Thermal stability and hydrogen absorption characteristics of palladium-yttrium nanoalloys

Nanostructured alloys consisting of 10, 20 and 30 at.% Y in Pd were synthesized by high-energy ball-milling to determine the thermal stability and hydriding behavior of different alloy compositions. Adding 10 at.% Y to the Pd resulted in a nanoalloy that was stable against grain growth to above 400°...

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Bibliographic Details
Published in:Acta materialia 1996-09, Vol.44 (9), p.3847-3854
Main Authors: Bryden, K.J., Ying, J.Y.
Format: Article
Language:English
Subjects:
Applied sciences
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Materials science
Materials synthesis
materials processing
Metals. Metallurgy
Physics
Powder processing: powder metallurgy, compaction, sintering, mechanical alloying, and granulation
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Summary:Nanostructured alloys consisting of 10, 20 and 30 at.% Y in Pd were synthesized by high-energy ball-milling to determine the thermal stability and hydriding behavior of different alloy compositions. Adding 10 at.% Y to the Pd resulted in a nanoalloy that was stable against grain growth to above 400°C, as compared to 200°C for ball-milled pure Pd. Adding 20 and 30 at.% Y resulted in a supersaturated solution of Y in Pd and in the Pd3Y intermetallic phase, respectively. Both the supersaturated solution and the intermetallic phase exhibited stability against grain growth to above 400°C and interesting phase segregation behavior in heat treatment. In addition to stabilizing against grain growth, doping the Pd with Y also suppressed the α → β phase transition.
ISSN:1359-6454
1873-2453
DOI:10.1016/1359-6454(96)00020-1