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Coating of Crystalline Nuclear Waste Forms to Improve Inertness
Author(s) -
STCMTON D. P.,
ANGEIINI P.,
CAPUTO A. J.,
LACKEY W. J.
Publication year - 1982
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.1151-2916.1982.tb10491.x
Subject(s) - pyrolytic carbon , borosilicate glass , silicon carbide , coating , radioactive waste , inductively coupled plasma , materials science , carbon fibers , zeolite , chemical engineering , caesium , carbide , aqueous solution , chemistry , nuclear chemistry , metallurgy , pyrolysis , inorganic chemistry , composite material , composite number , catalysis , plasma , organic chemistry , physics , quantum mechanics , engineering
Microspheres of a crystalline waste form prepared by sol‐gel processing were successfully coated with layers of pyrolytic carbon and silicon carbide to isolate the radioactive wastes from the biosphere. A separate process for cesium immobilization was developed, which loads 5 wt% Cs onto zeolite particles for subsequent coating. Pyrolytic carbon‐coated particles showed leach rates =2 to 4 orders of magnitude less than the candidate reference borosilicate glass waste form. Aqueous leach‐test results of coated waste forms were below detection limits of such sensitive analytical techniques as atomic absorption and inductively coupled plasma atomic emission.