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Erosion of Magnesium Potassium Phosphate Ceramic Waste Forms

Published online by Cambridge University Press:  10 February 2011

K. C. Goretta ,
D. Singh ,
M. Tlustochowicz ,
M. M. Cuber ,
M. L. Burdt ,
S. Y. Jeong ,
T. L. Smith ,
A. S. Wagh  and
J. L. Routbort
K. C. Goretta
Affiliation:
Energy Technology Division, Argonne National Laboratory, Argonne, IL 60439–4838
D. Singh
Affiliation:
Energy Technology Division, Argonne National Laboratory, Argonne, IL 60439–4838
M. Tlustochowicz
Affiliation:
Energy Technology Division, Argonne National Laboratory, Argonne, IL 60439–4838
M. M. Cuber
Affiliation:
Energy Technology Division, Argonne National Laboratory, Argonne, IL 60439–4838
M. L. Burdt
Affiliation:
Energy Technology Division, Argonne National Laboratory, Argonne, IL 60439–4838
S. Y. Jeong
Affiliation:
Energy Technology Division, Argonne National Laboratory, Argonne, IL 60439–4838
T. L. Smith
Affiliation:
Energy Technology Division, Argonne National Laboratory, Argonne, IL 60439–4838
A. S. Wagh
Affiliation:
Energy Technology Division, Argonne National Laboratory, Argonne, IL 60439–4838
J. L. Routbort
Affiliation:
Energy Technology Division, Argonne National Laboratory, Argonne, IL 60439–4838
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Abstract

Phosphate-based chemically bonded ceramics were formed from magnesium potassium phosphate (MKP) binder and either industrial fly ash or steel slag. The resulting ceramics were subjected to solid-particle erosion by a stream of either angular Al2O3 particles or rounded SiO2 sand. Particle impact angles were 30 or 90° and the impact velocity was 50 m/s. Steady-state erosion rates, measured as mass lost from a specimen per mass of impacting particle, were dependent on impact angle and on erodent particle size and shape. Material was lost by a combination of fracture mechanisms. Evolution of H2O from the MKP phase appeared to contribute significantly to the material loss.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 556: Symposium QQ – Scientific Basis for Nuclear Waste Management XXII , 1999 , 1253
Copyright
Copyright © Materials Research Society 1999

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References

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