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Daniel Guay - One of the best experts on this subject based on the ideXlab platform.
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Hydrogen Solubility of bcc PdCu and PdCuAg alloys prepared by mechanical alloying
Journal of Alloys and Compounds, 2017Co-Authors: Jacques Tosques, Manuel H. Martin, Lionel Roué, Bruno Honrado Guerreiro, Daniel GuayAbstract:Abstract Face-centered cubic (fcc) Pd 100−x−y Cu x Ag y alloys (with x ranging between 0 and 65 at.% and y ranging between 0 and 20 at.%) were prepared by mechanical alloying of elemental metal powders in the presence of 2 wt% NaCl acting as a process control agent. Transition to the body-centered cubic (bcc) phase was achieved for some compositions by a subsequent annealing treatment at 400 °C. The resulting solids were consolidated into pellets by cold-pressing and their Hydrogen Solubility was assessed by chronoamperometry in alkaline aqueous solution. Hydrogen Solubility increased with palladium content for both fcc and bcc phases. Replacing copper with silver resulted in an increase in Hydrogen Solubility of the bcc PdCuAg alloys.
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Hydrogen Solubility of Magnetron Co-Sputtered FCC and BCC PdCuAu Thin Films
The Journal of Physical Chemistry C, 2016Co-Authors: Bruno Honrado Guerreiro, Manuel H. Martin, Lionel Roué, Daniel GuayAbstract:Palladium–copper–gold (PdCuAu) ternary alloy membranes are promising alternatives to pure palladium for the purpose of Hydrogen separation processes. In the current work, PdCuAu ternary alloys were prepared by magnetron cosputtering deposition. All as-deposited samples showed face-centered cubic (fcc) structure in the composition range of study: 30 ≤ [Pd] ≤ 100, 0 ≤ [Cu] ≤ 66, and 0 ≤ [Au] ≤ 6 (in at%). The body-centered cubic (bcc) phase was prepared from the fcc samples by annealing for 4 h at 400 °C under Ar and was identified in alloys with Pd content between 40 and 46 at%. The Hydrogen Solubility was evaluated for both fcc and bcc phases using an electrochemical method and an electrochemical in situ X-ray diffraction method, respectively. The alloys’ Hydrogen Solubility increases with the lattice parameter and palladium content, and decreases with crystallite size and phase transition to bcc. In the same range of composition, the Hydrogen Solubility of the fcc and bcc phases vary in the same way with...
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Hydrogen Solubility in PdCuAu alloy thin films prepared by electrodeposition
International Journal of Hydrogen Energy, 2014Co-Authors: Bruno Honrado Guerreiro, Manuel H. Martin, Lionel Roué, Daniel GuayAbstract:Abstract PdCuAu alloy thin films were prepared by co-electrodeposition over a large composition range ([Pd] = 14–74 at.%, [Cu] = 2–82 at.%, [Au] = 0–66 at.%) and then annealed at 400 °C. The influence of the alloy composition and annealing treatment on the crystalline structure, film morphology and Hydrogen Solubility (at room temperature) of the various PdCuAu alloys was investigated by means of X-ray diffraction (XRD), scanning electron microscopy (SEM) and electrochemical method, respectively. All the as-deposited samples displayed a monophased face-centered-cubic (fcc) structure. After annealing, a face-centered-cubic to body-centered-cubic (bcc) phase transition was observed. Thanks to the stabilizing effect of Au on the bcc structure this phase transition occurs over a large composition range. The Hydrogen Solubility increased with the Pd content in the alloy and with the Au content at a constant Pd concentration. The fcc to bcc phase transformation resulted in a major decrease of the Hydrogen Solubility in the alloy.
