Beitrag zur Anreicherung verkrätzungsverhindernder Elemente an Oberflächen von Metallschmelzen

Erdmann‐Jesnitzer, Friedrich; Hadamovsky, Hansfriedrich; Görner, Rosemarie

doi:10.1515/ijmr-1958-490303

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1985

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“…The as-dried coprecipitated powders were found to be x-ray amorphous, but powders calcined as low as 350~C produced XRD patterns characteristic of tetragonal PZT, with only slight lattice distortion. More recently, Tuttle (8) coprecipitated powders of PSZT + Nb205 using a process similar to that employed by Wittmer and Buchanan (7). PbO, SnO2, and Nb205 were added to the…”

Section: Introductionmentioning

confidence: 99%

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Effect of Trace Elements on Etching of Aluminum Electrolytic Capacitor Foil

Arai

Suzuki

Atsumi

1985

J. Electrochem. Soc.

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An investigation was made as to the effect of trace impurities, particularly bismuth and boron, on etching morphology and capacitance of aluminum electrolytic capacitor foil. It was found that as little as 2 wt‐ppm bismuth in foil strongly accelerated surface etching, inhibited tunneling, and consequently lowered capacitance. 3 wt‐ppm boron also enhanced surface etching, but lowered capacitance less than bismuth. The reason for these results was considered

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Section: Introductionmentioning

confidence: 99%

“…Since impurities contained in aluminum markedly influence etching, it is essential to control them in order to manufacture excellent aluminum electrolytic capacitor foil. A number of studies (3)(4)(5)(6)(7)(8)(9)(10)(11)(12) on the effect of impurities or alloying elements contained in aluminum have been reported.…”

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confidence: 99%