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Sandblasting is an old technique for decoration of glass surfaces. In recent years, this technology has developed into an industrial process for technical structuring of brittle materials. This paper derives relations for the parameters from the basic indentation models that are important for an industrial process: erosion rate, surface roughness and strength. Quantitative estimates for these parameters and for transitions that occur in the erosion process are determined. The theory reveals the kinetic energy of the particles as a global scaling rule for the erosion process. Experimental validation shows that the quantitative relations for transitions are reasonable. The relation for the erosion rate gives the correct dependence on kinetic energy, overestimating the erosion by only a factor of four. The prediction of surface roughness is of the correct order of magnitude, whereas the strength relation is reasonable. The scaling rule is found to be very valuable. |
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