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measurements of Hydrogen Solubility in cuxpd100 x thin films
Electrochimica Acta, 2013Co-Authors: Manuel H. Martin, Jules Galipaud, Alix Tranchot, Lionel Roué, Daniel GuayAbstract:Abstract Hydrogen Solubility in CuPd thin films was determined using a new electrochemical setup. The Cu x Pd 100− x alloy thin films were prepared by pulsed potential co-electrodeposition and have a face-centered cubic (FCC) structure over the entire composition range (20 ≤ x ≤ 100). A subsequent heat-treatment at 400 °C induced a FCC to body-centered cubic (BCC) phase transition without any significant surface segregation, as illustrated in the case of the Cu 59 Pd 41 thin film. It was demonstrated that the electrochemical setup permits, thanks to a constant renewal of the electrolyte, to minimize the anodic charge associated with the oxidation of dissolved H 2 , and thus preventing an overestimation of the Hydrogen Solubility in these compounds. From electrochemical potential-composition isotherms performed in 0.1 M NaOH, it was shown that the maximum Hydrogen Solubility, ( H / M ) max , decreases with the Cu concentration in FCC PdCu thin films (from 67 at.% for pure Pd to 3.6 at.% for Cu 88 Pd 22 ). A comparison of the electrochemical isotherms of FCC and BCC Cu 59 Pd 41 thin films confirmed that the maximum Hydrogen Solubility is much lower (by a factor of 5) and is reached at a more negative potential (higher Hydrogen pressure) for the BCC structure.
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Measurements of Hydrogen Solubility in CuxPd100−x thin films
Electrochimica Acta, 2013Co-Authors: Manuel H. Martin, Jules Galipaud, Alix Tranchot, Lionel Roué, Daniel GuayAbstract:Abstract Hydrogen Solubility in CuPd thin films was determined using a new electrochemical setup. The Cu x Pd 100− x alloy thin films were prepared by pulsed potential co-electrodeposition and have a face-centered cubic (FCC) structure over the entire composition range (20 ≤ x ≤ 100). A subsequent heat-treatment at 400 °C induced a FCC to body-centered cubic (BCC) phase transition without any significant surface segregation, as illustrated in the case of the Cu 59 Pd 41 thin film. It was demonstrated that the electrochemical setup permits, thanks to a constant renewal of the electrolyte, to minimize the anodic charge associated with the oxidation of dissolved H 2 , and thus preventing an overestimation of the Hydrogen Solubility in these compounds. From electrochemical potential-composition isotherms performed in 0.1 M NaOH, it was shown that the maximum Hydrogen Solubility, ( H / M ) max , decreases with the Cu concentration in FCC PdCu thin films (from 67 at.% for pure Pd to 3.6 at.% for Cu 88 Pd 22 ). A comparison of the electrochemical isotherms of FCC and BCC Cu 59 Pd 41 thin films confirmed that the maximum Hydrogen Solubility is much lower (by a factor of 5) and is reached at a more negative potential (higher Hydrogen pressure) for the BCC structure.
Kenichi Hashizume - One of the best experts on this subject based on the ideXlab platform.
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Using a tritium imaging plate technique to measure the Hydrogen Solubility and diffusivity of Zr-doped BaInO2.5
Fusion Science and Technology, 2017Co-Authors: Kenichi Hashizume, Yusaku OkiAbstract:AbstractA tritium imaging plate technique (TIPT) was used to measure the Hydrogen Solubility and diffusivity of a proton-conducting material, Zr-doped BaInO2.5. After being exposured to tritiated water vapor, the specimen was cut into halves and photo-stimulated luminescence (PSL) images of the cross-section of the cut specimen were obtained. Based on the PSL distribution profiles and intensities, Hydrogen diffusivity and Solubility in the specimens were determined. The Hydrogen Solubility and diffusivity in Zr-doped BaInO2.5 clearly depended on the content of Zr. This characteristic of the Zr content is in agreement with the Zr-content dependency of its proton conductivity, which was measured by an alternating current (AC) impedance method.
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Hydrogen Solubility and diffusivity in a barium cerate protonic conductor using tritium imaging plate technique
Solid State Ionics, 2015Co-Authors: K. Yamashita, T. Otsuka, Kenichi HashizumeAbstract:Abstract A tritium imaging plate technique has been applied to visualize Hydrogen distribution and examine Hydrogen Solubility and diffusivity in a proton-conducting oxide, Y-doped BaCeO 3 (BaCe 0.9 Y 0.1 O 3 − α ). Tritium charging of the BaCe 0.9 Y 0.1 O 3 − α specimens was carried out by a gas absorption method using partially tritiated water vapor (HTO, 3 kPa, T/H ~ 10 − 6 ) at temperatures ranging from 673 K to 873 K for a given time. After charging, tritium distributions of the surface and cross section of the halved specimens were visualized using an imaging plate technique. From the tritium concentration and distributions of the surface and cross section, Hydrogen Solubility and Hydrogen (tritium) diffusivity of the BaCe 0.9 Y 0.1 O 3 − α specimens were determined.
