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Segregation of Aliovalent Solutes Adjacent Surfaces in MgO
Author(s) -
BLACK JOHN R. H.,
KINGERY W. DAVID
Publication year - 1979
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1979.tb19048.x
Subject(s) - ferrous , microprobe , chromium , scandium , electron microprobe , materials science , phase (matter) , analytical chemistry (journal) , ferric , inorganic chemistry , ion , mineralogy , chemistry , metallurgy , chromatography , organic chemistry
The segregation of ferrous iron, ferric iron, chromium, and scandium solutes adjacent {100} surfaces of MgO crystals in the single‐phase region was studied by ion microprobe mass spec‐troscopy. Excess concentration in a region near the surface was found for Fe 3+ , Cr 3+ , and Sc 3+ , but none for Fe 2+ . This segregation is the type predicted as necessary to balance the negative surface charge.