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Erosion of a Geopolymer.

DE200343567

Publication Date	2002
Personal Author	Goretta, K. C.; Chen, N.; Roubort, J. L.; Lukey, G. C.; van Deventer, J. S. J.
Page Count	18
Abstract	Solid-particle erosion studies were conducted on a representative geopolymer. The test conditions were normal impact of 390-micro meters angular Al2O3 erodent particles moving at 50, 70, or 100 m/s. Steady-state erosion rates were obtained and the material-loss mechanism was studied by scanning electron microscopy. The geopolymer responded as a classic brittle material. Elastic-plastic indentation events led to formation of brittle cleavage cracks that resulted in spallation of material. The erosion rate was proportional to erodent velocity to the 2.3 power. The erosion rate and mechanism for the geopolymer were nearly identical to what has been observed for erosion of Si single crystals.
Keywords	Polymers Erosion Rates Geopolymers Material-loss mechanisms Solid-particle erosion
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Argonne National Lab., IL. Energy Technology Div.; Department of Energy, Washington, DC.; Melbourne Univ., Victoria (Australia). Dept. of Chemical Engineering
Supplemental Notes	Prepared in cooperation with Melbourne Univ., Victoria (Australia). Dept. of Chemical Engineering. Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200324

Erosion of a Geopolymer.

Erosion of a Geopolymer.
DE200343567

Publication Date	2002
Personal Author	Goretta, K. C.; Chen, N.; Roubort, J. L.; Lukey, G. C.; van Deventer, J. S. J.
Page Count	18
Abstract	Solid-particle erosion studies were conducted on a representative geopolymer. The test conditions were normal impact of 390-micro meters angular Al2O3 erodent particles moving at 50, 70, or 100 m/s. Steady-state erosion rates were obtained and the material-loss mechanism was studied by scanning electron microscopy. The geopolymer responded as a classic brittle material. Elastic-plastic indentation events led to formation of brittle cleavage cracks that resulted in spallation of material. The erosion rate was proportional to erodent velocity to the 2.3 power. The erosion rate and mechanism for the geopolymer were nearly identical to what has been observed for erosion of Si single crystals.
Keywords	Polymers Erosion Rates Geopolymers Material-loss mechanisms Solid-particle erosion
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Argonne National Lab., IL. Energy Technology Div.; Department of Energy, Washington, DC.; Melbourne Univ., Victoria (Australia). Dept. of Chemical Engineering
Supplemental Notes	Prepared in cooperation with Melbourne Univ., Victoria (Australia). Dept. of Chemical Engineering. Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200324