Manuel H. Martin - One of the best experts on this subject based on the ideXlab platform.
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Hydrogen Solubility of bcc PdCu and PdCuAg alloys prepared by mechanical alloying
Journal of Alloys and Compounds, 2017Co-Authors: Jacques Tosques, Manuel H. Martin, Lionel Roué, Bruno Honrado Guerreiro, Daniel GuayAbstract:Abstract Face-centered cubic (fcc) Pd 100−x−y Cu x Ag y alloys (with x ranging between 0 and 65 at.% and y ranging between 0 and 20 at.%) were prepared by mechanical alloying of elemental metal powders in the presence of 2 wt% NaCl acting as a process control agent. Transition to the body-centered cubic (bcc) phase was achieved for some compositions by a subsequent annealing treatment at 400 °C. The resulting solids were consolidated into pellets by cold-pressing and their Hydrogen Solubility was assessed by chronoamperometry in alkaline aqueous solution. Hydrogen Solubility increased with palladium content for both fcc and bcc phases. Replacing copper with silver resulted in an increase in Hydrogen Solubility of the bcc PdCuAg alloys.
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Hydrogen Solubility of Magnetron Co-Sputtered FCC and BCC PdCuAu Thin Films
The Journal of Physical Chemistry C, 2016Co-Authors: Bruno Honrado Guerreiro, Manuel H. Martin, Lionel Roué, Daniel GuayAbstract:Palladium–copper–gold (PdCuAu) ternary alloy membranes are promising alternatives to pure palladium for the purpose of Hydrogen separation processes. In the current work, PdCuAu ternary alloys were prepared by magnetron cosputtering deposition. All as-deposited samples showed face-centered cubic (fcc) structure in the composition range of study: 30 ≤ [Pd] ≤ 100, 0 ≤ [Cu] ≤ 66, and 0 ≤ [Au] ≤ 6 (in at%). The body-centered cubic (bcc) phase was prepared from the fcc samples by annealing for 4 h at 400 °C under Ar and was identified in alloys with Pd content between 40 and 46 at%. The Hydrogen Solubility was evaluated for both fcc and bcc phases using an electrochemical method and an electrochemical in situ X-ray diffraction method, respectively. The alloys’ Hydrogen Solubility increases with the lattice parameter and palladium content, and decreases with crystallite size and phase transition to bcc. In the same range of composition, the Hydrogen Solubility of the fcc and bcc phases vary in the same way with...
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Hydrogen Solubility in PdCuAu alloy thin films prepared by electrodeposition
International Journal of Hydrogen Energy, 2014Co-Authors: Bruno Honrado Guerreiro, Manuel H. Martin, Lionel Roué, Daniel GuayAbstract:Abstract PdCuAu alloy thin films were prepared by co-electrodeposition over a large composition range ([Pd] = 14–74 at.%, [Cu] = 2–82 at.%, [Au] = 0–66 at.%) and then annealed at 400 °C. The influence of the alloy composition and annealing treatment on the crystalline structure, film morphology and Hydrogen Solubility (at room temperature) of the various PdCuAu alloys was investigated by means of X-ray diffraction (XRD), scanning electron microscopy (SEM) and electrochemical method, respectively. All the as-deposited samples displayed a monophased face-centered-cubic (fcc) structure. After annealing, a face-centered-cubic to body-centered-cubic (bcc) phase transition was observed. Thanks to the stabilizing effect of Au on the bcc structure this phase transition occurs over a large composition range. The Hydrogen Solubility increased with the Pd content in the alloy and with the Au content at a constant Pd concentration. The fcc to bcc phase transformation resulted in a major decrease of the Hydrogen Solubility in the alloy.
