Abstract
Observations of fractured necks in sintered copper powders show that a homogeneous bond is not obtained across the whole neck diameter. A neutral atmosphere produces a central region which fails in a ductile manner and a surrounding annulus which fails in a brittle manner. The presence of an oxide film on the particles is considered to be the cause and the present work shows that under certain conditions, the assumption made by many authors that the neck is homogeneous across its width, is incorrect.
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Heath, P.J., Evans, P.E. Sintering, fracture and oxide films. J Mater Sci 9, 1955–1960 (1974). https://doi.org/10.1007/BF00540544
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DOI: https://doi.org/10.1007/BF00540544