Publication

Résistances DuPont 2041 sur Al2O3 [Ag] et diélectrique [DuPont 2041 resistors on Al2O3 [Ag] and dielectric]

Thomas Maeder
2000
Reports

Abstract

Le coefficient en température à chaud (HTCR) de la pâte résistive 10 kΩ Du Pont 2041 a été étudié grossièrement sur 6 diélectriques: Heraeus GPA 98–029, Du Pont 5704, Du Pont QM42, ESL 4702, ESL 4903 et ESL 4913, déposés sur des substrats standard en alumine 96% et sur d'autres diélectriques (empilement), et avec ou sans couche d'argent enterrée (étude de l'effet de pile). Hormis ESL 4702 (forte baisse de HTCR) et Du Pont 5704 (légère hausse), les diélectriques étudiés ont peu d'effet sur HTCR. De plus, HTCR dépend très peu (max. env. ±20 ppm/K) de la présence d'une couche d'argent "enterré" sous 2 couches de diélectrique; ces diélectriques semblent donc résister à l'effet de pile entre Ag et Ag:Pd 3:1.

Official source

https://infoscience.epfl.ch/entities/publication/f3204782-a62f-4a31-a382-00b54bfbd77e

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Thomas Maeder
2000
Reports

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/f3204782-a62f-4a31-a382-00b54bfbd77e

About this result

Related concepts (4)

Silver

Silver is a chemical element with the symbol Ag (, derived from the Proto-Indo-European h2erǵ 'shiny, white') and atomic number 47. A soft, white, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal. The metal is found in the Earth's crust in the pure, free elemental form ("native silver"), as an alloy with gold and other metals, and in minerals such as argentite and chlorargyrite. Most silver is produced as a byproduct of copper, gold, lead, and zinc refining.

Palladium

Palladium is a chemical element with the symbol Pd and atomic number 46. It is a rare and lustrous silvery-white metal discovered in 1803 by the English chemist William Hyde Wollaston. He named it after the asteroid Pallas, which was itself named after the epithet of the Greek goddess Athena, acquired by her when she slew Pallas. Palladium, platinum, rhodium, ruthenium, iridium and osmium form a group of elements referred to as the platinum group metals (PGMs).

Silver nitrate

Silver nitrate is an inorganic compound with chemical formula AgNO3. It is a versatile precursor to many other silver compounds, such as those used in photography. It is far less sensitive to light than the halides. It was once called lunar caustic because silver was called luna by ancient alchemists who associated silver with the moon. In solid silver nitrate, the silver ions are three-coordinated in a trigonal planar arrangement. Albertus Magnus, in the 13th century, documented the ability of nitric acid to separate gold and silver by dissolving the silver.