Erosion of a Geopolymer.

Goretta, K. C. ; Chen, N. ; Roubort, J. L. ; Lukey, G. C. ; van Deventer, J. S. J.

Technical Information Center Oak Ridge Tennessee

关键词: Polymers;    Erosion;    Rates;    Geopolymers;    Material-loss mechanisms;   

RP-ID  :  DE200343567

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

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.