Premium
Preparation of Magnesium Aluminate Spinel Containing Controlled Amounts of 17 O Isotope
Author(s) -
Kim HyounEe,
Zinkle Steven J.,
Allen William R.
Publication year - 1991
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.1151-2916.1991.tb04126.x
Subject(s) - spinel , magnesium , hydroxide , aluminium , oxide , materials science , oxide minerals , inorganic chemistry , aluminium hydroxide , nuclear chemistry , chemistry , radiochemistry , metallurgy , chemical reaction , biochemistry
Magnesium aluminate spinel (MgAl 2 O 4 ) with an 17 O enrichment ( 17 O/O Tot ) of about 23 at.% was prepared by reacting fine mixtures of aluminum hydroxide (enriched with 17 O) and magnesium oxide of normal isotopic content. The material was prepared for experiments in which the radiation damage produced in a fusion reactor is simulated by fission reactor exposures. The powder mixtures were obtained by hydrolyzing, with water containing the 17 O iostope, a mixture of aluminum isopropoxide and magnesium oxide powder. The mixture was converted into pure spinel by a series of heat treatments and grindings. Essentially fully dense bodies, which contained about 45% of the 17 O isotope initially present in the water, were successfully fabricated provided that all thermal treatments were conducted in argon or vacuum atmospheres.