A Reduction Process of Palladium Oxide Thin Films and Hydrogen Gas Sensing Properties of Reduced Palladium Thin Films

Lee, Young Tack; Kim, Yeon Ju; Lee, Jun Min; Joe, Jin Hyoun; Lee, Wooyoung

doi:10.3365/kjmm.2010.48.04.347

Cited by 2 publications

(1 citation statement)

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“…However, the material properties and contact conditions vary with temperature. To predict die wear during warm extrusion where die temperature, being the dominant factor affecting wear, may rise to over 400°C, unevenly distributed, temperature-dependent effects must be considered [2].…”

Section: Wear Modelingmentioning

confidence: 99%

Wear Analysis of Warm Extrusion Dies Using DEFORM

Zhang

2014

AMM

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Based on a modified form of Archard’s wear theory, significant data were obtained using the finite element analysis code DEFORM during the process of warm extrusion, including instantaneous interface temperature, sliding velocity, and interface pressure distribution of every node. From the acquired data, the wear of the punch, the temperature–wear coefficient curve, temperature–wear depth curve, and temperature–hardness curve were acquired. The results show that the maximum wear occurred in the front working tape of the punch. The results are in agreement with actual conditions, and therefore, lay a foundation for forecasting die life and optimizing die cavity profiles using this method.

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Section: Wear Modelingmentioning

confidence: 99%

Wear Analysis of Warm Extrusion Dies Using DEFORM

Zhang

2014

AMM

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Fabrication and Characterization of Hydrogen Getter Based on Palladium Oxide Doped Nanoporous SiO2/Si Substrate

Eom¹,

Lim²,

Choi³

et al. 2014

Korean. J. Mater. Res.

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The existing metal getters are invariably covered with thin oxide layers in air and the native oxide layer must be dissolved into the getter materials for activation. However, high temperature is needed for the activation, which leads to unavoidable deleterious effects on the devices. Therefore, to improve the device efficiency and gas-adsorption properties of the device, it is essential to synthesize the getter with a method that does not require a thermal activation temperature. In this study, getter material was synthesized using palladium oxide (PdOx) which can adsorb H 2 gas. To enhance the efficiency of the hydrogen and moisture absorption, a porous layer with a large specific area was fabricated by an etching process and used as supporting substrates. It was confirmed that the moisture-absorption performance of the SiO 2 /Si was characterized by water vapor volume with relative humidity. The gas-adsorption properties occurred in the absence of the activation process.

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A Reduction Process of Palladium Oxide Thin Films and Hydrogen Gas Sensing Properties of Reduced Palladium Thin Films

Cited by 2 publications

References 0 publications

Wear Analysis of Warm Extrusion Dies Using DEFORM

Wear Analysis of Warm Extrusion Dies Using DEFORM

Fabrication and Characterization of Hydrogen Getter Based on Palladium Oxide Doped Nanoporous SiO2/Si Substrate

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