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Title: Equilibrium pressures of H/sub 2/ and D/sub 2/ for different getter materials and the effect of CO impurities

Abstract

The 84% Zr--16% Al nonevaporable getter alloy has been used for a long time in vacuum technology and, more recently, has been adopted in advanced applications such as fusion technology and particle accelerators. A new getter material consisting of a Zr--V--Fe ternary alloy having interesting characteristics for these applications has also been proposed. Particularly in fusion technology hydrogen and its isotopes must be sorbed in relatively large amounts. Therefore, the equilibrium pressures of H/sub 2/ and D/sub 2/ have been investigated for the above mentioned alloys as well as for the more traditional getter material, titanium. A temperature range from 500 to 800 /sup 0/C at pressures less than about 100 Pa has been covered. Moreover, as the hydrogen isotopes will contain various gaseous impurities, of which carbon monoxide is usually the most important, the effects of this gas on the H/sub 2/ and D/sub 2/ equilibrium pressures have also been investigated.

Authors:
; ;
Publication Date:
Research Org.:
SAES Getters S.p.A., Via Gallarate 215, 20151 Milan, Italy
OSTI Identifier:
5786185
Resource Type:
Journal Article
Journal Name:
J. Vac. Sci. Technol., A; (United States)
Additional Journal Information:
Journal Volume: 1:2
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 42 ENGINEERING; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CARBON MONOXIDE; ADSORPTION; DESORPTION; DEUTERIUM; EQUILIBRIUM; VAPOR PRESSURE; GETTERS; EFFICIENCY; HYDROGEN; IRON ALLOYS; GETTERING; SORPTIVE PROPERTIES; TITANIUM; VANADIUM ALLOYS; ZIRCONIUM BASE ALLOYS; HIGH TEMPERATURE; IMPURITIES; MEDIUM VACUUM; PUMPING; TEMPERATURE EFFECTS; VERY HIGH TEMPERATURE; ALLOYS; CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; ELEMENTS; HYDROGEN ISOTOPES; ISOTOPES; LIGHT NUCLEI; METALS; NONMETALS; NUCLEI; ODD-ODD NUCLEI; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SORPTION; STABLE ISOTOPES; SURFACE PROPERTIES; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENTS; ZIRCONIUM ALLOYS; 360104* - Metals & Alloys- Physical Properties; 420700 - Engineering- Vacuum Engineering- (-1987); 700209 - Fusion Power Plant Technology- Component Development & Materials Testing

Citation Formats

Boffito, C, Ferrario, B, and Martelli, D. Equilibrium pressures of H/sub 2/ and D/sub 2/ for different getter materials and the effect of CO impurities. United States: N. p., 1983. Web. doi:10.1116/1.572089.
Boffito, C, Ferrario, B, & Martelli, D. Equilibrium pressures of H/sub 2/ and D/sub 2/ for different getter materials and the effect of CO impurities. United States. https://doi.org/10.1116/1.572089
Boffito, C, Ferrario, B, and Martelli, D. Fri . "Equilibrium pressures of H/sub 2/ and D/sub 2/ for different getter materials and the effect of CO impurities". United States. https://doi.org/10.1116/1.572089.
@article{osti_5786185,
title = {Equilibrium pressures of H/sub 2/ and D/sub 2/ for different getter materials and the effect of CO impurities},
author = {Boffito, C and Ferrario, B and Martelli, D},
abstractNote = {The 84% Zr--16% Al nonevaporable getter alloy has been used for a long time in vacuum technology and, more recently, has been adopted in advanced applications such as fusion technology and particle accelerators. A new getter material consisting of a Zr--V--Fe ternary alloy having interesting characteristics for these applications has also been proposed. Particularly in fusion technology hydrogen and its isotopes must be sorbed in relatively large amounts. Therefore, the equilibrium pressures of H/sub 2/ and D/sub 2/ have been investigated for the above mentioned alloys as well as for the more traditional getter material, titanium. A temperature range from 500 to 800 /sup 0/C at pressures less than about 100 Pa has been covered. Moreover, as the hydrogen isotopes will contain various gaseous impurities, of which carbon monoxide is usually the most important, the effects of this gas on the H/sub 2/ and D/sub 2/ equilibrium pressures have also been investigated.},
doi = {10.1116/1.572089},
url = {https://www.osti.gov/biblio/5786185}, journal = {J. Vac. Sci. Technol., A; (United States)},
number = ,
volume = 1:2,
place = {United States},
year = {1983},
month = {4}
}