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Title: DELTA-PHASE ZIRCONIUM HYDRIDE AS A SOLID MODERATOR

Abstract

In a suady of the preparation and properties of deltaphase zirconium hydride it was found that large, sound bodies of the hydride can be prepared by direct combination of the elements if the rate of the reaction is retarded by limiting the supply of available hydrogen. Specimens up to 1-in. diameter were prepared using this technique. Because delta-phase zirconium hydride does not readily form eutectics with iron- and nickel-base alloys below 1800 deg F these materials may be utilized for cladding the hydride. Delta-phase zirconium hydride is unaffected by exposure to liquid NaK or to nitrogen gas at temperatures below 1000 deg F. The hot hardness of deltaphase zirconium hydride is about 130 kg per mm/sup 2/ at room temperature and 40 kg per mm/sup 2/ at 1500 deg F. The mean coefficient of thermal expansion (68 to 1337F) is 6.5 x 10/sup -6/ per deg F. The thermal conductivity varies from 5.7 Btu/(ft)(hr)(F) at 300 deg F to 5.1 Btu/(ft)(hr)(F) at 1300 deg F. (auth)

Authors:
Publication Date:
Research Org.:
Battelle Memorial Inst., Columbus, Ohio
OSTI Identifier:
4259310
Report Number(s):
BMI-1243
NSA Number:
NSA-13-007727
DOE Contract Number:  
W-7405-ENG-92
Resource Type:
Technical Report
Resource Relation:
Other Information: Decl. Feb. 11, 1959. Orig. Receipt Date: 31-DEC-59
Country of Publication:
United States
Language:
English
Subject:
METALLURGY AND CERAMICS; CANNING; CHEMICAL REACTIONS; ELEMENTS; EUTECTICS; EXPANSION; HARDNESS; HIGH TEMPERATURE; HYDROGEN; IRON ALLOYS; LIQUID METALS; MODERATORS; NICKEL ALLOYS; NITROGEN; PHASE DIAGRAMS; PREPARATION; SOLIDS; TEMPERATURE; THERMAL CONDUCTIVITY; THICKNESS; ZIRCONIUM HYDRIDES

Citation Formats

Vetrano, J. B.. DELTA-PHASE ZIRCONIUM HYDRIDE AS A SOLID MODERATOR. United States: N. p., 1957. Web. doi:10.2172/4259310.
Vetrano, J. B.. DELTA-PHASE ZIRCONIUM HYDRIDE AS A SOLID MODERATOR. United States. https://doi.org/10.2172/4259310
Vetrano, J. B.. Wed . "DELTA-PHASE ZIRCONIUM HYDRIDE AS A SOLID MODERATOR". United States. https://doi.org/10.2172/4259310. https://www.osti.gov/servlets/purl/4259310.
@article{osti_4259310,
title = {DELTA-PHASE ZIRCONIUM HYDRIDE AS A SOLID MODERATOR},
author = {Vetrano, J. B.},
abstractNote = {In a suady of the preparation and properties of deltaphase zirconium hydride it was found that large, sound bodies of the hydride can be prepared by direct combination of the elements if the rate of the reaction is retarded by limiting the supply of available hydrogen. Specimens up to 1-in. diameter were prepared using this technique. Because delta-phase zirconium hydride does not readily form eutectics with iron- and nickel-base alloys below 1800 deg F these materials may be utilized for cladding the hydride. Delta-phase zirconium hydride is unaffected by exposure to liquid NaK or to nitrogen gas at temperatures below 1000 deg F. The hot hardness of deltaphase zirconium hydride is about 130 kg per mm/sup 2/ at room temperature and 40 kg per mm/sup 2/ at 1500 deg F. The mean coefficient of thermal expansion (68 to 1337F) is 6.5 x 10/sup -6/ per deg F. The thermal conductivity varies from 5.7 Btu/(ft)(hr)(F) at 300 deg F to 5.1 Btu/(ft)(hr)(F) at 1300 deg F. (auth)},
doi = {10.2172/4259310},
url = {https://www.osti.gov/biblio/4259310}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1957},
month = {12}
}