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measurements of Hydrogen Solubility in cuxpd100 x thin films
Electrochimica Acta, 2013Co-Authors: Manuel H. Martin, Jules Galipaud, Alix Tranchot, Lionel Roué, Daniel GuayAbstract:Abstract Hydrogen Solubility in CuPd thin films was determined using a new electrochemical setup. The Cu x Pd 100− x alloy thin films were prepared by pulsed potential co-electrodeposition and have a face-centered cubic (FCC) structure over the entire composition range (20 ≤ x ≤ 100). A subsequent heat-treatment at 400 °C induced a FCC to body-centered cubic (BCC) phase transition without any significant surface segregation, as illustrated in the case of the Cu 59 Pd 41 thin film. It was demonstrated that the electrochemical setup permits, thanks to a constant renewal of the electrolyte, to minimize the anodic charge associated with the oxidation of dissolved H 2 , and thus preventing an overestimation of the Hydrogen Solubility in these compounds. From electrochemical potential-composition isotherms performed in 0.1 M NaOH, it was shown that the maximum Hydrogen Solubility, ( H / M ) max , decreases with the Cu concentration in FCC PdCu thin films (from 67 at.% for pure Pd to 3.6 at.% for Cu 88 Pd 22 ). A comparison of the electrochemical isotherms of FCC and BCC Cu 59 Pd 41 thin films confirmed that the maximum Hydrogen Solubility is much lower (by a factor of 5) and is reached at a more negative potential (higher Hydrogen pressure) for the BCC structure.
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Measurements of Hydrogen Solubility in CuxPd100−x thin films
Electrochimica Acta, 2013Co-Authors: Manuel H. Martin, Jules Galipaud, Alix Tranchot, Lionel Roué, Daniel GuayAbstract:Abstract Hydrogen Solubility in CuPd thin films was determined using a new electrochemical setup. The Cu x Pd 100− x alloy thin films were prepared by pulsed potential co-electrodeposition and have a face-centered cubic (FCC) structure over the entire composition range (20 ≤ x ≤ 100). A subsequent heat-treatment at 400 °C induced a FCC to body-centered cubic (BCC) phase transition without any significant surface segregation, as illustrated in the case of the Cu 59 Pd 41 thin film. It was demonstrated that the electrochemical setup permits, thanks to a constant renewal of the electrolyte, to minimize the anodic charge associated with the oxidation of dissolved H 2 , and thus preventing an overestimation of the Hydrogen Solubility in these compounds. From electrochemical potential-composition isotherms performed in 0.1 M NaOH, it was shown that the maximum Hydrogen Solubility, ( H / M ) max , decreases with the Cu concentration in FCC PdCu thin films (from 67 at.% for pure Pd to 3.6 at.% for Cu 88 Pd 22 ). A comparison of the electrochemical isotherms of FCC and BCC Cu 59 Pd 41 thin films confirmed that the maximum Hydrogen Solubility is much lower (by a factor of 5) and is reached at a more negative potential (higher Hydrogen pressure) for the BCC structure.
Mario Ramírez-de-santiago - One of the best experts on this subject based on the ideXlab platform.
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Predictive method of Hydrogen Solubility in heavy petroleum fractions using EOS/GE and group contributions methods
Fuel, 2018Co-Authors: Humberto Aguilar-cisneros, Verónica Uribe-vargas, Bernardo Carreón-calderón, José Manuel Domínguez-esquivel, Mario Ramírez-de-santiagoAbstract:Abstract Hydrogen Solubility in heavy petroleum fractions was modelled with Peng-Robinson cubic equation of state combined with the UNIFAC solution model (EoS/GE) through a modified Huron-Vidal mixing rule (MHV1). As critical properties and molecular structure of heavy petroleum fractions are entering parameters in this thermodynamic model, the thermodynamic characterization procedure by contribution of functional groups proposed by Carreon-Calderon et al. (2012) was taken as starting point in order to develop a predictive method for estimating Hydrogen Solubility in such fractions. The functional groups considered in the original work were reviewed and modified, improving predictions and avoiding adjustment of model parameters. Besides, a procedure of mass distribution for the Hydrogen-carbon ratio (HCR) of the petroleum fraction is proposed so that the Hydrogen Solubility can be estimated when more than one heavy petroleum fraction is present. This approach was tested with twelve heavy petroleum fractions in a wide range of pressure and temperature. These fractions include coal liquids, refinery products and a bitumen from Athabasca. The total average deviation was about 15%.
