Characterization of electroless plated palladium–silver alloy membranes

Pd and Pd/Ag layers were prepared by a technique of electroless plating on stainless steel supports. To form Pd/Ag layers, Pd layer was plated on an activated stainless steel (SS) sheet followed by Ag plating. The Pd/Ag -SS sheet composite was annealed at 873 K-973 K for 10 h -12 h in helium. Before annealing, the thickness of Pd layer and Ag layer on Pd/Ag -SS sheet composite was 7.6 μm and 1.9 μm, respectively. The formation of Pd/Ag alloy was observed on the SS sheet after annealing at 873 K for 12 h in helium. The ratios of Ag /( Pd + Ag ) were 0.28 on the surface by XRF and 0.29 in the bulk by XPS. This result showed the formation of homogeneous Pd/Ag alloy on the SS sheet at that annealing condition. Helium permeances were measured at a pressure difference of 1 atm and room temperature. The permeances of porous stainless steel (PSS) tubes without and with 78 μm Pd layer were 100 m3/m2h and 0.35 m3/m2h, respectively. This result showed the obtained membrane was an almost dense membrane.

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Synergistic catalytic activity of palladium–silver alloy nanoparticle for anodic oxidation of ethanol in alkali

International Journal of Hydrogen Energy ◽

10.1016/j.ijhydene.2020.11.113 ◽

2020 ◽

Author(s):

Sreya Roy Chowdhury ◽

Kamal Kanti Bera ◽

Apurba Ray ◽

Parthasarathi Bera ◽

T. Maiyalagan ◽

...

Keyword(s):

Catalytic Activity ◽

Anodic Oxidation ◽

Silver Alloy ◽

Oxidation Of Ethanol ◽

Palladium Silver

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Synergistic Enhancement Effect of Palladium-Silver Alloy Nanoparticle Catalysts Towards High-Sensitive Hydrogen Detection

2019 20th International Conference on Solid-State Sensors, Actuators and Microsystems & Eurosensors XXXIII (TRANSDUCERS & EUROSENSORS XXXIII) ◽

10.1109/transducers.2019.8808575 ◽

2019 ◽

Author(s):

Dongsheng Xu ◽

Dan Zheng ◽

Pengcheng Xu ◽

Ying Chen ◽

Xinxin Li

Keyword(s):

Enhancement Effect ◽

Silver Alloy ◽

Hydrogen Detection ◽

Nanoparticle Catalysts ◽

Synergistic Enhancement ◽

Palladium Silver

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Synthesis and hydrogen permeation properties of ultrathin palladium-silver alloy membranes

Journal of Membrane Science ◽

10.1016/0376-7388(95)00040-j ◽

1995 ◽

Vol 104 (3) ◽

pp. 251-262 ◽

Cited By ~ 121

Author(s):

V. Jayaraman ◽

Y.S. Lin

Keyword(s):

Hydrogen Permeation ◽

Silver Alloy ◽

Permeation Properties ◽

Palladium Silver

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Fracture of Porcelain-veneered Structures in Fatigue

Journal of Dental Research ◽

10.1177/154405910708600207 ◽

2007 ◽

Vol 86 (2) ◽

pp. 142-146 ◽

Cited By ~ 79

Author(s):

B. Kim ◽

Y. Zhang ◽

M. Pines ◽

V.P. Thompson

Keyword(s):

Tungsten Carbide ◽

Cyclic Load ◽

Surface Damage ◽

Lower Surface ◽

Occlusal Surface ◽

High Modulus ◽

Radial Fracture ◽

Silver Alloy ◽

All Ceramic ◽

Palladium Silver

Porcelain-veneered crowns are widely used in modern dentistry, and their fracture remains problematic, especially in all-ceramic systems. We hypothesized that substructure properties have a significant effect on the longevity of porcelain-veneered crowns. Flat porcelain/metal or porcelain/ceramic structures were cemented to dentin-like composite, and a mouth-motion cyclic load of 200 N was delivered by means of a tungsten carbide spherical indenter ( r = 3.18 mm), emulating occlusal loading on crowns supported by dentin. Findings indicated that porcelain on a low-hardness gold-infiltrated alloy was vulnerable to both occlusal surface contact damage and porcelain lower surface radial fracture, while porcelain on a higher-hardness palladium-silver alloy fractured chiefly from occlusal surface damage. The advantage of a high-modulus metal substructure was less pronounced. Fracture in the porcelain/zirconia system was limited to surface damage in the veneer layer, similar to that in the porcelain/palladium-silver system. Bulk fracture, observed in veneered alumina layers, was not found for zirconia.

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