Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Interface pinning causes the hysteresis of the hydride transformation in binary metal hydrides

Journal Article · · Physical Review Materials
 [1];  [2];  [3]
  1. California Institute of Technology (CalTech), Pasadena, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource (SSRL)
  2. Northwestern Univ., Evanston, IL (United States). Dept. of Materials Science and Engineering; Northwestern Univ., Evanston, IL (United States). Engineering Sciences and Applied Mathematics
  3. California Institute of Technology (CalTech), Pasadena, CA (United States)
Hydriding and dehydriding transitions in bulk and nanocrystalline binary metal hydrides were studied using the Pd-H model system by measuring pressure-composition isotherms with in situ x-ray diffractometry. Nanocrystalline Pd showed a smaller pressure hysteresis, solvus hysteresis, and hysteresis in lattice parameter, compared to bulk Pd. The time-dependence of pressure equilibration was measured after dosing with aliquots of hydrogen, giving equilibration times that were much faster in the single-phase regions than in the two-phase plateaus. In the broad two-phase plateaus, the pressure relaxations were exponential functions of time. An explanation of hysteresis is developed that is based on a dissipative potential barrier that impedes the motion of the interface due to interactions between lattice defects and the two-phase interface. The exponential pressure relaxations and hysteresis are consistent for this mechanism. For a simple model of the pinning potential, the potential barrier maximum is an order of magnitude less than typical grain boundary energies. These pinning effects are substantially different in the nanocrystalline Pd, suggesting differences in the hydriding mechanism.
Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1778217
Journal Information:
Physical Review Materials, Journal Name: Physical Review Materials Journal Issue: 1 Vol. 5; ISSN 2475-9953
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (42)

Magnetic Susceptibility and Equilibrium Diagram of PdH n journal January 1973
Phase equilibrium in two-phase coherent solids journal July 1987
Metal hydride hydrogen compression: recent advances and future prospects journal March 2016
Coherent phase decomposition in the Pd–H system journal January 2020
Coherent fluctuations and nucleation in isotropic solids journal October 1962
An in situ electron microscope study of precipitation in palladium-hydrogen alloys journal May 1979
X-ray studies of the α/β miscibility gaps of some palladium solid solution-hydrogen systems journal June 1975
The β → α phase transformation in palladium-hydrogen alloys journal November 1976
Hysteresis in metal hydrides journal January 1982
New experiments on and interpretations of hysteresis effects of Pd-D2 and Pd-H2 journal March 1987
Hysteresis in metal/hydrogen systems journal April 1980
The stored energy of cold work journal January 1973
Hysteresis in solid state reactions journal January 1995
Kinetics of F.C.C. → B.C.C. heterogeneous martensitic nucleation—I. The critical driving force for athermal nucleation journal October 1994
The Thermodynamics of Elastically Stressed Crystals book May 2004
Distributions of hydrogen and strains in LaNi5 and LaNi4.75Sn0.25 journal March 2002
Hydrogen sorption in elastically soft stabilized Pd-clusters journal December 1999
Thermodynamics of open two-phase systems with coherent interfaces: Application to metal–hydrogen systems journal January 2006
Survey of computed grain boundary properties in face-centered cubic metals: I. Grain boundary energy journal August 2009
Grain boundary energy function for fcc metals journal February 2014
Palladium nanoparticles “breathe” hydrogen; a surgical view with X-ray diffraction journal August 2010
Metal hydride hydrogen compressors: A review journal April 2014
Visualizing Facet-Dependent Hydrogenation Dynamics in Individual Palladium Nanoparticles journal August 2018
Nanosize Effects on Hydrogen Storage in Palladium journal March 2008
Direct visualization of hydrogen absorption dynamics in individual palladium nanoparticles journal January 2017
Thermodynamics of the hybrid interaction of hydrogen with palladium nanoparticles journal November 2015
Three-dimensional imaging of dislocation dynamics during the hydriding phase transformation journal January 2017
In situ click chemistry generation of cyclooxygenase-2 inhibitors journal February 2017
In-situ visualization of solute-driven phase coexistence within individual nanorods journal May 2018
Hysteresis scans for Pd–H and Pd–alloy–H systems journal January 2002
High capacity V-based metal hydride electrodes for rechargeable batteries journal January 2017
Fundamental Equations of State for Parahydrogen, Normal Hydrogen, and Orthohydrogen journal September 2009
Phase equilibrium and stability of elastically stressed heteroepitaxial thin films journal August 1988
Shear modulus and internal friction in nanometre-sized polycrystalline palladium journal March 1991
A low-temperature X-ray diffraction study of Pd and some Pd-H alloys journal January 1978
Solubility of hydrogen in single-sized palladium clusters journal July 2001
Thermodynamics of Open Two-Phase Systems with Coherent Interfaces journal March 1995
Athermal Resistance to Interface Motion in the Phase-Field Theory of Microstructure Evolution journal December 2007
GSAS-II : the genesis of a modern open-source all purpose crystallography software package journal March 2013
Coherent phase equilibria in systems possessing a consolute critical point journal June 1989
Recent advances in metal hydrides for clean energy applications journal June 2013
Metallic Hydrides I: Hydrogen Storage and Other Gas-Phase Applications journal September 2002

Similar Records

The disappearance of hysteresis for the hydride phase transition in palladium-nickel alloys
Journal Article · Sun Sep 01 00:00:00 EDT 1991 · Scripta Metallurgica; (United States) · OSTI ID:5502561

Thermodynamics of coherent open systems with applications to hydrides: The physical origin of hysteresis in absorption-desorption isotherms. [Final report]
Technical Report · Fri Dec 30 23:00:00 EST 1994 · OSTI ID:435230

Mechanical properties of palladium and palladium hydride
Journal Article · Fri Feb 14 23:00:00 EST 1992 · Scripta Metallurgica; (United States) · OSTI ID:5574329

Related Subjects