: Daniel Harrington
Publisher:
ISBN:
Category : Coal mines and mining
Languages : en
Pages : 710
Book Description
Publisher:
ISBN:
Category : Coal mines and mining
Languages : en
Pages : 710
Book Description
Catalog of Technical Reports
Author: United States. Dept. of Commerce. Office of Technical Services
Publisher:
ISBN:
Category :
Languages : en
Pages : 742
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 742
Book Description
Micromechanical Investigations of Zirconium and Zirconium Hydride
Author: David Lloyd
Publisher:
ISBN:
Category : Zirconium
Languages : en
Pages : 246
Book Description
Publisher:
ISBN:
Category : Zirconium
Languages : en
Pages : 246
Book Description
Monthly Catalog of United States Government Publications
Author: United States. Superintendent of Documents
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1640
Book Description
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1640
Book Description
Compatibility of Zirconium Hydride and Carbon Dioxide
Author: H. E. Shoemaker
Publisher:
ISBN:
Category : Carbon dioxide
Languages : en
Pages : 42
Book Description
The purpose of the investigation was to study the stability of unclad zirconium hydride as a reactor moderator in carbon dioxide coolant. This investigation was carried out as part of a program to evaluate various moderator-coolant combinations for the Maritime Gas-cooled Reactor (MGCR) Program. Particular emphasis was placed on rates of corrosion, retention of hydrogen, and dimensional stability.
Publisher:
ISBN:
Category : Carbon dioxide
Languages : en
Pages : 42
Book Description
The purpose of the investigation was to study the stability of unclad zirconium hydride as a reactor moderator in carbon dioxide coolant. This investigation was carried out as part of a program to evaluate various moderator-coolant combinations for the Maritime Gas-cooled Reactor (MGCR) Program. Particular emphasis was placed on rates of corrosion, retention of hydrogen, and dimensional stability.