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ESCA study of the oxidation of DHP copper by L. Pedocchi; A. Billi; E. Marinelli; J. X. Wu; G. Rovida is a Engineering article available to read on EtoBox.

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## Abstract The surface composition of deoxidized high phosphorus (DHP) copper sheets was investigated by ESCA with the aim of verifying the role of phosphorus in oxide formation. While no surface segregation of phosphorus was observed on samples cleaned by ion bombardment and annealing in ultrahigh vacuum, the presence of large amounts of phosphorus was found after the formation of the oxide by exposure to 0.1 Torr oxygen at 770 K. The surface enrichment in P with the same binding energy was found after annealing a sheet of DHP copper coated with a layer of Cu~2~O deposited by sputtering. The binding energy of the P 2p peak as well as the analysis of the components of O 1s can be interpreted with the formation of a metaphosphate. Experiments performed at intermediate temperatures showed that the segregation of phosphorus is appreciable above 600 K and appears to be related to oxygen diffusion into the bulk.

Who reads ESCA study of the oxidation of DHP copper?

Author

L. Pedocchi; A. Billi; E. Marinelli; J. X. Wu; G. Rovida

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley; Research Square (ISSN 0142-2421)

Published

1992

Language

EN

Field

Engineering (Physical Sciences)