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Hydrogen Solubility in Heavy Undefined Petroleum Fractions Using Group Contributions Methods
Oil & Gas Science and Technology – Revue d’IFP Energies nouvelles, 2017Co-Authors: Humberto Aguilar-cisneros, Verónica Uribe-vargas, Bernardo Carreón-calderón, José Manuel Domínguez-esquivel, Mario Ramírez-de-santiagoAbstract:Hydrogen Solubility in heavy undefined petroleum fractions is estimated by taking as starting point a method of characterization based on functional groups []. Such method provides properties entering into equations of states and molecular pseudostructures formed by non-integer numbers of functional groups. Using Vapor-Liquid Equilibria (VLE) data from binary mixtures of known compounds, interaction parameters between Hydrogen and the calculated functional groups were estimated. Besides, the incorporation of the Hydrogen-carbon ratio of the undefined petroleum fractions into the method allows the corresponding Hydrogen Solubility to be properly estimated. This procedure was tested with seven undefined petroleum fractions from 27 to 6 API over wide ranges of pressure and temperature (323.15 to 623.15 K). The results seem to be in good agreement with experimental data (overall Relative Average Deviation, RAD
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Hydrogen Solubility in Heavy Undefined Petroleum Fractions Using Group Contributions Methods
Oil & Gas Science and Technology - Revue d'IFP Energies nouvelles, 2017Co-Authors: Humberto Aguilar-cisneros, Verónica Uribe-vargas, Bernardo Carreón-calderón, José Manuel Domínguez-esquivel, Mario Ramírez-de-santiagoAbstract:Hydrogen Solubility in heavy undefined petroleum fractions is estimated by taking as starting point a method of characterization based on functional groups [Carreón-Calderón et al. (2012) Ind. Eng. Chem. Res. 51, 14188-14198 ]. Such method provides properties entering into equations of states and molecular pseudostructures formed by non-integer numbers of functional groups. Using Vapor-Liquid Equilibria (VLE) data from binary mixtures of known compounds, interaction parameters between Hydrogen and the calculated functional groups were estimated. Besides, the incorporation of the Hydrogen-carbon ratio of the undefined petroleum fractions into the method allows the corresponding Hydrogen Solubility to be properly estimated. This procedure was tested with seven undefined petroleum fractions from 27 to 6 API over wide ranges of pressure and temperature (323.15 to 623.15 K). The results seem to be in good agreement with experimental data (overall Relative Average Deviation, RAD
Lionel Roué - One of the best experts on this subject based on the ideXlab platform.
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Hydrogen Solubility of bcc PdCu and PdCuAg alloys prepared by mechanical alloying
Journal of Alloys and Compounds, 2017Co-Authors: Jacques Tosques, Manuel H. Martin, Lionel Roué, Bruno Honrado Guerreiro, Daniel GuayAbstract:Abstract Face-centered cubic (fcc) Pd 100−x−y Cu x Ag y alloys (with x ranging between 0 and 65 at.% and y ranging between 0 and 20 at.%) were prepared by mechanical alloying of elemental metal powders in the presence of 2 wt% NaCl acting as a process control agent. Transition to the body-centered cubic (bcc) phase was achieved for some compositions by a subsequent annealing treatment at 400 °C. The resulting solids were consolidated into pellets by cold-pressing and their Hydrogen Solubility was assessed by chronoamperometry in alkaline aqueous solution. Hydrogen Solubility increased with palladium content for both fcc and bcc phases. Replacing copper with silver resulted in an increase in Hydrogen Solubility of the bcc PdCuAg alloys.
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Hydrogen Solubility of Magnetron Co-Sputtered FCC and BCC PdCuAu Thin Films
The Journal of Physical Chemistry C, 2016Co-Authors: Bruno Honrado Guerreiro, Manuel H. Martin, Lionel Roué, Daniel GuayAbstract:Palladium–copper–gold (PdCuAu) ternary alloy membranes are promising alternatives to pure palladium for the purpose of Hydrogen separation processes. In the current work, PdCuAu ternary alloys were prepared by magnetron cosputtering deposition. All as-deposited samples showed face-centered cubic (fcc) structure in the composition range of study: 30 ≤ [Pd] ≤ 100, 0 ≤ [Cu] ≤ 66, and 0 ≤ [Au] ≤ 6 (in at%). The body-centered cubic (bcc) phase was prepared from the fcc samples by annealing for 4 h at 400 °C under Ar and was identified in alloys with Pd content between 40 and 46 at%. The Hydrogen Solubility was evaluated for both fcc and bcc phases using an electrochemical method and an electrochemical in situ X-ray diffraction method, respectively. The alloys’ Hydrogen Solubility increases with the lattice parameter and palladium content, and decreases with crystallite size and phase transition to bcc. In the same range of composition, the Hydrogen Solubility of the fcc and bcc phases vary in the same way with...
