摘要
The negative effects of hydrogen embrittlement on metallic systems have been investigated through determination of the mechanical properties of two metallic systems that were exposed to hydrogen. An assessment of the effects of hydrogen absorption/desorption cycling on the tensile strength, ductility, and microhardness of pure palladium and the alloy palladium-silver (25 weight% silver) has been undertaken. The variables that are the focus of the study are the amount of hydrogen absorbed by the metal, deuterium isotope effect, number of hydrogen absorption/desorption cycles, and the hydrogen exposure temperature. Under all conditions studied, the mechanical properties of pure palladium were significantly altered as a result of hydrogen exposure, with significant hydrogen embrittlement occurring. In contrast, the mechanical properties of the palladium-silver alloy showed little alteration as a result of hydrogen exposure, including virtually no occurrence of hydrogen embrittlement.
The negative effects of hydrogen embrittlement on metallic systems have been investigated through determination of the mechanical properties of two metallic systems that were exposed to hydrogen. An assessment of the effects of hydrogen absorption/desorption cycling on the tensile strength, ductility, and microhardness of pure palladium and the alloy palladium-silver (25 weight% silver) has been undertaken. The variables that are the focus of the study are the amount of hydrogen absorbed by the metal, deuterium isotope effect, number of hydrogen absorption/desorption cycles, and the hydrogen exposure temperature. Under all conditions studied, the mechanical properties of pure palladium were significantly altered as a result of hydrogen exposure, with significant hydrogen embrittlement occurring. In contrast, the mechanical properties of the palladium-silver alloy showed little alteration as a result of hydrogen exposure, including virtually no occurrence of hydrogen embrittlement.
作者
Gilberto Jimenez
Erik Dillon
Joseph Dahlmeyer
Travis Garrison
Tyler Garrison
Sedna Darkey
Kyle Wald
Joseph Kubik
Danielle Paciulli
Mustakim Talukder
Joshua Nott
Maria Ferrer
Joseph Prinke
Priscilla Villaneuva
Fred Massicotte
Karim Rebeiz
Steve Nesbit
Andrew Craft
Gilberto Jimenez;Erik Dillon;Joseph Dahlmeyer;Travis Garrison;Tyler Garrison;Sedna Darkey;Kyle Wald;Joseph Kubik;Danielle Paciulli;Mustakim Talukder;Joshua Nott;Maria Ferrer;Joseph Prinke;Priscilla Villaneuva;Fred Massicotte;Karim Rebeiz;Steve Nesbit;Andrew Craft(Department of Chemistry, University of Hartford, West Hartford, CT, USA;Institute of Materials Science, University of Connecticut, Storrs, CT, USA;College of Engineering, Phoenicia University, Beirut, Lebanon;Department of Mechanical Engineering, Lafayette College, Easton, PA, USA)
