Add to ORKGThe influence of dissolution of a segregating element (Sb) in a metal matrix in which oxide precipitates are present on the precipitate morphology and the interface structure is studied using HRTEM. The influence on Mn3O4 precipitates in Ag is distinct: (i) the initial precipitates, sharply facetted by solely {111}, are changed into a globular shape with sometimes also short {220} and (002) facets, (ii) a partly reduction of Mn3O4 into MnO occurs for a part of the precipitates. Further Sb appeared to prevent Oswald ripening of the precipitates. The influence on MnO and MgO precipitates in Cu is more subtle: only a small but significant increase of the facet lengths of the {200} (and {220}) relative to the {111} occurs. The influence of Sb c...