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Hydrogen Solubility in PdCuAu alloy thin films prepared by electrodeposition
International Journal of Hydrogen Energy, 2014Co-Authors: Bruno Honrado Guerreiro, Manuel H. Martin, Lionel Roué, Daniel GuayAbstract:Abstract PdCuAu alloy thin films were prepared by co-electrodeposition over a large composition range ([Pd] = 14–74 at.%, [Cu] = 2–82 at.%, [Au] = 0–66 at.%) and then annealed at 400 °C. The influence of the alloy composition and annealing treatment on the crystalline structure, film morphology and Hydrogen Solubility (at room temperature) of the various PdCuAu alloys was investigated by means of X-ray diffraction (XRD), scanning electron microscopy (SEM) and electrochemical method, respectively. All the as-deposited samples displayed a monophased face-centered-cubic (fcc) structure. After annealing, a face-centered-cubic to body-centered-cubic (bcc) phase transition was observed. Thanks to the stabilizing effect of Au on the bcc structure this phase transition occurs over a large composition range. The Hydrogen Solubility increased with the Pd content in the alloy and with the Au content at a constant Pd concentration. The fcc to bcc phase transformation resulted in a major decrease of the Hydrogen Solubility in the alloy.
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measurements of Hydrogen Solubility in cuxpd100 x thin films
Electrochimica Acta, 2013Co-Authors: Manuel H. Martin, Jules Galipaud, Alix Tranchot, Lionel Roué, Daniel GuayAbstract:Abstract Hydrogen Solubility in CuPd thin films was determined using a new electrochemical setup. The Cu x Pd 100− x alloy thin films were prepared by pulsed potential co-electrodeposition and have a face-centered cubic (FCC) structure over the entire composition range (20 ≤ x ≤ 100). A subsequent heat-treatment at 400 °C induced a FCC to body-centered cubic (BCC) phase transition without any significant surface segregation, as illustrated in the case of the Cu 59 Pd 41 thin film. It was demonstrated that the electrochemical setup permits, thanks to a constant renewal of the electrolyte, to minimize the anodic charge associated with the oxidation of dissolved H 2 , and thus preventing an overestimation of the Hydrogen Solubility in these compounds. From electrochemical potential-composition isotherms performed in 0.1 M NaOH, it was shown that the maximum Hydrogen Solubility, ( H / M ) max , decreases with the Cu concentration in FCC PdCu thin films (from 67 at.% for pure Pd to 3.6 at.% for Cu 88 Pd 22 ). A comparison of the electrochemical isotherms of FCC and BCC Cu 59 Pd 41 thin films confirmed that the maximum Hydrogen Solubility is much lower (by a factor of 5) and is reached at a more negative potential (higher Hydrogen pressure) for the BCC structure.
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Measurements of Hydrogen Solubility in CuxPd100−x thin films
Electrochimica Acta, 2013Co-Authors: Manuel H. Martin, Jules Galipaud, Alix Tranchot, Lionel Roué, Daniel GuayAbstract:Abstract Hydrogen Solubility in CuPd thin films was determined using a new electrochemical setup. The Cu x Pd 100− x alloy thin films were prepared by pulsed potential co-electrodeposition and have a face-centered cubic (FCC) structure over the entire composition range (20 ≤ x ≤ 100). A subsequent heat-treatment at 400 °C induced a FCC to body-centered cubic (BCC) phase transition without any significant surface segregation, as illustrated in the case of the Cu 59 Pd 41 thin film. It was demonstrated that the electrochemical setup permits, thanks to a constant renewal of the electrolyte, to minimize the anodic charge associated with the oxidation of dissolved H 2 , and thus preventing an overestimation of the Hydrogen Solubility in these compounds. From electrochemical potential-composition isotherms performed in 0.1 M NaOH, it was shown that the maximum Hydrogen Solubility, ( H / M ) max , decreases with the Cu concentration in FCC PdCu thin films (from 67 at.% for pure Pd to 3.6 at.% for Cu 88 Pd 22 ). A comparison of the electrochemical isotherms of FCC and BCC Cu 59 Pd 41 thin films confirmed that the maximum Hydrogen Solubility is much lower (by a factor of 5) and is reached at a more negative potential (higher Hydrogen pressure) for the BCC structure.
